CMakeFiles/updaterevision.dir/updaterevision.o: In function `main':
updaterevision.c:(.text+0x140): warning: the use of `tempnam' is dangerous, better use `mkstemp'
abort: repository . not found!
Failed to get current revision: Success
No revision found.
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:50:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:57:5: error: template with C linkage
     template <typename T> struct RemoveRef { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:58:5: error: template with C linkage
     template <typename T> struct RemoveRef<T&> { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:59:5: error: template with C linkage
     template <typename T> struct RemoveConstRef { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:60:5: error: template with C linkage
     template <typename T> struct RemoveConstRef<const T&> { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:69:5: error: template with C linkage
     template <typename...> struct List {};
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:70:5: error: template with C linkage
     template <typename Head, typename... Tail> struct List<Head, Tail...> { typedef Head Car; typedef List<Tail...> Cdr; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:71:5: error: template with C linkage
     template <typename, typename> struct List_Append;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:72:5: error: template with C linkage
     template <typename... L1, typename...L2> struct List_Append<List<L1...>, List<L2...>> { typedef List<L1..., L2...> Value; };
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:50:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:73:5: error: template with C linkage
     template <typename L, int N> struct List_Left {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:76:5: error: template with C linkage
     template <typename L> struct List_Left<L, 0> { typedef List<> Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:78:5: error: template with C linkage
     template <typename L, int N> struct List_Select { typedef typename List_Select<typename L::Cdr, N - 1>::Value Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:79:5: error: template with C linkage
     template <typename L> struct List_Select<L,0> { typedef typename L::Car Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:87:5: error: template with C linkage
     template <typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:92:5: error: template with C linkage
     template<typename T, typename U>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:97:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:117:5: error: template with C linkage
     template <int...> struct IndexesList {};
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:118:5: error: template with C linkage
     template <typename IndexList, int Right> struct IndexesAppend;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:119:5: error: template with C linkage
     template <int... Left, int Right> struct IndexesAppend<IndexesList<Left...>, Right>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:121:5: error: template with C linkage
     template <int N> struct Indexes
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:123:5: error: template specialization with C linkage
     template <> struct Indexes<0> { typedef IndexesList<> Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:124:5: error: template with C linkage
     template<typename Func> struct FunctionPointer { enum {ArgumentCount = -1, IsPointerToMemberFunction = false}; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:126:5: error: template with C linkage
     template <typename, typename, typename, typename> struct FunctorCall;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:127:5: error: template with C linkage
     template <int... II, typename... SignalArgs, typename R, typename Function>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:133:5: error: template with C linkage
     template <int... II, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:139:5: error: template with C linkage
     template <int... II, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160:5: error: template with C linkage
     template<class Obj, typename Ret, typename... Args> struct FunctionPointer<Ret (Obj::*) (Args...)>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:172:5: error: template with C linkage
     template<class Obj, typename Ret, typename... Args> struct FunctionPointer<Ret (Obj::*) (Args...) const>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185:5: error: template with C linkage
     template<typename Ret, typename... Args> struct FunctionPointer<Ret (*) (Args...)>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:236:5: error: template with C linkage
     template<typename Function, int N> struct Functor
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:250:5: error: template with C linkage
     template<typename E, typename Enable = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:255:5: error: template with C linkage
     template<typename E>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:267:5: error: template with C linkage
     template<typename From, typename To, typename Enable = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:272:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:295:5: error: template with C linkage
     template<typename A1, typename A2> struct AreArgumentsCompatible {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:305:5: error: template with C linkage
     template<typename A1, typename A2> struct AreArgumentsCompatible<A1, A2&> { enum { value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:306:5: error: template with C linkage
     template<typename A> struct AreArgumentsCompatible<A&, A&> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:308:5: error: template with C linkage
     template<typename A> struct AreArgumentsCompatible<void, A> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:309:5: error: template with C linkage
     template<typename A> struct AreArgumentsCompatible<A, void> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:310:5: error: template specialization with C linkage
     template<> struct AreArgumentsCompatible<void, void> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:312:5: error: template with C linkage
     template <typename List1, typename List2> struct CheckCompatibleArguments { enum { value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:313:5: error: template specialization with C linkage
     template <> struct CheckCompatibleArguments<List<>, List<>> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:314:5: error: template with C linkage
     template <typename List1> struct CheckCompatibleArguments<List1, List<>> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:315:5: error: template with C linkage
     template <typename Arg1, typename Arg2, typename... Tail1, typename... Tail2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:327:5: error: template with C linkage
     template <typename Functor, typename ArgList> struct ComputeFunctorArgumentCount;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:329:5: error: template with C linkage
     template <typename Functor, typename ArgList, bool Done> struct ComputeFunctorArgumentCountHelper
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:331:5: error: template with C linkage
     template <typename Functor, typename First, typename... ArgList>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:336:5: error: template with C linkage
     template <typename Functor, typename... ArgList> struct ComputeFunctorArgumentCount<Functor, List<ArgList...>>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:348:5: error: template with C linkage
     template <typename Functor, typename ArgList> struct FunctorReturnType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:349:5: error: template with C linkage
     template <typename Functor, typename ... ArgList> struct FunctorReturnType<Functor, List<ArgList...>> {
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:55:38: error: invalid use of incomplete type ‘class QObject’
 class Q_CORE_EXPORT QThread : public QObject
                                      ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:288:7: note: forward declaration of ‘class QObject’
 class QObject;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:98:16: error: ‘QEvent’ has not been declared
     bool event(QEvent *event) Q_DECL_OVERRIDE;
                ^~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:316:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:324:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:334:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:98:10: error: ‘bool QThread::event(int*)’ marked ‘override’, but does not override
     bool event(QEvent *event) Q_DECL_OVERRIDE;
          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:48,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:48,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/cmdargshelp.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In member function ‘QThreadPrivate* QThread::d_func()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:128:5: error: ‘d_ptr’ was not declared in this scope
     Q_DECLARE_PRIVATE(QThread)
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In member function ‘const QThreadPrivate* QThread::d_func() const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:128:5: error: ‘d_ptr’ was not declared in this scope
     Q_DECLARE_PRIVATE(QThread)
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:50:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:57:5: error: template with C linkage
     template <typename T> struct RemoveRef { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:58:5: error: template with C linkage
     template <typename T> struct RemoveRef<T&> { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:59:5: error: template with C linkage
     template <typename T> struct RemoveConstRef { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:60:5: error: template with C linkage
     template <typename T> struct RemoveConstRef<const T&> { typedef T Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:69:5: error: template with C linkage
     template <typename...> struct List {};
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:70:5: error: template with C linkage
     template <typename Head, typename... Tail> struct List<Head, Tail...> { typedef Head Car; typedef List<Tail...> Cdr; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:71:5: error: template with C linkage
     template <typename, typename> struct List_Append;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:72:5: error: template with C linkage
     template <typename... L1, typename...L2> struct List_Append<List<L1...>, List<L2...>> { typedef List<L1..., L2...> Value; };
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:50:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:73:5: error: template with C linkage
     template <typename L, int N> struct List_Left {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:76:5: error: template with C linkage
     template <typename L> struct List_Left<L, 0> { typedef List<> Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:78:5: error: template with C linkage
     template <typename L, int N> struct List_Select { typedef typename List_Select<typename L::Cdr, N - 1>::Value Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:542:5: error: template with C linkage
     template <typename Object> struct HasQ_OBJECT_Macro {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:79:5: error: template with C linkage
     template <typename L> struct List_Select<L,0> { typedef typename L::Car Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:87:5: error: template with C linkage
     template <typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:92:5: error: template with C linkage
     template<typename T, typename U>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:60:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:62:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:97:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:65:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:117:5: error: template with C linkage
     template <int...> struct IndexesList {};
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:118:5: error: template with C linkage
     template <typename IndexList, int Right> struct IndexesAppend;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:67:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:119:5: error: template with C linkage
     template <int... Left, int Right> struct IndexesAppend<IndexesList<Left...>, Right>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:70:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:72:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:121:5: error: template with C linkage
     template <int N> struct Indexes
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:74:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:81:1: error: template with C linkage
 template <typename InputIterator, typename OutputIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:123:5: error: template specialization with C linkage
     template <> struct Indexes<0> { typedef IndexesList<> Value; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:124:5: error: template with C linkage
     template<typename Func> struct FunctionPointer { enum {ArgumentCount = -1, IsPointerToMemberFunction = false}; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:89:1: error: template with C linkage
 template <typename BiIterator1, typename BiIterator2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:126:5: error: template with C linkage
     template <typename, typename, typename, typename> struct FunctorCall;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:97:1: error: template with C linkage
 template <typename InputIterator1, typename InputIterator2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:127:5: error: template with C linkage
     template <int... II, typename... SignalArgs, typename R, typename Function>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:106:1: error: template with C linkage
 template <typename ForwardIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:113:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:133:5: error: template with C linkage
     template <int... II, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:119:1: error: template with C linkage
 template <typename InputIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:127:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:133:1: error: template with C linkage
 template <typename InputIterator, typename T, typename Size>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:139:5: error: template with C linkage
     template <int... II, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:141:1: error: template with C linkage
 template <typename Container, typename T, typename Size>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:152:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:160:5: error: template with C linkage
     template<class Obj, typename Ret, typename... Args> struct FunctionPointer<Ret (Obj::*) (Args...)>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:162:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:173:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:180:1: error: template with C linkage
 template <typename RandomAccessIterator, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:187:1: error: template with C linkage
 template<typename Container>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:172:5: error: template with C linkage
     template<class Obj, typename Ret, typename... Args> struct FunctionPointer<Ret (Obj::*) (Args...) const>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:198:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:205:1: error: template with C linkage
 template <typename RandomAccessIterator, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:212:1: error: template with C linkage
 template<typename Container>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:185:5: error: template with C linkage
     template<typename Ret, typename... Args> struct FunctionPointer<Ret (*) (Args...)>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:223:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:246:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:236:5: error: template with C linkage
     template<typename Function, int N> struct Functor
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:252:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:258:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:250:5: error: template with C linkage
     template<typename E, typename Enable = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:255:5: error: template with C linkage
     template<typename E>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:279:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:267:5: error: template with C linkage
     template<typename From, typename To, typename Enable = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:285:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:272:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:291:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:303:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:309:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:316:1: error: template with C linkage
 template <typename ForwardIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:295:5: error: template with C linkage
     template<typename A1, typename A2> struct AreArgumentsCompatible {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:325:1: error: template with C linkage
 template <typename Container>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:339:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:305:5: error: template with C linkage
     template<typename A1, typename A2> struct AreArgumentsCompatible<A1, A2&> { enum { value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:306:5: error: template with C linkage
     template<typename A> struct AreArgumentsCompatible<A&, A&> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:308:5: error: template with C linkage
     template<typename A> struct AreArgumentsCompatible<void, A> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:309:5: error: template with C linkage
     template<typename A> struct AreArgumentsCompatible<A, void> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:310:5: error: template specialization with C linkage
     template<> struct AreArgumentsCompatible<void, void> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:312:5: error: template with C linkage
     template <typename List1, typename List2> struct CheckCompatibleArguments { enum { value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:392:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:313:5: error: template specialization with C linkage
     template <> struct CheckCompatibleArguments<List<>, List<>> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:398:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:314:5: error: template with C linkage
     template <typename List1> struct CheckCompatibleArguments<List1, List<>> { enum { value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:406:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:315:5: error: template with C linkage
     template <typename Arg1, typename Arg2, typename... Tail1, typename... Tail2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:414:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:327:5: error: template with C linkage
     template <typename Functor, typename ArgList> struct ComputeFunctorArgumentCount;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:329:5: error: template with C linkage
     template <typename Functor, typename ArgList, bool Done> struct ComputeFunctorArgumentCountHelper
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:331:5: error: template with C linkage
     template <typename Functor, typename First, typename... ArgList>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:336:5: error: template with C linkage
     template <typename Functor, typename... ArgList> struct ComputeFunctorArgumentCount<Functor, List<ArgList...>>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:449:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:462:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:348:5: error: template with C linkage
     template <typename Functor, typename ArgList> struct FunctorReturnType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:468:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:349:5: error: template with C linkage
     template <typename Functor, typename ... ArgList> struct FunctorReturnType<Functor, List<ArgList...>> {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:489:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:509:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:316:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:324:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:578:39: error: conflicting declaration of C function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint8)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint8 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:574:39: note: previous declaration ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint32)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint32 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:334:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:582:39: error: conflicting declaration of C function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint16)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint16 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:578:39: note: previous declaration ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint8)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint8 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:582:39: error: conflicting declaration of C function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint16)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint16 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:574:39: note: previous declaration ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint32)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint32 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: note: previous declaration ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(quint64)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: note: previous declaration ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: note: previous declaration ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(long unsigned int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: note: previous declaration ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: note: previous declaration ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: note: previous declaration ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(quint64)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(long unsigned int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(quint64)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(long unsigned int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:45:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:48:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:100:1: error: template with C linkage
 template <typename T1, typename T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:106:1: error: template with C linkage
 template<class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:109:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:114:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:119:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:126:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:133:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:140:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:147:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
In file included from /usr/include/c++/7/numeric:62:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_numeric.h:80:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:118:3: error: template with C linkage
   template<typename _InputIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:144:3: error: template with C linkage
   template<typename _InputIterator, typename _Tp, typename _BinaryOperation>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:172:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:203:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:235:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:275:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:315:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:357:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(uchar, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: error: conflicting declaration of C function ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(signed char, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: error: conflicting declaration of C function ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: error: conflicting declaration of C function ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(ushort, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: error: conflicting declaration of C function ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: error: conflicting declaration of C function ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: error: conflicting declaration of C function ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(short int, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(uint, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(int, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(ulong, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(long int, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:542:5: error: template with C linkage
     template <typename Object> struct HasQ_OBJECT_Macro {
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(quint64, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:60:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:62:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:65:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:67:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:70:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:72:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:74:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(qint64, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:81:1: error: template with C linkage
 template <typename InputIterator, typename OutputIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:89:1: error: template with C linkage
 template <typename BiIterator1, typename BiIterator2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:97:1: error: template with C linkage
 template <typename InputIterator1, typename InputIterator2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:106:1: error: template with C linkage
 template <typename ForwardIterator, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:113:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:119:1: error: template with C linkage
 template <typename InputIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:127:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:133:1: error: template with C linkage
 template <typename InputIterator, typename T, typename Size>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:141:1: error: template with C linkage
 template <typename Container, typename T, typename Size>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:152:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:162:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:173:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:180:1: error: template with C linkage
 template <typename RandomAccessIterator, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:187:1: error: template with C linkage
 template<typename Container>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:198:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:205:1: error: template with C linkage
 template <typename RandomAccessIterator, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:212:1: error: template with C linkage
 template<typename Container>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:223:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:246:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:252:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:258:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:279:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:285:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:291:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:303:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(QChar, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:309:1: error: template with C linkage
 template <typename Container, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:316:1: error: template with C linkage
 template <typename ForwardIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:325:1: error: template with C linkage
 template <typename Container>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:339:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:392:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:398:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:406:1: error: template with C linkage
 template <typename RandomAccessIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:414:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:449:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:462:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:468:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:489:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:509:1: error: template with C linkage
 template <typename RandomAccessIterator, typename T, typename LessThan>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:578:39: error: conflicting declaration of C function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint8)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint8 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:574:39: note: previous declaration ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint32)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint32 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:582:39: error: conflicting declaration of C function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint16)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint16 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:578:39: note: previous declaration ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint8)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint8 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:582:39: error: conflicting declaration of C function ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint16)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint16 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:574:39: note: previous declaration ‘constexpr uint QAlgorithmsPrivate::qt_builtin_popcount(quint32)’
 Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_popcount(quint32 v) Q_DECL_NOTHROW
                                       ^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: previous declaration ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: note: previous declaration ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(quint64)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: note: previous declaration ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: note: previous declaration ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘constexpr uint qPopulationCount(long unsigned int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:717:57: note: previous declaration ‘constexpr uint qPopulationCount(quint64)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint64 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:706:57: note: previous declaration ‘constexpr uint qPopulationCount(quint16)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint16 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:696:57: note: previous declaration ‘constexpr uint qPopulationCount(quint8)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint8 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:732:57: error: conflicting declaration of C function ‘constexpr uint qPopulationCount(long unsigned int)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(long unsigned int v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:683:57: note: previous declaration ‘constexpr uint qPopulationCount(quint32)’
 Q_DECL_CONST_FUNCTION QT_POPCOUNT_CONSTEXPR inline uint qPopulationCount(quint32 v) Q_DECL_NOTHROW
                                                         ^~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: note: previous declaration ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: previous declaration ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(quint64)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountTrailingZeroBits(long unsigned int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:791:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:775:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:760:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:802:38: error: conflicting declaration of C function ‘uint qCountTrailingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:742:38: note: previous declaration ‘uint qCountTrailingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(quint8)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:103:41: error: conflicting declaration of C function ‘uint qt_hash(const QStringRef&)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qt_hash(const QStringRef &key) Q_DECL_NOTHROW;
                                         ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:102:41: note: previous declaration ‘uint qt_hash(const QString&)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qt_hash(const QString &key) Q_DECL_NOTHROW;
                                         ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:105:1: error: template with C linkage
 template <class T> inline uint qHash(const T *key, uint seed = 0) Q_DECL_NOTHROW
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(quint16)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:109:1: error: template with C linkage
 template<typename T> inline uint qHash(const T &t, uint seed)
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(quint64)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:117:5: error: template with C linkage
     template <typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h: In function ‘uint qCountLeadingZeroBits(long unsigned int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:847:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint64)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:834:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint16)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:130:5: error: template with C linkage
     template <typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:822:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint8)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:862:38: error: conflicting declaration of C function ‘uint qCountLeadingZeroBits(long unsigned int)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qalgorithms.h:807:38: note: previous declaration ‘uint qCountLeadingZeroBits(quint32)’
 Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
                                      ^~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:137:1: error: template with C linkage
 template <typename InputIterator>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:45:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:48:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:144:1: error: template with C linkage
 template <typename InputIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:151:1: error: template with C linkage
 template <typename T1, typename T2> inline uint qHash(const QPair<T1, T2> &key, uint seed = 0)
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:159:1: error: template with C linkage
 template <typename T1, typename T2> inline uint qHash(const std::pair<T1, T2> &key, uint seed = 0)
 ^~~~~~~~
In file included from /usr/include/c++/7/iosfwd:39:0,
                 from /usr/include/c++/7/ios:38,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stringfwd.h:52:3: error: template with C linkage
   template<class _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:55:3: error: template specialization with C linkage
   template<> struct char_traits<char>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:58:3: error: template specialization with C linkage
   template<> struct char_traits<wchar_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:63:3: error: template specialization with C linkage
   template<> struct char_traits<char16_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:64:3: error: template specialization with C linkage
   template<> struct char_traits<char32_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:69:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:100:1: error: template with C linkage
 template <typename T1, typename T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:106:1: error: template with C linkage
 template<class T1, class T2>
 ^~~~~~~~
In file included from /usr/include/string.h:431:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/application.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/application.cpp:23:
/tmp/doomseeker-1.1_src/src/core/strings.h:37:19: error: variable ‘MAIN_EXPORT Strings’ has initializer but incomplete type
 class MAIN_EXPORT Strings
                   ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:109:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:39:2: error: expected primary-expression before ‘public’
  public:
  ^~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:39:2: error: expected ‘}’ before ‘public’
/tmp/doomseeker-1.1_src/src/core/strings.h:39:2: error: expected ‘,’ or ‘;’ before ‘public’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:114:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:119:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
In file included from /usr/include/string.h:431:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/application.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/application.cpp:23:
/tmp/doomseeker-1.1_src/src/core/strings.h: In function ‘QString& trim(QString&, const QString&)’:
/tmp/doomseeker-1.1_src/src/core/strings.h:157:78: error: ‘triml’ was not declared in this scope
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                              ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:126:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:133:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:140:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qpair.h:147:1: error: template with C linkage
 template <class T1, class T2>
 ^~~~~~~~
In file included from /usr/include/c++/7/numeric:62:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_numeric.h:80:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:118:3: error: template with C linkage
   template<typename _InputIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:144:3: error: template with C linkage
   template<typename _InputIterator, typename _Tp, typename _BinaryOperation>
   ^~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:157:78: note: suggested alternative: ‘trim’
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                              ^~~~~
                                                                              trim
/usr/include/c++/7/bits/stl_numeric.h:172:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2, typename _Tp>
   ^~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:157:72: error: ‘trimr’ was not declared in this scope
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                        ^~~~~
/usr/include/c++/7/bits/stl_numeric.h:203:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:235:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:275:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator,
   ^~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:157:72: note: suggested alternative: ‘trim’
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                        ^~~~~
                                                                        trim
/usr/include/c++/7/bits/stl_numeric.h:315:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator>
   ^~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h: At global scope:
/tmp/doomseeker-1.1_src/src/core/strings.h:174:2: error: expected unqualified-id before ‘protected’
  protected:
  ^~~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:184:21: error: uninitialized const ‘RANDOM_CHAR_POOL’ [-fpermissive]
   static const char RANDOM_CHAR_POOL[RANDOM_CHAR_POOL_SIZE];
                     ^~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_numeric.h:357:3: error: template with C linkage
   template<typename _InputIterator, typename _OutputIterator,
   ^~~~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:187:43: error: ‘DataUnit’ has not been declared
   static float scaleDataUnit(float bytes, DataUnit& outUnit);
                                           ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(uchar, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: error: conflicting declaration of C function ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/features.h:419:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/c++config.h:533,
                 from /usr/include/c++/7/type_traits:38,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:45,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QtGlobal:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:4,
                 from /tmp/doomseeker-1.1_src/src/core/application.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/application.cpp:23:
/usr/include/string.h:498:1: error: expected declaration before ‘}’ token
 __END_DECLS
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(signed char, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: error: conflicting declaration of C function ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: error: conflicting declaration of C function ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(ushort, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: error: conflicting declaration of C function ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/c++/7/iosfwd:40:0,
                 from /usr/include/c++/7/ios:38,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/postypes.h:111:3: error: template with C linkage
   template<typename _StateT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: error: conflicting declaration of C function ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: error: conflicting declaration of C function ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(short int, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: error: conflicting declaration of C function ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(uint, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/bits/postypes.h:214:3: error: template with C linkage
   template<typename _StateT>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/bits/postypes.h:219:3: error: template with C linkage
   template<typename _StateT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: error: conflicting declaration of C function ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/c++/7/ios:38:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/iosfwd:76:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(int, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:79:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:82:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:85:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:88:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:94:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: error: conflicting declaration of C function ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:98:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:102:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
/usr/include/c++/7/iosfwd:106:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(ulong, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:112:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:115:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:118:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/c++/7/iosfwd:121:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/iosfwd:124:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/c++/7/iosfwd:127:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: error: conflicting declaration of C function ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(long int, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: error: conflicting declaration of C function ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(quint64, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: error: conflicting declaration of C function ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(qint64, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/char_traits.h:61:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: error: conflicting declaration of C function ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/c++/7/bits/char_traits.h:86:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: error: conflicting declaration of C function ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/bits/char_traits.h:148:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/c++/7/bits/char_traits.h:161:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/bits/char_traits.h:172:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/c++/7/bits/char_traits.h:183:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: error: conflicting declaration of C function ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/bits/char_traits.h:192:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/c++/7/bits/char_traits.h:202:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/c++/7/bits/char_traits.h:268:3: error: template with C linkage
   template<class _CharT>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/c++/7/bits/char_traits.h:274:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: error: conflicting declaration of C function ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: In function ‘constexpr uint qHash(QChar, uint)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: error: conflicting declaration of C function ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/c++/7/bits/char_traits.h:387:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/string.h:431:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/apprunner.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/apprunner.cpp:23:
/tmp/doomseeker-1.1_src/src/core/strings.h:37:19: error: variable ‘MAIN_EXPORT Strings’ has initializer but incomplete type
 class MAIN_EXPORT Strings
                   ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:39:2: error: expected primary-expression before ‘public’
  public:
  ^~~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:39:2: error: expected ‘}’ before ‘public’
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:39:2: error: expected ‘,’ or ‘;’ before ‘public’
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: error: conflicting declaration of C function ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/string.h:431:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/apprunner.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/apprunner.cpp:23:
/tmp/doomseeker-1.1_src/src/core/strings.h: In function ‘QString& trim(QString&, const QString&)’:
/tmp/doomseeker-1.1_src/src/core/strings.h:157:78: error: ‘triml’ was not declared in this scope
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                              ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: error: conflicting declaration of C function ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/char_traits.h:507:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: error: conflicting declaration of C function ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:157:78: note: suggested alternative: ‘trim’
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                              ^~~~~
                                                                              trim
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: previous declaration ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:157:72: error: ‘trimr’ was not declared in this scope
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                        ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: error: conflicting declaration of C function ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: note: previous declaration ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: previous declaration ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:157:72: note: suggested alternative: ‘trim’
   static QString& trim(QString& str, const QString& charList) { return trimr(triml(str, charList), charList); }
                                                                        ^~~~~
                                                                        trim
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/c++/7/bits/char_traits.h:604:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h: At global scope:
/tmp/doomseeker-1.1_src/src/core/strings.h:174:2: error: expected unqualified-id before ‘protected’
  protected:
  ^~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:184:21: error: uninitialized const ‘RANDOM_CHAR_POOL’ [-fpermissive]
   static const char RANDOM_CHAR_POOL[RANDOM_CHAR_POOL_SIZE];
                     ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/tmp/doomseeker-1.1_src/src/core/strings.h:187:43: error: ‘DataUnit’ has not been declared
   static float scaleDataUnit(float bytes, DataUnit& outUnit);
                                           ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: error: conflicting declaration of C function ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:103:41: error: conflicting declaration of C function ‘uint qt_hash(const QStringRef&)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qt_hash(const QStringRef &key) Q_DECL_NOTHROW;
                                         ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:102:41: note: previous declaration ‘uint qt_hash(const QString&)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qt_hash(const QString &key) Q_DECL_NOTHROW;
                                         ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:105:1: error: template with C linkage
 template <class T> inline uint qHash(const T *key, uint seed = 0) Q_DECL_NOTHROW
 ^~~~~~~~
In file included from /usr/include/features.h:419:0,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/os_defines.h:39,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/c++config.h:533,
                 from /usr/include/c++/7/type_traits:38,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:45,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QtGlobal:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:4,
                 from /tmp/doomseeker-1.1_src/src/core/apprunner.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/apprunner.cpp:23:
/usr/include/string.h:498:1: error: expected declaration before ‘}’ token
 __END_DECLS
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:109:1: error: template with C linkage
 template<typename T> inline uint qHash(const T &t, uint seed)
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:117:5: error: template with C linkage
     template <typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:130:5: error: template with C linkage
     template <typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:137:1: error: template with C linkage
 template <typename InputIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:144:1: error: template with C linkage
 template <typename InputIterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:151:1: error: template with C linkage
 template <typename T1, typename T2> inline uint qHash(const QPair<T1, T2> &key, uint seed = 0)
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:159:1: error: template with C linkage
 template <typename T1, typename T2> inline uint qHash(const std::pair<T1, T2> &key, uint seed = 0)
 ^~~~~~~~
In file included from /usr/include/c++/7/iosfwd:39:0,
                 from /usr/include/c++/7/ios:38,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stringfwd.h:52:3: error: template with C linkage
   template<class _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:55:3: error: template specialization with C linkage
   template<> struct char_traits<char>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:58:3: error: template specialization with C linkage
   template<> struct char_traits<wchar_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:63:3: error: template specialization with C linkage
   template<> struct char_traits<char16_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:64:3: error: template specialization with C linkage
   template<> struct char_traits<char32_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/stringfwd.h:69:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:41:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/localefwd.h:57:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:61:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:66:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:70:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:74:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:78:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:82:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:86:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:90:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:94:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:98:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:102:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:106:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:111:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:116:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:120:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:126:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:128:3: error: template specialization with C linkage
   template<> class ctype<char>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:130:3: error: template specialization with C linkage
   template<> class ctype<wchar_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:132:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:137:3: error: template with C linkage
   template<typename _InternT, typename _ExternT, typename _StateT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:139:3: error: template specialization with C linkage
   template<> class codecvt<char, char, mbstate_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:141:3: error: template specialization with C linkage
   template<> class codecvt<wchar_t, char, mbstate_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:143:3: error: template with C linkage
   template<typename _InternT, typename _ExternT, typename _StateT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:148:3: error: template with C linkage
   template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:150:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:154:3: error: template with C linkage
   template<typename _CharT> class numpunct;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:155:3: error: template with C linkage
   template<typename _CharT> class numpunct_byname;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:160:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:162:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:169:3: error: template with C linkage
   template<typename _CharT, typename _InIter =  istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:171:3: error: template with C linkage
   template<typename _CharT, typename _InIter =  istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:174:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:176:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:182:3: error: template with C linkage
   template<typename _CharT, typename _InIter =  istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:184:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:188:3: error: template with C linkage
   template<typename _CharT, bool _Intl = false>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:190:3: error: template with C linkage
   template<typename _CharT, bool _Intl = false>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:197:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:199:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/c++/7/iosfwd:40:0,
                 from /usr/include/c++/7/ios:38,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/postypes.h:111:3: error: template with C linkage
   template<typename _StateT>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:55:38: error: invalid use of incomplete type ‘class QObject’
 class Q_CORE_EXPORT QThread : public QObject
                                      ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:288:7: note: forward declaration of ‘class QObject’
 class QObject;
       ^~~~~~~
/usr/include/c++/7/bits/postypes.h:214:3: error: template with C linkage
   template<typename _StateT>
   ^~~~~~~~
/usr/include/c++/7/bits/postypes.h:219:3: error: template with C linkage
   template<typename _StateT>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:38:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/iosfwd:76:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:79:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:98:16: error: ‘QEvent’ has not been declared
     bool event(QEvent *event) Q_DECL_OVERRIDE;
                ^~~~~~
/usr/include/c++/7/iosfwd:82:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:85:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:88:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:94:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
/usr/include/c++/7/iosfwd:98:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
/usr/include/c++/7/iosfwd:102:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:98:10: error: ‘bool QThread::event(int*)’ marked ‘override’, but does not override
     bool event(QEvent *event) Q_DECL_OVERRIDE;
          ^~~~~
/usr/include/c++/7/iosfwd:106:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT>,
   ^~~~~~~~
/usr/include/c++/7/iosfwd:112:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:115:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:118:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/iosfwd:121:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/c++/7/iosfwd:124:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
/usr/include/c++/7/iosfwd:127:3: error: template with C linkage
   template<typename _CharT, typename _Traits = char_traits<_CharT> >
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:48,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:48,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QObject:1,
                 from /tmp/doomseeker-1.1_src/src/core/serverapi/masterclient.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/customservers.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/doomseekerconfig.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In member function ‘QThreadPrivate* QThread::d_func()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:128:5: error: ‘d_ptr’ was not declared in this scope
     Q_DECLARE_PRIVATE(QThread)
     ^
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/char_traits.h:61:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:86:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:148:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In member function ‘const QThreadPrivate* QThread::d_func() const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:128:5: error: ‘d_ptr’ was not declared in this scope
     Q_DECLARE_PRIVATE(QThread)
     ^
/usr/include/c++/7/bits/char_traits.h:161:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:172:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:183:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:192:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:202:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:268:3: error: template with C linkage
   template<class _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:274:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:387:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
make[2]: *** [src/core/CMakeFiles/doomseeker.dir/build.make:460: src/core/CMakeFiles/doomseeker.dir/application.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /usr/include/c++/7/ios:40:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/char_traits.h:507:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/char_traits.h:604:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/c++allocator.h:33:0,
                 from /usr/include/c++/7/bits/allocator.h:46,
                 from /usr/include/c++/7/string:41,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/ext/new_allocator.h:57:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ext/new_allocator.h:153:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ext/new_allocator.h:158:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/allocator.h:46:0,
                 from /usr/include/c++/7/string:41,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/c++/7/bits/c++allocator.h:47:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:41:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/allocator.h:67:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:107:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:144:3: error: template with C linkage
   template<typename _T1, typename _T2>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:150:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:156:3: error: template with C linkage
   template<typename _T1, typename _T2>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:162:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:41:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/localefwd.h:57:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:61:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:66:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:70:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:74:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:78:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:82:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:86:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:90:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:94:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:98:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:102:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:106:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:111:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:116:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:181:3: error: template with C linkage
   template<typename _Alloc, bool = __is_empty(_Alloc)>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:120:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:126:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:185:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:128:3: error: template specialization with C linkage
   template<> class ctype<char>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:130:3: error: template specialization with C linkage
   template<> class ctype<wchar_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:132:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:137:3: error: template with C linkage
   template<typename _InternT, typename _ExternT, typename _StateT>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:198:3: error: template with C linkage
   template<typename _Alloc, bool = __is_empty(_Alloc)>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:139:3: error: template specialization with C linkage
   template<> class codecvt<char, char, mbstate_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:141:3: error: template specialization with C linkage
   template<> class codecvt<wchar_t, char, mbstate_t>;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:143:3: error: template with C linkage
   template<typename _InternT, typename _ExternT, typename _StateT>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:206:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:148:3: error: template with C linkage
   template<typename _CharT, typename _InIter = istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:150:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:215:3: error: template with C linkage
   template<typename _Tp, bool
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:154:3: error: template with C linkage
   template<typename _CharT> class numpunct;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:155:3: error: template with C linkage
   template<typename _CharT> class numpunct_byname;
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:160:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:221:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:162:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:169:3: error: template with C linkage
   template<typename _CharT, typename _InIter =  istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:171:3: error: template with C linkage
   template<typename _CharT, typename _InIter =  istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:174:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:176:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:182:3: error: template with C linkage
   template<typename _CharT, typename _InIter =  istreambuf_iterator<_CharT> >
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:184:3: error: template with C linkage
   template<typename _CharT, typename _OutIter = ostreambuf_iterator<_CharT> >
   ^~~~~~~~
In file included from /usr/include/c++/7/string:44:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/ostream_insert.h:42:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:188:3: error: template with C linkage
   template<typename _CharT, bool _Intl = false>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:190:3: error: template with C linkage
   template<typename _CharT, bool _Intl = false>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:197:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/localefwd.h:199:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream_insert.h:55:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream_insert.h:74:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:48:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_function.h:104:3: error: template with C linkage
   template<typename _Arg, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:117:3: error: template with C linkage
   template<typename _Arg1, typename _Arg2, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:166:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:176:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:186:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:196:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:206:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:216:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:350:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:360:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:370:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:380:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:390:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:400:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:523:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
make[2]: *** [src/core/CMakeFiles/doomseeker.dir/build.make:484: src/core/CMakeFiles/doomseeker.dir/apprunner.cpp.o] Error 1
/usr/include/c++/7/bits/stl_function.h:533:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:543:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:616:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:625:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:634:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:643:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:740:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:759:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:766:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:787:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:817:3: error: template with C linkage
   template<typename _Arg, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:836:3: error: template with C linkage
   template<typename _Arg, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:842:3: error: template with C linkage
   template<typename _Arg1, typename _Arg2, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:862:3: error: template with C linkage
   template<typename _Arg1, typename _Arg2, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:868:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:881:3: error: template with C linkage
   template<typename _Pair>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:906:3: error: template with C linkage
   template<typename _Pair>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:937:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:955:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:973:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:991:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1009:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1027:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1045:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1063:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1081:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1086:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1091:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1096:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1101:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1106:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1111:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1116:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_function.h:1127:0,
                 from /usr/include/c++/7/string:48,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/backward/binders.h:107:3: error: template with C linkage
   template<typename _Operation>
   ^~~~~~~~
/usr/include/c++/7/backward/binders.h:133:3: error: template with C linkage
   template<typename _Operation, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/backward/binders.h:142:3: error: template with C linkage
   template<typename _Operation>
   ^~~~~~~~
/usr/include/c++/7/backward/binders.h:168:3: error: template with C linkage
   template<typename _Operation, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:51:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/range_access.h:46:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:56:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:66:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:76:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:85:3: error: template with C linkage
   template<typename _Tp, size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:95:3: error: template with C linkage
   template<typename _Tp, size_t _Nm>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/basic_string.h:76:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/7/bits/c++allocator.h:33:0,
                 from /usr/include/c++/7/bits/allocator.h:46,
                 from /usr/include/c++/7/string:41,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/ext/new_allocator.h:57:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ext/new_allocator.h:153:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ext/new_allocator.h:158:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/allocator.h:46:0,
                 from /usr/include/c++/7/string:41,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/c++/7/bits/c++allocator.h:47:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:41:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/allocator.h:67:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:107:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:144:3: error: template with C linkage
   template<typename _T1, typename _T2>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:150:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:156:3: error: template with C linkage
   template<typename _T1, typename _T2>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:162:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:181:3: error: template with C linkage
   template<typename _Alloc, bool = __is_empty(_Alloc)>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:185:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:198:3: error: template with C linkage
   template<typename _Alloc, bool = __is_empty(_Alloc)>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:206:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:215:3: error: template with C linkage
   template<typename _Tp, bool
   ^~~~~~~~
/usr/include/c++/7/bits/allocator.h:221:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:44:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/ostream_insert.h:42:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream_insert.h:55:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream_insert.h:74:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:48:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_function.h:104:3: error: template with C linkage
   template<typename _Arg, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:117:3: error: template with C linkage
   template<typename _Arg1, typename _Arg2, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:166:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:176:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:186:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:196:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:206:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:216:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:350:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:360:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:370:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:380:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:390:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:400:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:523:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:533:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:543:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:616:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:625:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:634:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:643:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:740:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:759:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:766:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:787:3: error: template with C linkage
   template<typename _Predicate>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:817:3: error: template with C linkage
   template<typename _Arg, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:836:3: error: template with C linkage
   template<typename _Arg, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:842:3: error: template with C linkage
   template<typename _Arg1, typename _Arg2, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:862:3: error: template with C linkage
   template<typename _Arg1, typename _Arg2, typename _Result>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:868:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:881:3: error: template with C linkage
   template<typename _Pair>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:906:3: error: template with C linkage
   template<typename _Pair>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:937:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:955:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:973:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:991:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1009:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1027:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1045:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1063:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1081:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1086:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1091:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1096:3: error: template with C linkage
   template<typename _Ret, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1101:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1106:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1111:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_function.h:1116:3: error: template with C linkage
   template<typename _Ret, typename _Tp, typename _Arg>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_function.h:1127:0,
                 from /usr/include/c++/7/string:48,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/backward/binders.h:107:3: error: template with C linkage
   template<typename _Operation>
   ^~~~~~~~
/usr/include/c++/7/backward/binders.h:133:3: error: template with C linkage
   template<typename _Operation, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/backward/binders.h:142:3: error: template with C linkage
   template<typename _Operation>
   ^~~~~~~~
/usr/include/c++/7/backward/binders.h:168:3: error: template with C linkage
   template<typename _Operation, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:51:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/range_access.h:46:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:56:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:66:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:76:3: error: template with C linkage
   template<typename _Container>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:85:3: error: template with C linkage
   template<typename _Tp, size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/range_access.h:95:3: error: template with C linkage
   template<typename _Tp, size_t _Nm>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/basic_string.h:76:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5874:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5890:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5901:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5911:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5927:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5939:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5945:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5951:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5963:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5969:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5975:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5981:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5995:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6002:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6017:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6029:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6042:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6055:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6067:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6080:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6093:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6105:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6118:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6131:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6143:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6156:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6169:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6181:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6194:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6207:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6219:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6232:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6252:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6257:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6270:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6293:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6310:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6318:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6325:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6332:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6338:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:6349:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/ext/string_conversions.h:51:3: error: template with C linkage
   template<typename _TRet, typename _Ret = _TRet, typename _CharT,
   ^~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:97:3: error: template with C linkage
   template<typename _String, typename _CharT = typename _String::value_type>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5874:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5890:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5901:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5911:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5927:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5939:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5945:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5951:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5963:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5969:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5975:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5981:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:5995:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6002:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6017:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6029:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6042:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6055:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6067:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6080:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6407:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6093:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6105:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long int)’:
/usr/include/c++/7/bits/basic_string.h:6413:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6118:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6131:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6143:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6418:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6156:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6169:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6181:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6194:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’:
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6207:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6219:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6232:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6252:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6257:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6270:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(float)’:
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6293:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6310:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6318:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6325:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6332:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6338:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(double)’:
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long double)’:
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘int std::__cxx11::stoi(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6465:3: error: conflicting declaration of C function ‘int std::__cxx11::stoi(const wstring&, std::size_t*, int)’
   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6359:3: note: previous declaration ‘int std::__cxx11::stoi(const string&, std::size_t*, int)’
   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
In file included from /usr/include/c++/7/bits/basic_string.h:6349:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/ext/string_conversions.h:51:3: error: template with C linkage
   template<typename _TRet, typename _Ret = _TRet, typename _CharT,
   ^~~~~~~~
/usr/include/c++/7/ext/string_conversions.h:97:3: error: template with C linkage
   template<typename _String, typename _CharT = typename _String::value_type>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long int std::__cxx11::stol(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6470:3: error: conflicting declaration of C function ‘long int std::__cxx11::stol(const wstring&, std::size_t*, int)’
   stol(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6364:3: note: previous declaration ‘long int std::__cxx11::stol(const string&, std::size_t*, int)’
   stol(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long unsigned int std::__cxx11::stoul(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6475:3: error: conflicting declaration of C function ‘long unsigned int std::__cxx11::stoul(const wstring&, std::size_t*, int)’
   stoul(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h:6369:3: note: previous declaration ‘long unsigned int std::__cxx11::stoul(const string&, std::size_t*, int)’
   stoul(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long long int std::__cxx11::stoll(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6480:3: error: conflicting declaration of C function ‘long long int std::__cxx11::stoll(const wstring&, std::size_t*, int)’
   stoll(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h:6374:3: note: previous declaration ‘long long int std::__cxx11::stoll(const string&, std::size_t*, int)’
   stoll(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long long unsigned int std::__cxx11::stoull(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6485:3: error: conflicting declaration of C function ‘long long unsigned int std::__cxx11::stoull(const wstring&, std::size_t*, int)’
   stoull(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~~
/usr/include/c++/7/bits/basic_string.h:6379:3: note: previous declaration ‘long long unsigned int std::__cxx11::stoull(const string&, std::size_t*, int)’
   stoull(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘float std::__cxx11::stof(const wstring&, std::size_t*)’:
/usr/include/c++/7/bits/basic_string.h:6491:3: error: conflicting declaration of C function ‘float std::__cxx11::stof(const wstring&, std::size_t*)’
   stof(const wstring& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6385:3: note: previous declaration ‘float std::__cxx11::stof(const string&, std::size_t*)’
   stof(const string& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘double std::__cxx11::stod(const wstring&, std::size_t*)’:
/usr/include/c++/7/bits/basic_string.h:6495:3: error: conflicting declaration of C function ‘double std::__cxx11::stod(const wstring&, std::size_t*)’
   stod(const wstring& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6389:3: note: previous declaration ‘double std::__cxx11::stod(const string&, std::size_t*)’
   stod(const string& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long double std::__cxx11::stold(const wstring&, std::size_t*)’:
/usr/include/c++/7/bits/basic_string.h:6499:3: error: conflicting declaration of C function ‘long double std::__cxx11::stold(const wstring&, std::size_t*)’
   stold(const wstring& __str, size_t* __idx = 0)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h:6393:3: note: previous declaration ‘long double std::__cxx11::stold(const string&, std::size_t*)’
   stold(const string& __str, size_t* __idx = 0)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6510:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’:
/usr/include/c++/7/bits/basic_string.h:6516:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6521:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’:
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’:
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’:
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6407:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’:
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long int)’:
/usr/include/c++/7/bits/basic_string.h:6413:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6418:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:6575:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/functional_hash.h: At global scope:
/usr/include/c++/7/bits/functional_hash.h:49:3: error: template with C linkage
   template<typename _Result, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’:
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:57:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:60:3: error: template with C linkage
   template<typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:70:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:77:3: error: template with C linkage
   template<typename _Tp, bool = is_enum<_Tp>::value>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:87:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:100:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(float)’:
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:105:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:124:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(bool)
   ^
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:127:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(char)
   ^
/usr/include/c++/7/bits/functional_hash.h:130:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(signed char)
   ^
/usr/include/c++/7/bits/functional_hash.h:133:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned char)
   ^
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(double)’:
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6436:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:136:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(wchar_t)
   ^
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:139:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(char16_t)
   ^
/usr/include/c++/7/bits/functional_hash.h:142:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(char32_t)
   ^
/usr/include/c++/7/bits/functional_hash.h:145:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(short)
   ^
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::string std::__cxx11::to_string(long double)’:
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6445:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(double)’
   to_string(double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:148:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(int)
   ^
/usr/include/c++/7/bits/basic_string.h:6436:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(float)’
   to_string(float __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6430:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long unsigned int)’
   to_string(unsigned long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6424:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long long int)’
   to_string(long long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6418:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long unsigned int)’
   to_string(unsigned long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6413:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(long int)’
   to_string(long __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:151:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(long)
   ^
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6407:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(unsigned int)’
   to_string(unsigned __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6454:3: error: conflicting declaration of C function ‘std::__cxx11::string std::__cxx11::to_string(long double)’
   to_string(long double __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6402:3: note: previous declaration ‘std::__cxx11::string std::__cxx11::to_string(int)’
   to_string(int __val)
   ^~~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:154:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(long long)
   ^
/usr/include/c++/7/bits/functional_hash.h:157:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned short)
   ^
/usr/include/c++/7/bits/functional_hash.h:160:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned int)
   ^
/usr/include/c++/7/bits/basic_string.h: In function ‘int std::__cxx11::stoi(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6465:3: error: conflicting declaration of C function ‘int std::__cxx11::stoi(const wstring&, std::size_t*, int)’
   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6359:3: note: previous declaration ‘int std::__cxx11::stoi(const string&, std::size_t*, int)’
   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/functional_hash.h:163:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned long)
   ^
/usr/include/c++/7/bits/functional_hash.h:166:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned long long)
   ^
/usr/include/c++/7/bits/functional_hash.h:169:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(__GLIBCXX_TYPE_INT_N_0)
   ^
/usr/include/c++/7/bits/functional_hash.h:170:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(__GLIBCXX_TYPE_INT_N_0 unsigned)
   ^
/usr/include/c++/7/bits/functional_hash.h:194:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:199:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:213:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:218:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:225:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:237:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:249:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:263:3: error: template with C linkage
   template<typename _Hash>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:267:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/basic_string.h:6585:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6594:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6600:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6610:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6618:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long int std::__cxx11::stol(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6470:3: error: conflicting declaration of C function ‘long int std::__cxx11::stol(const wstring&, std::size_t*, int)’
   stol(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6364:3: note: previous declaration ‘long int std::__cxx11::stol(const string&, std::size_t*, int)’
   stol(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long unsigned int std::__cxx11::stoul(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6475:3: error: conflicting declaration of C function ‘long unsigned int std::__cxx11::stoul(const wstring&, std::size_t*, int)’
   stoul(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h:6369:3: note: previous declaration ‘long unsigned int std::__cxx11::stoul(const string&, std::size_t*, int)’
   stoul(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long long int std::__cxx11::stoll(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6480:3: error: conflicting declaration of C function ‘long long int std::__cxx11::stoll(const wstring&, std::size_t*, int)’
   stoll(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h:6374:3: note: previous declaration ‘long long int std::__cxx11::stoll(const string&, std::size_t*, int)’
   stoll(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long long unsigned int std::__cxx11::stoull(const wstring&, std::size_t*, int)’:
/usr/include/c++/7/bits/basic_string.h:6485:3: error: conflicting declaration of C function ‘long long unsigned int std::__cxx11::stoull(const wstring&, std::size_t*, int)’
   stoull(const wstring& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~~
/usr/include/c++/7/bits/basic_string.h:6379:3: note: previous declaration ‘long long unsigned int std::__cxx11::stoull(const string&, std::size_t*, int)’
   stoull(const string& __str, size_t* __idx = 0, int __base = 10)
   ^~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘float std::__cxx11::stof(const wstring&, std::size_t*)’:
/usr/include/c++/7/bits/basic_string.h:6491:3: error: conflicting declaration of C function ‘float std::__cxx11::stof(const wstring&, std::size_t*)’
   stof(const wstring& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6385:3: note: previous declaration ‘float std::__cxx11::stof(const string&, std::size_t*)’
   stof(const string& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘double std::__cxx11::stod(const wstring&, std::size_t*)’:
/usr/include/c++/7/bits/basic_string.h:6495:3: error: conflicting declaration of C function ‘double std::__cxx11::stod(const wstring&, std::size_t*)’
   stod(const wstring& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h:6389:3: note: previous declaration ‘double std::__cxx11::stod(const string&, std::size_t*)’
   stod(const string& __str, size_t* __idx = 0)
   ^~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘long double std::__cxx11::stold(const wstring&, std::size_t*)’:
/usr/include/c++/7/bits/basic_string.h:6499:3: error: conflicting declaration of C function ‘long double std::__cxx11::stold(const wstring&, std::size_t*)’
   stold(const wstring& __str, size_t* __idx = 0)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h:6393:3: note: previous declaration ‘long double std::__cxx11::stold(const string&, std::size_t*)’
   stold(const string& __str, size_t* __idx = 0)
   ^~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6510:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’:
/usr/include/c++/7/bits/basic_string.h:6516:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6521:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6628:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’:
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6633:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’:
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’:
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’:
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h: In function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’:
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6548:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(double)’
   to_wstring(double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6539:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(float)’
   to_wstring(float __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6533:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long unsigned int)’
   to_wstring(unsigned long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6527:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long long int)’
   to_wstring(long long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6521:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long unsigned int)’
   to_wstring(unsigned long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6516:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(long int)’
   to_wstring(long __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6510:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(unsigned int)’
   to_wstring(unsigned __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6557:3: error: conflicting declaration of C function ‘std::__cxx11::wstring std::__cxx11::to_wstring(long double)’
   to_wstring(long double __val)
   ^~~~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6505:3: note: previous declaration ‘std::__cxx11::wstring std::__cxx11::to_wstring(int)’
   to_wstring(int __val)
   ^~~~~~~~~~
In file included from /usr/include/c++/7/bits/basic_string.h:6575:0,
                 from /usr/include/c++/7/string:52,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/functional_hash.h: At global scope:
/usr/include/c++/7/bits/functional_hash.h:49:3: error: template with C linkage
   template<typename _Result, typename _Arg>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:57:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:60:3: error: template with C linkage
   template<typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:70:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:77:3: error: template with C linkage
   template<typename _Tp, bool = is_enum<_Tp>::value>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:87:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:100:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:105:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:124:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(bool)
   ^
/usr/include/c++/7/bits/functional_hash.h:127:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(char)
   ^
/usr/include/c++/7/bits/functional_hash.h:130:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(signed char)
   ^
/usr/include/c++/7/bits/functional_hash.h:133:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned char)
   ^
/usr/include/c++/7/bits/functional_hash.h:136:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(wchar_t)
   ^
/usr/include/c++/7/bits/functional_hash.h:139:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(char16_t)
   ^
/usr/include/c++/7/bits/functional_hash.h:142:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(char32_t)
   ^
/usr/include/c++/7/bits/functional_hash.h:145:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(short)
   ^
/usr/include/c++/7/bits/functional_hash.h:148:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(int)
   ^
/usr/include/c++/7/bits/functional_hash.h:151:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(long)
   ^
/usr/include/c++/7/bits/functional_hash.h:154:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(long long)
   ^
/usr/include/c++/7/bits/functional_hash.h:157:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned short)
   ^
/usr/include/c++/7/bits/functional_hash.h:160:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned int)
   ^
/usr/include/c++/7/bits/functional_hash.h:163:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned long)
   ^
/usr/include/c++/7/bits/functional_hash.h:166:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(unsigned long long)
   ^
/usr/include/c++/7/bits/functional_hash.h:169:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(__GLIBCXX_TYPE_INT_N_0)
   ^
/usr/include/c++/7/bits/functional_hash.h:170:3: error: template specialization with C linkage
   _Cxx_hashtable_define_trivial_hash(__GLIBCXX_TYPE_INT_N_0 unsigned)
   ^
/usr/include/c++/7/bits/basic_string.h:6643:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:194:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
In file included from /usr/include/c++/7/string:53:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/basic_string.tcc:52:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:199:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:56:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:213:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:218:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:225:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:130:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:237:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:160:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:249:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:263:3: error: template with C linkage
   template<typename _Hash>
   ^~~~~~~~
/usr/include/c++/7/bits/functional_hash.h:267:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:203:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/string:52:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/basic_string.h:6585:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:235:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6594:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6600:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:252:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6610:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:278:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6618:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:308:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:332:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:345:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:357:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:376:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:390:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:419:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:472:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1155:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1171:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1185:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1221:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1239:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1261:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1278:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1294:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1316:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1329:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1340:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1362:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1382:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1397:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1415:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1430:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6628:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6633:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1446:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1463:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1535:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qiodevice.h:45,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qdatastream.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/qregion.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/qevent.h:45,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/QList:1,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:55:38: error: invalid use of incomplete type ‘class QObject’
 class Q_CORE_EXPORT QThread : public QObject
                                      ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:91:7: note: forward declaration of ‘class QObject’
 class QObject;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1:0,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qiodevice.h:45,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qdatastream.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/qregion.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/qevent.h:45,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/QList:1,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:98:16: error: ‘QEvent’ has not been declared
     bool event(QEvent *event) Q_DECL_OVERRIDE;
                ^~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:98:10: error: ‘bool QThread::event(int*)’ marked ‘override’, but does not override
     bool event(QEvent *event) Q_DECL_OVERRIDE;
          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtGui/qwindowdefs.h:44:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/qevent.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/QList:1,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtGui/qwindowdefs.h:44:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/qevent.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtGui/QList:1,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/configuration/passwordscfg.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In member function ‘QThreadPrivate* QThread::d_func()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:128:5: error: ‘d_ptr’ was not declared in this scope
     Q_DECLARE_PRIVATE(QThread)
     ^
In file included from /usr/include/c++/7/bits/ios_base.h:41:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/locale_classes.h:77:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:81:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:85:5: error: template with C linkage
     template<typename _Cache>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:205:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:234:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:282:5: error: template with C linkage
     template<typename _Char, typename _Traits, typename _Alloc>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In member function ‘const QThreadPrivate* QThread::d_func() const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:128:5: error: ‘d_ptr’ was not declared in this scope
     Q_DECLARE_PRIVATE(QThread)
     ^
/usr/include/c++/7/bits/locale_classes.h:489:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:493:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/basic_string.h:6643:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:529:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:533:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:537:5: error: template with C linkage
     template<typename _Cache>
     ^~~~~~~~
In file included from /usr/include/c++/7/string:53:0,
                 from /usr/include/c++/7/bits/locale_classes.h:40,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/basic_string.tcc:52:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:56:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:608:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:613:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:130:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:160:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:641:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:203:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:235:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:252:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:792:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:796:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:278:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:308:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:800:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:805:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:332:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:809:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:345:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:815:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:357:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:376:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/locale_classes.h:851:0,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/locale_classes.tcc:43:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:390:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:60:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:78:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:419:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:102:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:130:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:147:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:472:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:153:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:158:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1155:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1171:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:197:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1185:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:253:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1221:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1239:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1261:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1278:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1294:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1316:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1329:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1340:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1362:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1382:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1397:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1415:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1430:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1446:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1463:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/system_error:52:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/system_error:56:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/system_error:59:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_string.tcc:1535:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/system_error:141:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/system_error:154:5: error: template with C linkage
     template<typename _ErrorCodeEnum, typename = typename
     ^~~~~~~~
/usr/include/c++/7/system_error:171:5: error: template with C linkage
     template<typename _ErrorCodeEnum>
     ^~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:41:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/locale_classes.h:77:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:81:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:85:5: error: template with C linkage
     template<typename _Cache>
     ^~~~~~~~
/usr/include/c++/7/system_error:215:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:205:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:234:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/system_error:232:5: error: template with C linkage
     template<typename _ErrorConditionEnum, typename = typename
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:282:5: error: template with C linkage
     template<typename _Char, typename _Traits, typename _Alloc>
     ^~~~~~~~
/usr/include/c++/7/system_error:245:5: error: template with C linkage
     template<typename _ErrorConditionEnum>
     ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator<(const std::error_condition&, const std::error_condition&)’:
/usr/include/c++/7/system_error:282:3: error: conflicting declaration of C function ‘bool std::operator<(const std::error_condition&, const std::error_condition&)’
   operator<(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:208:3: note: previous declaration ‘bool std::operator<(const std::error_code&, const std::error_code&)’
   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator==(const std::error_code&, const std::error_condition&)’:
/usr/include/c++/7/system_error:297:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
   operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:292:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_code&)’
   operator==(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:489:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:493:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator==(const std::error_condition&, const std::error_code&)’:
/usr/include/c++/7/system_error:304:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
   operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:297:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
   operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:304:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
   operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:292:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_code&)’
   operator==(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:529:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:533:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:537:5: error: template with C linkage
     template<typename _Cache>
     ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’:
/usr/include/c++/7/system_error:311:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
   operator==(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:304:3: note: previous declaration ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
   operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:311:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
   operator==(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:297:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
   operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:311:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
   operator==(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:292:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_code&)’
   operator==(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:608:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:613:5: error: template with C linkage
     template<typename _Facet>
     ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’:
/usr/include/c++/7/system_error:323:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’
   operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_code&)’
   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’:
/usr/include/c++/7/system_error:327:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’
   operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:323:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’
   operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:327:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’
   operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_code&)’
   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’:
/usr/include/c++/7/system_error:331:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’
   operator!=(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:327:3: note: previous declaration ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’
   operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:331:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’
   operator!=(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:323:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’
   operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:331:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’
   operator!=(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_code&)’
   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:641:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:792:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:796:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:800:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:805:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:809:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.h:815:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/locale_classes.h:851:0,
                 from /usr/include/c++/7/bits/ios_base.h:41,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/locale_classes.tcc:43:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:60:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:78:3: error: template with C linkage
   template<typename _CharT, typename _Traits, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:102:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:130:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:147:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:153:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:158:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/system_error: At global scope:
/usr/include/c++/7/system_error:385:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:197:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_classes.tcc:253:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:42:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator&(std::_Ios_Openmode, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:125:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator&(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator&(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:83:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator&(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator|(std::_Ios_Openmode, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:129:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator|(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator|(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:87:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator|(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator|(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator^(std::_Ios_Openmode, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:133:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator^(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator^(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:91:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator^(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator^(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator~(std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:137:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator~(std::_Ios_Openmode)’
   operator~(_Ios_Openmode __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:95:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator~(std::_Ios_Fmtflags)’
   operator~(_Ios_Fmtflags __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Openmode& std::operator|=(std::_Ios_Openmode&, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:141:3: error: conflicting declaration of C function ‘const std::_Ios_Openmode& std::operator|=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator|=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:99:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator|=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator|=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Openmode& std::operator&=(std::_Ios_Openmode&, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:145:3: error: conflicting declaration of C function ‘const std::_Ios_Openmode& std::operator&=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator&=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:103:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator&=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator&=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:149:3: error: conflicting declaration of C function ‘const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:107:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator&(std::_Ios_Iostate, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:165:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator&(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator&(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:125:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator&(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator&(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:165:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator&(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator&(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:83:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator&(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator|(std::_Ios_Iostate, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:169:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator|(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator|(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:129:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator|(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator|(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:169:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator|(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator|(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:87:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator|(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator|(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator^(std::_Ios_Iostate, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:173:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator^(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator^(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:133:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator^(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator^(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:173:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator^(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator^(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:91:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator^(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator^(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator~(std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:177:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator~(std::_Ios_Iostate)’
   operator~(_Ios_Iostate __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:137:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator~(std::_Ios_Openmode)’
   operator~(_Ios_Openmode __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:177:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator~(std::_Ios_Iostate)’
   operator~(_Ios_Iostate __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:95:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator~(std::_Ios_Fmtflags)’
   operator~(_Ios_Fmtflags __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Iostate& std::operator|=(std::_Ios_Iostate&, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:181:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator|=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator|=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:141:3: note: previous declaration ‘const std::_Ios_Openmode& std::operator|=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator|=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:181:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator|=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator|=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:99:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator|=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator|=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Iostate& std::operator&=(std::_Ios_Iostate&, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:185:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator&=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator&=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:145:3: note: previous declaration ‘const std::_Ios_Openmode& std::operator&=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator&=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:185:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator&=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator&=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:103:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator&=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator&=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:189:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:149:3: note: previous declaration ‘const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:189:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:107:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: At global scope:
/usr/include/c++/7/bits/ios_base.h:205:3: error: template specialization with C linkage
   template <> struct is_error_code_enum<io_errc> : public true_type { };
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘std::error_code std::make_error_code(std::io_errc)’:
/usr/include/c++/7/bits/ios_base.h:210:3: error: conflicting declaration of C function ‘std::error_code std::make_error_code(std::io_errc)’
   make_error_code(io_errc __e) noexcept
   ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/system_error:204:3: note: previous declaration ‘std::error_code std::make_error_code(std::errc)’
   make_error_code(errc __e) noexcept
   ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/ios:42:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/ios_base.h: In function ‘std::error_condition std::make_error_condition(std::io_errc)’:
/usr/include/c++/7/bits/ios_base.h:214:3: error: conflicting declaration of C function ‘std::error_condition std::make_error_condition(std::io_errc)’
   make_error_condition(io_errc __e) noexcept
   ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/system_error:278:3: note: previous declaration ‘std::error_condition std::make_error_condition(std::errc)’
   make_error_condition(errc __e) noexcept
   ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/system_error:52:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/system_error:56:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/system_error:59:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/system_error:141:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/system_error:154:5: error: template with C linkage
     template<typename _ErrorCodeEnum, typename = typename
     ^~~~~~~~
/usr/include/c++/7/system_error:171:5: error: template with C linkage
     template<typename _ErrorCodeEnum>
     ^~~~~~~~
/usr/include/c++/7/system_error:215:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/system_error:232:5: error: template with C linkage
     template<typename _ErrorConditionEnum, typename = typename
     ^~~~~~~~
/usr/include/c++/7/system_error:245:5: error: template with C linkage
     template<typename _ErrorConditionEnum>
     ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator<(const std::error_condition&, const std::error_condition&)’:
/usr/include/c++/7/system_error:282:3: error: conflicting declaration of C function ‘bool std::operator<(const std::error_condition&, const std::error_condition&)’
   operator<(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:208:3: note: previous declaration ‘bool std::operator<(const std::error_code&, const std::error_code&)’
   operator<(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator==(const std::error_code&, const std::error_condition&)’:
/usr/include/c++/7/system_error:297:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
   operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:292:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_code&)’
   operator==(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator==(const std::error_condition&, const std::error_code&)’:
/usr/include/c++/7/system_error:304:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
   operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:297:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
   operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:304:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
   operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:292:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_code&)’
   operator==(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:43:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/streambuf: At global scope:
/usr/include/c++/7/streambuf:49:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/streambuf:119:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’:
/usr/include/c++/7/system_error:311:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
   operator==(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:304:3: note: previous declaration ‘bool std::operator==(const std::error_condition&, const std::error_code&)’
   operator==(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:311:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
   operator==(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:297:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_condition&)’
   operator==(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:311:3: error: conflicting declaration of C function ‘bool std::operator==(const std::error_condition&, const std::error_condition&)’
   operator==(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:292:3: note: previous declaration ‘bool std::operator==(const std::error_code&, const std::error_code&)’
   operator==(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’:
/usr/include/c++/7/system_error:323:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’
   operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_code&)’
   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’:
/usr/include/c++/7/system_error:327:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’
   operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:323:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’
   operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:327:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’
   operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_code&)’
   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: In function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’:
/usr/include/c++/7/system_error:331:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’
   operator!=(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:327:3: note: previous declaration ‘bool std::operator!=(const std::error_condition&, const std::error_code&)’
   operator!=(const error_condition& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:331:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’
   operator!=(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:323:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_condition&)’
   operator!=(const error_code& __lhs, const error_condition& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error:331:3: error: conflicting declaration of C function ‘bool std::operator!=(const std::error_condition&, const std::error_condition&)’
   operator!=(const error_condition& __lhs,
   ^~~~~~~~
/usr/include/c++/7/system_error:319:3: note: previous declaration ‘bool std::operator!=(const std::error_code&, const std::error_code&)’
   operator!=(const error_code& __lhs, const error_code& __rhs) noexcept
   ^~~~~~~~
/usr/include/c++/7/system_error: At global scope:
/usr/include/c++/7/system_error:385:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:42:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator&(std::_Ios_Openmode, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:125:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator&(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator&(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:83:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator&(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator|(std::_Ios_Openmode, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:129:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator|(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator|(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:87:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator|(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator|(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator^(std::_Ios_Openmode, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:133:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator^(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator^(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:91:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator^(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator^(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Openmode std::operator~(std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:137:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Openmode std::operator~(std::_Ios_Openmode)’
   operator~(_Ios_Openmode __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:95:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator~(std::_Ios_Fmtflags)’
   operator~(_Ios_Fmtflags __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Openmode& std::operator|=(std::_Ios_Openmode&, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:141:3: error: conflicting declaration of C function ‘const std::_Ios_Openmode& std::operator|=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator|=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:99:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator|=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator|=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Openmode& std::operator&=(std::_Ios_Openmode&, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:145:3: error: conflicting declaration of C function ‘const std::_Ios_Openmode& std::operator&=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator&=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:103:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator&=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator&=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)’:
/usr/include/c++/7/bits/ios_base.h:149:3: error: conflicting declaration of C function ‘const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:107:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator&(std::_Ios_Iostate, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:165:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator&(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator&(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:125:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator&(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator&(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:165:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator&(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator&(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:83:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator&(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator|(std::_Ios_Iostate, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:169:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator|(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator|(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:129:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator|(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator|(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:169:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator|(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator|(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:87:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator|(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator|(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator^(std::_Ios_Iostate, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:173:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator^(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator^(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:133:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator^(std::_Ios_Openmode, std::_Ios_Openmode)’
   operator^(_Ios_Openmode __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:173:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator^(std::_Ios_Iostate, std::_Ios_Iostate)’
   operator^(_Ios_Iostate __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:91:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator^(std::_Ios_Fmtflags, std::_Ios_Fmtflags)’
   operator^(_Ios_Fmtflags __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘constexpr std::_Ios_Iostate std::operator~(std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:177:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator~(std::_Ios_Iostate)’
   operator~(_Ios_Iostate __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:137:3: note: previous declaration ‘constexpr std::_Ios_Openmode std::operator~(std::_Ios_Openmode)’
   operator~(_Ios_Openmode __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:177:3: error: conflicting declaration of C function ‘constexpr std::_Ios_Iostate std::operator~(std::_Ios_Iostate)’
   operator~(_Ios_Iostate __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:95:3: note: previous declaration ‘constexpr std::_Ios_Fmtflags std::operator~(std::_Ios_Fmtflags)’
   operator~(_Ios_Fmtflags __a)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Iostate& std::operator|=(std::_Ios_Iostate&, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:181:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator|=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator|=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:141:3: note: previous declaration ‘const std::_Ios_Openmode& std::operator|=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator|=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:181:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator|=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator|=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:99:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator|=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator|=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Iostate& std::operator&=(std::_Ios_Iostate&, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:185:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator&=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator&=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:145:3: note: previous declaration ‘const std::_Ios_Openmode& std::operator&=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator&=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:185:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator&=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator&=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:103:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator&=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator&=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)’:
/usr/include/c++/7/bits/ios_base.h:189:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:149:3: note: previous declaration ‘const std::_Ios_Openmode& std::operator^=(std::_Ios_Openmode&, std::_Ios_Openmode)’
   operator^=(_Ios_Openmode& __a, _Ios_Openmode __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:189:3: error: conflicting declaration of C function ‘const std::_Ios_Iostate& std::operator^=(std::_Ios_Iostate&, std::_Ios_Iostate)’
   operator^=(_Ios_Iostate& __a, _Ios_Iostate __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h:107:3: note: previous declaration ‘const std::_Ios_Fmtflags& std::operator^=(std::_Ios_Fmtflags&, std::_Ios_Fmtflags)’
   operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b)
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: At global scope:
/usr/include/c++/7/bits/ios_base.h:205:3: error: template specialization with C linkage
   template <> struct is_error_code_enum<io_errc> : public true_type { };
   ^~~~~~~~
/usr/include/c++/7/bits/ios_base.h: In function ‘std::error_code std::make_error_code(std::io_errc)’:
/usr/include/c++/7/bits/ios_base.h:210:3: error: conflicting declaration of C function ‘std::error_code std::make_error_code(std::io_errc)’
   make_error_code(io_errc __e) noexcept
   ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/system_error:204:3: note: previous declaration ‘std::error_code std::make_error_code(std::errc)’
   make_error_code(errc __e) noexcept
   ^~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/ios:42:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/ios_base.h: In function ‘std::error_condition std::make_error_condition(std::io_errc)’:
/usr/include/c++/7/bits/ios_base.h:214:3: error: conflicting declaration of C function ‘std::error_condition std::make_error_condition(std::io_errc)’
   make_error_condition(io_errc __e) noexcept
   ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/7/bits/ios_base.h:46:0,
                 from /usr/include/c++/7/ios:42,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/system_error:278:3: note: previous declaration ‘std::error_condition std::make_error_condition(std::errc)’
   make_error_condition(errc __e) noexcept
   ^~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/streambuf:825:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/streambuf:829:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/streambuf:836:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/streambuf:841:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/streambuf:850:0,
                 from /usr/include/c++/7/ios:43,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/streambuf.tcc:43:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf.tcc:77:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf.tcc:114:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf.tcc:137:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:43:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/streambuf: At global scope:
/usr/include/c++/7/streambuf:49:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/streambuf:119:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/locale_facets.h:48:0,
                 from /usr/include/c++/7/bits/basic_ios.h:37,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/streambuf_iterator.h:49:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:202:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:208:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:215:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:290:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:307:3: error: template with C linkage
   template<bool _IsMove, typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:319:3: error: template with C linkage
   template<bool _IsMove, typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:331:3: error: template with C linkage
   template<bool _IsMove, typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:366:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_ios.h:37:0,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/locale_facets.h:71:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:77:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:82:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:87:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:94:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:107:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:116:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:126:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:149:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:611:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:668:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/streambuf:825:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:680:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/streambuf:829:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/streambuf:836:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/streambuf:841:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/streambuf:850:0,
                 from /usr/include/c++/7/ios:43,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/streambuf.tcc:43:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf.tcc:77:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf.tcc:114:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf.tcc:137:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1181:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1473:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1494:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1512:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_ios.h:37:0,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/locale_facets.h:1590:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1638:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1665:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1878:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1881:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1884:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/locale_facets.h:48:0,
                 from /usr/include/c++/7/bits/basic_ios.h:37,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/streambuf_iterator.h:49:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1889:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1892:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1898:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1947:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:202:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:208:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:215:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:290:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:307:3: error: template with C linkage
   template<bool _IsMove, typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:319:3: error: template with C linkage
   template<bool _IsMove, typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:331:3: error: template with C linkage
   template<bool _IsMove, typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/streambuf_iterator.h:366:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2272:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2288:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_ios.h:37:0,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/locale_facets.h:71:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:77:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:82:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:87:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:94:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:107:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:116:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:126:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:149:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2552:3: error: template with C linkage
   template <typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2563:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2569:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2575:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2581:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2587:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2593:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2599:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2605:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2611:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:611:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2617:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2623:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2630:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2637:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2643:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:668:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:680:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/locale_facets.h:2651:0,
                 from /usr/include/c++/7/bits/basic_ios.h:37,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/locale_facets.tcc:41:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:49:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:76:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:145:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1181:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:370:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1473:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1494:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1512:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_ios.h:37:0,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/locale_facets.h:1590:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:592:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1638:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1665:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:688:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:703:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1878:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1881:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:735:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1884:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:750:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1889:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:777:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1892:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1898:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:792:3: error: template with C linkage
   template<typename _CharT, typename _ValueT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:1947:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:836:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:847:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:936:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:971:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2272:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2288:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1103:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2552:3: error: template with C linkage
   template <typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2563:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2569:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2575:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2581:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2587:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2593:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2599:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1155:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2605:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2611:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1169:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2617:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1176:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2623:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2630:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2637:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.h:2643:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1206:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/locale_facets.h:2651:0,
                 from /usr/include/c++/7/bits/basic_ios.h:37,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/locale_facets.tcc:41:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:49:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:76:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1255:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:145:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:370:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:592:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:688:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:44:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/basic_ios.h:45:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.h:66:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:703:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:735:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:750:3: error: template with C linkage
   template<typename _CharT, typename _InIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:777:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:792:3: error: template with C linkage
   template<typename _CharT, typename _ValueT>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:836:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:847:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:936:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:971:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1103:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_ios.h:516:0,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/basic_ios.tcc:39:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:51:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:61:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1155:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1169:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1176:3: error: template with C linkage
   template<typename _CharT, typename _OutIter>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1206:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:112:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:124:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:155:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/locale_facets.tcc:1255:3: error: template with C linkage
   template<typename _CharT>
   ^~~~~~~~
In file included from /usr/include/c++/7/iterator:64:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/ostream:57:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:425:3: error: template with C linkage
   template <typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:495:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:500:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:506:3: error: template with C linkage
   template <class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:512:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:517:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:537:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:549:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:554:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:567:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:572:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:588:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:600:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:610:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:616:3: error: template with C linkage
   template<typename _Ch, typename _Up>
   ^~~~~~~~
/usr/include/c++/7/ostream:620:3: error: template with C linkage
   template<typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/ostream:626:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ostream:631:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ostream:640:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/ios:44:0,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/basic_ios.h:45:3: error: template with C linkage
   template<typename _Facet>
   ^~~~~~~~
/usr/include/c++/7/ostream:650:3: error: template with C linkage
   template<typename _Ostream, typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.h:66:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:653:3: error: template with C linkage
   template<typename _Ostream, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ostream:659:3: error: template with C linkage
   template<typename _Ostream>
   ^~~~~~~~
/usr/include/c++/7/ostream:674:3: error: template with C linkage
   template<typename _Ostream, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/ostream:693:0,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/ostream.tcc:45:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:60:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:89:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:103:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:117:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:146:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:180:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:208:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:234:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:255:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:287:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:319:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/basic_ios.h:516:0,
                 from /usr/include/c++/7/ios:44,
                 from /usr/include/c++/7/ostream:38,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/basic_ios.tcc:39:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:51:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:61:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:112:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:124:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/basic_ios.tcc:155:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/iterator:64:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/ostream:57:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/iterator:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/istream:57:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:425:3: error: template with C linkage
   template <typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:495:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:500:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:506:3: error: template with C linkage
   template <class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:512:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:517:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:537:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:549:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:554:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:567:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:572:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:588:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:600:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:610:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/ostream:616:3: error: template with C linkage
   template<typename _Ch, typename _Up>
   ^~~~~~~~
/usr/include/c++/7/ostream:620:3: error: template with C linkage
   template<typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/ostream:626:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ostream:631:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ostream:640:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:645:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/ostream:650:3: error: template with C linkage
   template<typename _Ostream, typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/ostream:653:3: error: template with C linkage
   template<typename _Ostream, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ostream:659:3: error: template with C linkage
   template<typename _Ostream>
   ^~~~~~~~
/usr/include/c++/7/ostream:674:3: error: template with C linkage
   template<typename _Ostream, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/ostream:693:0,
                 from /usr/include/c++/7/iterator:64,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/ostream.tcc:45:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:60:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:89:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:650:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:655:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:661:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:103:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:117:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:146:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:180:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:666:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:208:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:671:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:685:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:234:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:750:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:255:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:754:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:759:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:792:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:287:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:797:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/ostream.tcc:319:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:801:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:806:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:823:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:906:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:911:3: error: template with C linkage
   template<typename _Ch, typename _Up>
   ^~~~~~~~
/usr/include/c++/7/istream:915:3: error: template with C linkage
   template<typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/istream:921:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:926:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:935:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:945:3: error: template with C linkage
   template<typename _Istream, typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/istream:948:3: error: template with C linkage
   template<typename _Istream, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:954:3: error: template with C linkage
   template<typename _Istream>
   ^~~~~~~~
/usr/include/c++/7/istream:972:3: error: template with C linkage
   template<typename _Istream, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/istream:991:0,
                 from /usr/include/c++/7/iterator:65,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/istream.tcc:45:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:91:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:119:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:164:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:209:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:241:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:277:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:314:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:361:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:405:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:465:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/iterator:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/istream:57:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:498:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:560:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:625:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:655:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:684:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:716:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:751:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:786:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:822:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:850:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:889:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:929:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:961:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:1022:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:645:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:650:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:655:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:661:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:666:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:671:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:685:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:750:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:754:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:759:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:792:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:797:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/istream:801:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:806:3: error: template with C linkage
   template<class _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:823:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:906:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/istream:911:3: error: template with C linkage
   template<typename _Ch, typename _Up>
   ^~~~~~~~
/usr/include/c++/7/istream:915:3: error: template with C linkage
   template<typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/istream:921:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:926:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:935:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:945:3: error: template with C linkage
   template<typename _Istream, typename _Tp, typename = void>
   ^~~~~~~~
/usr/include/c++/7/istream:948:3: error: template with C linkage
   template<typename _Istream, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/istream:954:3: error: template with C linkage
   template<typename _Istream>
   ^~~~~~~~
/usr/include/c++/7/istream:972:3: error: template with C linkage
   template<typename _Istream, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/istream:991:0,
                 from /usr/include/c++/7/iterator:65,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/istream.tcc:45:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:91:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:119:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/iterator:66:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stream_iterator.h:47:3: error: template with C linkage
   template<typename _Tp, typename _CharT = char,
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:164:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stream_iterator.h:128:3: error: template with C linkage
   template<typename _Tp, typename _CharT, typename _Traits, typename _Dist>
   ^~~~~~~~
/usr/include/c++/7/bits/stream_iterator.h:135:3: error: template with C linkage
   template <class _Tp, class _CharT, class _Traits, class _Dist>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:209:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stream_iterator.h:152:3: error: template with C linkage
   template<typename _Tp, typename _CharT = char,
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:241:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:63:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/allocated_ptr.h:45:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:277:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:314:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/allocated_ptr.h:100:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:361:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:64:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/ext/aligned_buffer.h:46:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ext/aligned_buffer.h:83:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:405:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
In file included from /usr/include/c++/7/list:63:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_list.h:108:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:465:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:127:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:498:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:206:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:560:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:625:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:285:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:291:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:299:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:655:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:684:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:716:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:751:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:786:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:822:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:850:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:502:3: error: template with C linkage
   template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:889:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:929:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:961:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/istream.tcc:1022:3: error: template with C linkage
   template<typename _CharT, typename _Traits>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1882:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1916:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1923:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1929:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1935:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1941:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1947:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1959:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1969:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/c++/7/list:64:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/list.tcc:63:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:85:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:98:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:114:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:129:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:147:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:172:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/iterator:66:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stream_iterator.h:47:3: error: template with C linkage
   template<typename _Tp, typename _CharT = char,
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:208:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:227:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:239:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:264:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stream_iterator.h:128:3: error: template with C linkage
   template<typename _Tp, typename _CharT, typename _Traits, typename _Dist>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:290:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stream_iterator.h:135:3: error: template with C linkage
   template <class _Tp, class _CharT, class _Traits, class _Dist>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:304:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stream_iterator.h:152:3: error: template with C linkage
   template<typename _Tp, typename _CharT = char,
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:322:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:350:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:63:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/allocated_ptr.h:45:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:370:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:416:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/allocated_ptr.h:100:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:464:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_list.h:64:0,
                 from /usr/include/c++/7/list:63,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/ext/aligned_buffer.h:46:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/ext/aligned_buffer.h:83:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:510:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:528:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:549:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/list:63:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_list.h:108:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:127:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:69:1: error: template with C linkage
 template <typename T> class QVector;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:70:1: error: template with C linkage
 template <typename T> class QSet;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:72:1: error: template with C linkage
 template <typename T> struct QListSpecialMethods
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:77:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QByteArray>;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:78:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QString>;
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:206:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:120:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:285:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:291:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:299:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:502:3: error: template with C linkage
   template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:432:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:448:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:455:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:490:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:499:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1882:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:508:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1916:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1923:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:527:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1929:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1935:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:539:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1941:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1947:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:543:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1959:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:547:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_list.h:1969:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:551:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:555:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/c++/7/list:64:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:50,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/list.tcc:63:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:560:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:85:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:563:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:567:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:98:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:578:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:114:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:129:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:612:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:147:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:172:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:646:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:208:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:227:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:680:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:239:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:688:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:264:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:697:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:290:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:706:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:304:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h: In member function ‘QList<T> QList<T>::mid(int, int) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:710:13: error: ‘QContainerImplHelper’ has not been declared
     switch (QContainerImplHelper::mid(size(), &pos, &alength)) {
             ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:711:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Null:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:712:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Empty:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:714:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Full:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/list.tcc:322:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:716:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Subset:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:737:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:350:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:746:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:370:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:752:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:416:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:782:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:799:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:464:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:805:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:823:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:830:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:510:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:840:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:528:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:853:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/list.tcc:549:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:862:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:871:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:877:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:69:1: error: template with C linkage
 template <typename T> class QVector;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:70:1: error: template with C linkage
 template <typename T> class QSet;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:903:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:72:1: error: template with C linkage
 template <typename T> struct QListSpecialMethods
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:77:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QByteArray>;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:78:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QString>;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:914:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:938:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:961:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:967:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:120:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:982:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1000:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1006:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1017:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1025:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1031:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1043:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:44:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1051:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_ITERATOR(List)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1052:1: error: template with C linkage
 Q_DECLARE_MUTABLE_SEQUENTIAL_ITERATOR(List)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1054:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1061:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1070:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1077:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1084:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:64:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QByteArray>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h: In member function ‘QByteArray QListSpecialMethods<QByteArray>::join() const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:73:5: error: return type ‘class QByteArray’ is incomplete
     { return QtPrivate::QByteArrayList_join(self(), Q_NULLPTR, 0); }
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:73:65: error: invalid use of incomplete type ‘class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), Q_NULLPTR, 0); }
                                                                 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h: In member function ‘QByteArray QListSpecialMethods<QByteArray>::join(const QByteArray&) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:5: error: return type ‘class QByteArray’ is incomplete
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:53: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                     ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:53: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                     ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:70: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                                      ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:70: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                                      ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h: In member function ‘QByteArray QListSpecialMethods<QByteArray>::join(char) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:77:5: error: return type ‘class QByteArray’ is incomplete
     { return QtPrivate::QByteArrayList_join(self(), &sep, 1); }
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:77:60: error: invalid use of incomplete type ‘class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), &sep, 1); }
                                                            ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: note: previous declaration ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: note: previous declaration ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: previous declaration ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:432:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:448:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:455:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:490:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:499:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:508:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:527:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:539:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:543:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:547:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:551:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:555:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:560:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:563:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:567:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:578:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:612:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:646:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:680:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:688:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:697:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:706:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h: In member function ‘QList<T> QList<T>::mid(int, int) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:710:13: error: ‘QContainerImplHelper’ has not been declared
     switch (QContainerImplHelper::mid(size(), &pos, &alength)) {
             ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:711:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Null:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:712:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Empty:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:714:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Full:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:716:10: error: ‘QContainerImplHelper’ has not been declared
     case QContainerImplHelper::Subset:
          ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:737:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:746:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:752:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:782:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:799:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:805:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:823:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:830:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:840:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:853:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:862:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:871:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:121:1: error: template specialization with C linkage
 Q_DECLARE_TYPEINFO(QRegExp, Q_MOVABLE_TYPE);
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:877:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:903:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:914:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:129:22: error: conflicting declaration of C function ‘QDebug operator<<(QDebug, const QRegExp&)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QRegExp &);
                      ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:124:28: note: previous declaration ‘QDataStream& operator<<(QDataStream&, const QRegExp&)’
 Q_CORE_EXPORT QDataStream &operator<<(QDataStream &out, const QRegExp &regExp);
                            ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:938:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringmatcher.h:73:13: error: field ‘q_pattern’ has incomplete type ‘QString’
     QString q_pattern;
             ^~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:961:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:967:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:64:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QString>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:982:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1000:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1006:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1017:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1025:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1031:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1043:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:44:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1051:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_ITERATOR(List)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1052:1: error: template with C linkage
 Q_DECLARE_MUTABLE_SEQUENTIAL_ITERATOR(List)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1054:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1061:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1070:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1077:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1084:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:64:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QByteArray>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h: In member function ‘QByteArray QListSpecialMethods<QByteArray>::join() const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:73:5: error: return type ‘class QByteArray’ is incomplete
     { return QtPrivate::QByteArrayList_join(self(), Q_NULLPTR, 0); }
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:73:65: error: invalid use of incomplete type ‘class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), Q_NULLPTR, 0); }
                                                                 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h: In member function ‘QByteArray QListSpecialMethods<QByteArray>::join(const QByteArray&) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:5: error: return type ‘class QByteArray’ is incomplete
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:53: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                     ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:53: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                     ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:70: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                                      ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:75:70: error: invalid use of incomplete type ‘const class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), sep.constData(), sep.size()); }
                                                                      ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1093:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h: In member function ‘QByteArray QListSpecialMethods<QByteArray>::join(char) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:77:5: error: return type ‘class QByteArray’ is incomplete
     { return QtPrivate::QByteArrayList_join(self(), &sep, 1); }
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearraylist.h:77:60: error: invalid use of incomplete type ‘class QByteArray’
     { return QtPrivate::QByteArrayList_join(self(), &sep, 1); }
                                                            ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:151:1: error: template specialization with C linkage
 Q_DECLARE_TYPEINFO(QStringList, Q_MOVABLE_TYPE);
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:163:27: error: conflicting declaration of C function ‘QString QtPrivate::QStringList_join(const QStringList&, QLatin1String)’
     Q_CORE_EXPORT QString QStringList_join(const QStringList &list, QLatin1String sep);
                           ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:162:27: note: previous declaration ‘QString QtPrivate::QStringList_join(const QStringList*, const QChar*, int)’
     QString Q_CORE_EXPORT QStringList_join(const QStringList *that, const QChar *sep, int seplen);
                           ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:172:24: error: conflicting declaration of C function ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegExp&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegExp &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:168:24: note: previous declaration ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QString&, const QString&, Qt::CaseSensitivity)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QString &before, const QString &after,
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:173:31: error: conflicting declaration of C function ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegExp&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegExp &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:164:31: note: previous declaration ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QString&, Qt::CaseSensitivity)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QString &str,
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:176:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_indexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:174:23: note: previous declaration ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:177:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:175:23: note: previous declaration ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:182:24: error: conflicting declaration of C function ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegularExpression&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegularExpression &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:172:24: note: previous declaration ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegExp&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegExp &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:182:24: error: conflicting declaration of C function ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegularExpression&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegularExpression &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:168:24: note: previous declaration ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QString&, const QString&, Qt::CaseSensitivity)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QString &before, const QString &after,
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:183:31: error: conflicting declaration of C function ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegularExpression&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegularExpression &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:173:31: note: previous declaration ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegExp&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegExp &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:183:31: error: conflicting declaration of C function ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegularExpression&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegularExpression &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:164:31: note: previous declaration ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QString&, Qt::CaseSensitivity)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QString &str,
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:184:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:176:23: note: previous declaration ‘int QtPrivate::QStringList_indexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:184:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:174:23: note: previous declaration ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:185:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:177:23: note: previous declaration ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:185:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:175:23: note: previous declaration ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:101:41: note: previous declaration ‘uint qHash(QLatin1String, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(QLatin1String key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:100:41: note: previous declaration ‘uint qHash(const QBitArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QBitArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: previous declaration ‘uint qHash(const QStringRef&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h: In member function ‘QString QListSpecialMethods<QString>::join(const QString&) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:200:71: error: return type ‘class QString’ is incomplete
 inline QString QListSpecialMethods<QString>::join(const QString &sep) const
                                                                       ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:98:41: note: previous declaration ‘uint qHash(const QString&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:48: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:97:41: note: previous declaration ‘uint qHash(const QByteArray&, uint)’
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
                                         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:48: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:96:52: note: previous declaration ‘constexpr uint qHash(QChar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:65: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                                 ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:94:42: note: previous declaration ‘uint qHash(long double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:65: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                                 ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:92:42: note: previous declaration ‘uint qHash(double, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h: In member function ‘QString QListSpecialMethods<QString>::join(QLatin1String) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:205:58: error: ‘sep’ has incomplete type
 QString QListSpecialMethods<QString>::join(QLatin1String sep) const
                                                          ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:91:42: note: previous declaration ‘uint qHash(float, uint)’
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(float key, uint seed = 0) Q_DECL_NOTHROW;
                                          ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:65:7: note: forward declaration of ‘class QLatin1String’
 class QLatin1String;
       ^~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:205:63: error: return type ‘class QString’ is incomplete
 QString QListSpecialMethods<QString>::join(QLatin1String sep) const
                                                               ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:90:52: note: previous declaration ‘constexpr uint qHash(qint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(qint64 key, uint seed = 0) Q_DECL_NOTHROW { return qHash(quint64(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:86:52: note: previous declaration ‘constexpr uint qHash(quint64, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(quint64 key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h: In member function ‘QString QListSpecialMethods<QString>::join(QChar) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:210:62: error: return type ‘class QString’ is incomplete
 inline QString QListSpecialMethods<QString>::join(QChar sep) const
                                                              ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:85:52: note: previous declaration ‘constexpr uint qHash(long int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(long key, uint seed = 0) Q_DECL_NOTHROW { return qHash(ulong(key), seed); }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:212:55: error: invalid use of incomplete type ‘class QString’
     return QtPrivate::QStringList_join(self(), &sep, 1);
                                                       ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:79:52: note: previous declaration ‘constexpr uint qHash(ulong, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ulong key, uint seed = 0) Q_DECL_NOTHROW
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:78:52: note: previous declaration ‘constexpr uint qHash(int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(int key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:77:52: note: previous declaration ‘constexpr uint qHash(uint, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uint key, uint seed = 0) Q_DECL_NOTHROW { return key ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:76:52: note: previous declaration ‘constexpr uint qHash(short int, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(short key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:75:52: note: previous declaration ‘constexpr uint qHash(ushort, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(ushort key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:74:52: note: previous declaration ‘constexpr uint qHash(signed char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(signed char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:73:52: note: previous declaration ‘constexpr uint qHash(uchar, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(uchar key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:56:20: error: conflicting declaration of C function ‘uint qHash(const QRegExp&, uint)’
 Q_CORE_EXPORT uint qHash(const QRegExp &key, uint seed = 0) Q_DECL_NOTHROW;
                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:72:52: note: previous declaration ‘constexpr uint qHash(char, uint)’
 Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(char key, uint seed = 0) Q_DECL_NOTHROW { return uint(key) ^ seed; }
                                                    ^~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:48:1: error: template with C linkage
 template <class Key, class T> class QCache;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:49:1: error: template with C linkage
 template <class Key, class T> class QHash;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:50:1: error: template with C linkage
 template <class T> class QLinkedList;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:51:1: error: template with C linkage
 template <class T> class QList;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:52:1: error: template with C linkage
 template <class Key, class T> class QMap;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:53:1: error: template with C linkage
 template <class Key, class T> class QMultiHash;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:54:1: error: template with C linkage
 template <class Key, class T> class QMultiMap;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:55:1: error: template with C linkage
 template <class T1, class T2> struct QPair;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:56:1: error: template with C linkage
 template <class T> class QQueue;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:57:1: error: template with C linkage
 template <class T> class QSet;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:58:1: error: template with C linkage
 template <class T> class QStack;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:59:1: error: template with C linkage
 template<class T, int Prealloc = 256> class QVarLengthArray;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:60:1: error: template with C linkage
 template <class T> class QVector;
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:59:1: error: template with C linkage
 template<class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:63:1: error: template with C linkage
 template<class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:257:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:277:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:281:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:121:1: error: template specialization with C linkage
 Q_DECLARE_TYPEINFO(QRegExp, Q_MOVABLE_TYPE);
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:285:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:300:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:318:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:129:22: error: conflicting declaration of C function ‘QDebug operator<<(QDebug, const QRegExp&)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QRegExp &);
                      ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:124:28: note: previous declaration ‘QDataStream& operator<<(QDataStream&, const QRegExp&)’
 Q_CORE_EXPORT QDataStream &operator<<(QDataStream &out, const QRegExp &regExp);
                            ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:330:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:352:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:356:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:49:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringmatcher.h:73:13: error: field ‘q_pattern’ has incomplete type ‘QString’
     QString q_pattern;
             ^~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:64:1: error: template specialization with C linkage
 template <> struct QListSpecialMethods<QString>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:418:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:426:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:432:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:436:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:440:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:444:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:448:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:452:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:461:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:490:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:514:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:525:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:531:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:540:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:547:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:554:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
In file included from /usr/include/c++/7/vector:63:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_uninitialized.h:71:3: error: template with C linkage
   template<bool _TrivialValueTypes>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:94:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:113:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:138:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:160:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:179:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:198:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:221:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:242:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:264:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:151:1: error: template specialization with C linkage
 Q_DECLARE_TYPEINFO(QStringList, Q_MOVABLE_TYPE);
 ^
/usr/include/c++/7/bits/stl_uninitialized.h:285:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:291:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:302:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:315:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp, typename _Allocator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:334:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp, typename _Tp2>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:340:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:163:27: error: conflicting declaration of C function ‘QString QtPrivate::QStringList_join(const QStringList&, QLatin1String)’
     Q_CORE_EXPORT QString QStringList_join(const QStringList &list, QLatin1String sep);
                           ^~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:162:27: note: previous declaration ‘QString QtPrivate::QStringList_join(const QStringList*, const QChar*, int)’
     QString Q_CORE_EXPORT QStringList_join(const QStringList *that, const QChar *sep, int seplen);
                           ^~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:361:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:378:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:172:24: error: conflicting declaration of C function ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegExp&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegExp &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:168:24: note: previous declaration ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QString&, const QString&, Qt::CaseSensitivity)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QString &before, const QString &after,
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:406:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:173:31: error: conflicting declaration of C function ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegExp&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegExp &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:164:31: note: previous declaration ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QString&, Qt::CaseSensitivity)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QString &str,
                               ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:433:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp, typename _InputIterator,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:176:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_indexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:174:23: note: previous declaration ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:177:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:455:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator, typename _Tp,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:175:23: note: previous declaration ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:182:24: error: conflicting declaration of C function ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegularExpression&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegularExpression &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:172:24: note: previous declaration ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegExp&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegExp &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:182:24: error: conflicting declaration of C function ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QRegularExpression&, const QString&)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QRegularExpression &rx, const QString &after);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:481:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:168:24: note: previous declaration ‘void QtPrivate::QStringList_replaceInStrings(QStringList*, const QString&, const QString&, Qt::CaseSensitivity)’
     void Q_CORE_EXPORT QStringList_replaceInStrings(QStringList *that, const QString &before, const QString &after,
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:183:31: error: conflicting declaration of C function ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegularExpression&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegularExpression &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:173:31: note: previous declaration ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegExp&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegExp &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:183:31: error: conflicting declaration of C function ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QRegularExpression&)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QRegularExpression &re);
                               ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:164:31: note: previous declaration ‘QStringList QtPrivate::QStringList_filter(const QStringList*, const QString&, Qt::CaseSensitivity)’
     QStringList Q_CORE_EXPORT QStringList_filter(const QStringList *that, const QString &str,
                               ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:502:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:184:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:176:23: note: previous declaration ‘int QtPrivate::QStringList_indexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:184:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:174:23: note: previous declaration ‘int QtPrivate::QStringList_indexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_indexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:516:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:185:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:177:23: note: previous declaration ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:185:23: error: conflicting declaration of C function ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegularExpression&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegularExpression &re, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:175:23: note: previous declaration ‘int QtPrivate::QStringList_lastIndexOf(const QStringList*, const QRegExp&, int)’
     int Q_CORE_EXPORT QStringList_lastIndexOf(const QStringList *that, const QRegExp &rx, int from);
                       ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:538:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:555:3: error: template with C linkage
   template<typename _ForwardIterator>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h: In member function ‘QString QListSpecialMethods<QString>::join(const QString&) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:200:71: error: return type ‘class QString’ is incomplete
 inline QString QListSpecialMethods<QString>::join(const QString &sep) const
                                                                       ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:48: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                ^~~
/usr/include/c++/7/bits/stl_uninitialized.h:572:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:48: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:65: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                                 ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:590:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Allocator>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:202:65: error: invalid use of incomplete type ‘const class QString’
     return QtPrivate::QStringList_join(self(), sep.constData(), sep.length());
                                                                 ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h: In member function ‘QString QListSpecialMethods<QString>::join(QLatin1String) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:205:58: error: ‘sep’ has incomplete type
 QString QListSpecialMethods<QString>::join(QLatin1String sep) const
                                                          ^~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:65:7: note: forward declaration of ‘class QLatin1String’
 class QLatin1String;
       ^~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:610:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:205:63: error: return type ‘class QString’ is incomplete
 QString QListSpecialMethods<QString>::join(QLatin1String sep) const
                                                               ^~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:621:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Allocator>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h: In member function ‘QString QListSpecialMethods<QString>::join(QChar) const’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:210:62: error: return type ‘class QString’ is incomplete
 inline QString QListSpecialMethods<QString>::join(QChar sep) const
                                                              ^~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:212:55: error: invalid use of incomplete type ‘class QString’
     return QtPrivate::QStringList_join(self(), &sep, 1);
                                                       ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:641:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:647:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:669:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:680:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:702:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:714:3: error: template with C linkage
   template<typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:729:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:741:3: error: template with C linkage
   template<typename _InputIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:761:3: error: template with C linkage
   template<typename _RandomAccessIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:769:3: error: template with C linkage
   template<typename _InputIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:789:3: error: template with C linkage
   template<typename _RandomAccessIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:810:3: error: template with C linkage
   template<typename _InputIterator, typename _Size, typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:817:3: error: template with C linkage
   template<typename _InputIterator, typename _Size, typename _ForwardIterator>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:53:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:49:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_vector.h:73:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:64:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:85:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:95:1: error: template with C linkage
 template <typename T, typename Cleanup = QScopedPointerDeleter<T> >
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:178:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:184:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:190:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:215:3: error: template with C linkage
   template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:196:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:202:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:208:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:214:1: error: template with C linkage
 template <class T, class Cleanup>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:220:5: error: template with C linkage
     template <typename X, typename Y> struct QScopedArrayEnsureSameType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:221:5: error: template with C linkage
     template <typename X> struct QScopedArrayEnsureSameType<X,X> { typedef X* Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:222:5: error: template with C linkage
     template <typename X> struct QScopedArrayEnsureSameType<const X, X> { typedef X* Type; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:225:1: error: template with C linkage
 template <typename T, typename Cleanup = QScopedPointerArrayDeleter<T> >
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:265:1: error: template with C linkage
 template <typename T, typename Cleanup>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:47,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:48:1: error: template with C linkage
 template <class Key, class T> class QCache;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:49:1: error: template with C linkage
 template <class Key, class T> class QHash;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:50:1: error: template with C linkage
 template <class T> class QLinkedList;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:51:1: error: template with C linkage
 template <class T> class QList;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:52:1: error: template with C linkage
 template <class Key, class T> class QMap;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:53:1: error: template with C linkage
 template <class Key, class T> class QMultiHash;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:54:1: error: template with C linkage
 template <class Key, class T> class QMultiMap;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:55:1: error: template with C linkage
 template <class T1, class T2> struct QPair;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:56:1: error: template with C linkage
 template <class T> class QQueue;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:57:1: error: template with C linkage
 template <class T> class QSet;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:58:1: error: template with C linkage
 template <class T> class QStack;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:59:1: error: template with C linkage
 template<class T, int Prealloc = 256> class QVarLengthArray;
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qcontainerfwd.h:60:1: error: template with C linkage
 template <class T> class QVector;
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:59:1: error: template with C linkage
 template<class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:63:1: error: template with C linkage
 template<class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:257:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:277:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:281:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:285:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:300:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:318:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:330:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:352:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:356:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1594:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1611:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1618:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1624:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:418:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1630:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1636:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:426:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1642:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:432:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:436:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:440:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:444:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:448:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:452:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:461:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:490:1: error: template with C linkage
 template <class T, int Prealloc>
 ^~~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_bvector.h: In function ‘void std::swap(std::_Bit_reference, bool&)’:
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h: In function ‘void std::swap(bool&, std::_Bit_reference)’:
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:514:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:525:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:531:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:540:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:547:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvarlengtharray.h:554:1: error: template with C linkage
 template <typename T, int Prealloc1, int Prealloc2>
 ^~~~~~~~
In file included from /usr/include/c++/7/vector:63:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_uninitialized.h:71:3: error: template with C linkage
   template<bool _TrivialValueTypes>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:94:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:113:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:138:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:160:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:179:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:198:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:221:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:242:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:264:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:285:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:291:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:302:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:315:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp, typename _Allocator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:334:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp, typename _Tp2>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:340:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:361:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:378:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:406:3: error: template with C linkage
   template<typename _InputIterator1, typename _InputIterator2,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:433:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp, typename _InputIterator,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:455:3: error: template with C linkage
   template<typename _InputIterator, typename _ForwardIterator, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:481:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:502:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:516:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:538:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:555:3: error: template with C linkage
   template<typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:572:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:590:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Allocator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:610:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:621:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Allocator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:641:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:647:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h: In function ‘std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)’:
/usr/include/c++/7/bits/stl_bvector.h:387:3: error: conflicting declaration of C function ‘std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)’
   operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:297:3: note: previous declaration ‘std::_Bit_iterator std::operator+(std::ptrdiff_t, const std::_Bit_iterator&)’
   operator+(ptrdiff_t __n, const _Bit_iterator& __x)
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:669:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:680:3: error: template with C linkage
   template<bool _TrivialValueType>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:702:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:714:3: error: template with C linkage
   template<typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:729:3: error: template with C linkage
   template<typename _ForwardIterator, typename _Size>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:741:3: error: template with C linkage
   template<typename _InputIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:761:3: error: template with C linkage
   template<typename _RandomAccessIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h: At global scope:
/usr/include/c++/7/bits/stl_bvector.h:410:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:769:3: error: template with C linkage
   template<typename _InputIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:789:3: error: template with C linkage
   template<typename _RandomAccessIterator, typename _Size,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:810:3: error: template with C linkage
   template<typename _InputIterator, typename _Size, typename _ForwardIterator>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_uninitialized.h:817:3: error: template with C linkage
   template<typename _InputIterator, typename _Size, typename _ForwardIterator>
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_vector.h:73:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:542:1: error: template with C linkage
 template<typename _Alloc>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:215:3: error: template with C linkage
   template<typename _Tp, typename _Alloc = std::allocator<_Tp> >
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1594:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1611:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1618:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1624:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1630:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1636:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_vector.h:1642:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:1281:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:69:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/vector.tcc:63:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:88:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_bvector.h: In function ‘void std::swap(std::_Bit_reference, bool&)’:
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/vector.tcc:112:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h: In function ‘void std::swap(bool&, std::_Bit_reference)’:
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/vector.tcc:151:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:163:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:177:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:235:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:257:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:275:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:311:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:332:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:361:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:391:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:456:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:552:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:602:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:613:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:627:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:711:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h: In function ‘std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)’:
/usr/include/c++/7/bits/stl_bvector.h:387:3: error: conflicting declaration of C function ‘std::_Bit_const_iterator std::operator+(std::ptrdiff_t, const std::_Bit_const_iterator&)’
   operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:297:3: note: previous declaration ‘std::_Bit_iterator std::operator+(std::ptrdiff_t, const std::_Bit_iterator&)’
   operator+(ptrdiff_t __n, const _Bit_iterator& __x)
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:725:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h: At global scope:
/usr/include/c++/7/bits/stl_bvector.h:410:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:756:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:791:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:819:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:830:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:841:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:867:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:542:1: error: template with C linkage
 template<typename _Alloc>
 ^~~~~~~~
In file included from /usr/include/c++/7/map:60:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_tree.h:141:3: error: template with C linkage
   template<typename _Key_compare>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:215:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:247:3: error: conflicting declaration of C function ‘const std::_Rb_tree_node_base* std::_Rb_tree_increment(const std::_Rb_tree_node_base*)’
   _Rb_tree_increment(const _Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:244:3: note: previous declaration ‘std::_Rb_tree_node_base* std::_Rb_tree_increment(std::_Rb_tree_node_base*)’
   _Rb_tree_increment(_Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:253:3: error: conflicting declaration of C function ‘const std::_Rb_tree_node_base* std::_Rb_tree_decrement(const std::_Rb_tree_node_base*)’
   _Rb_tree_decrement(const _Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:250:3: note: previous declaration ‘std::_Rb_tree_node_base* std::_Rb_tree_decrement(std::_Rb_tree_node_base*)’
   _Rb_tree_decrement(_Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:255:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:325:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:404:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:410:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:442:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:1281:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:69:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/vector.tcc:63:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:88:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:112:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:151:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:163:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:177:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:235:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1530:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:257:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1540:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1550:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:275:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1557:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1564:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1571:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1578:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:311:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1586:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:332:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1597:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:361:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1618:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1631:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:391:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1657:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:456:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1670:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1683:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1697:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:552:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1732:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1761:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:602:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:613:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1786:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:627:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1810:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KoV,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1847:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1863:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:711:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1879:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:725:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1895:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1911:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1927:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:756:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1959:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:791:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1991:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:819:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2022:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:830:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:841:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/vector.tcc:867:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/map:60:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_tree.h:141:3: error: template with C linkage
   template<typename _Key_compare>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:215:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:247:3: error: conflicting declaration of C function ‘const std::_Rb_tree_node_base* std::_Rb_tree_increment(const std::_Rb_tree_node_base*)’
   _Rb_tree_increment(const _Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:244:3: note: previous declaration ‘std::_Rb_tree_node_base* std::_Rb_tree_increment(std::_Rb_tree_node_base*)’
   _Rb_tree_increment(_Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:253:3: error: conflicting declaration of C function ‘const std::_Rb_tree_node_base* std::_Rb_tree_decrement(const std::_Rb_tree_node_base*)’
   _Rb_tree_decrement(const _Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:250:3: note: previous declaration ‘std::_Rb_tree_node_base* std::_Rb_tree_decrement(std::_Rb_tree_node_base*)’
   _Rb_tree_decrement(_Rb_tree_node_base* __x) throw ();
   ^~~~~~~~~~~~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:255:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:325:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:404:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:410:3: error: template with C linkage
   template<typename _Val>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:442:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2054:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2075:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2104:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2124:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2183:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2210:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2265:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2294:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2310:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2326:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2343:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2370:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2391:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2417:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2443:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KoV,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2455:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KoV,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2467:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2481:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2494:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2506:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2516:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2529:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2542:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1530:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1540:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2557:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1550:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1557:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1564:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1571:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1578:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/bits/stl_map.h:63,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/array:47:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1586:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:63:2: error: template with C linkage
  template<typename _Tp>
  ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1597:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:93:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1618:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1631:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1657:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1670:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1683:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1697:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:250:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1732:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:255:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:260:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:268:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1761:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:273:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:278:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1786:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:284:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1810:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KoV,
   ^~~~~~~~
/usr/include/c++/7/array:299:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:305:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:314:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1847:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:322:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1863:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:341:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/array:345:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:350:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1879:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/array:354:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:361:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1895:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
In file included from /usr/include/c++/7/tuple:40:0,
                 from /usr/include/c++/7/bits/stl_map.h:63,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/uses_allocator.h:41:3: error: template with C linkage
   template<typename _Alloc, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1911:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1927:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:51:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename = __void_t<>>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:55:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1959:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:62:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:74:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:77:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:80:3: error: template with C linkage
   template<bool, typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:83:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:1991:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:96:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:100:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2022:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:104:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:113:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:123:3: error: template with C linkage
   template<template<typename...> class _Predicate,
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:131:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:142:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:156:3: error: template with C linkage
   template<typename _Tp, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:161:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:169:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:174:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
In file included from /usr/include/c++/7/tuple:41:0,
                 from /usr/include/c++/7/bits/stl_map.h:63,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/invoke.h:52:3: error: template with C linkage
   template<typename _Tp, typename _Up = typename __inv_unwrap<_Tp>::type>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:57:3: error: template with C linkage
   template<typename _Res, typename _Fn, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:62:3: error: template with C linkage
   template<typename _Res, typename _MemFun, typename _Tp, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:68:3: error: template with C linkage
   template<typename _Res, typename _MemFun, typename _Tp, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:76:3: error: template with C linkage
   template<typename _Res, typename _MemPtr, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:81:3: error: template with C linkage
   template<typename _Res, typename _MemPtr, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:87:3: error: template with C linkage
   template<typename _Callable, typename... _Args>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_map.h:63:0,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/tuple:52:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:55:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/tuple:59:3: error: template with C linkage
   template<typename _El0, typename... _El>
   ^~~~~~~~
/usr/include/c++/7/tuple:63:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/tuple:68:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head,
   ^~~~~~~~
/usr/include/c++/7/tuple:72:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head>
   ^~~~~~~~
/usr/include/c++/7/tuple:119:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head>
   ^~~~~~~~
/usr/include/c++/7/tuple:176:3: error: template with C linkage
   template<std::size_t _Idx, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:184:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head, typename... _Tail>
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_bvector.h: In member function ‘void std::_Tuple_impl<_Idx, _Head, _Tail ...>::_M_swap(std::_Tuple_impl<_Idx, _Head, _Tail ...>&)’:
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_tree.h:2054:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
In file included from /usr/include/c++/7/bits/stl_map.h:63:0,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:342:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2075:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2104:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2124:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2183:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2210:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2265:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_bvector.h: In member function ‘void std::_Tuple_impl<_Idx, _Head>::_M_swap(std::_Tuple_impl<_Idx, _Head>&)’:
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_tree.h:2294:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_map.h:63:0,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:467:3: error: template with C linkage
   template<bool, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2310:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2326:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2343:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/tuple:515:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2370:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/tuple:555:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2391:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2417:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2443:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KoV,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2455:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KoV,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2467:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2481:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2494:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2506:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2516:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2529:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2542:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
/usr/include/c++/7/bits/stl_tree.h:2557:3: error: template with C linkage
   template<typename _Key, typename _Val, typename _KeyOfValue,
   ^~~~~~~~
In file included from /usr/include/c++/7/tuple:39:0,
                 from /usr/include/c++/7/bits/stl_map.h:63,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/array:47:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:63:2: error: template with C linkage
  template<typename _Tp>
  ^~~~~~~~
/usr/include/c++/7/array:93:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:250:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:255:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:260:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/tuple:889:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/array:268:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:273:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/tuple:906:3: error: template with C linkage
   template<typename _T1, typename _T2>
   ^~~~~~~~
/usr/include/c++/7/array:278:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:284:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:299:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:305:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:314:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:322:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:341:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/array:345:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:350:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/array:354:3: error: template with C linkage
   template<std::size_t _Int, typename _Tp, std::size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/array:361:3: error: template with C linkage
   template<typename _Tp, std::size_t _Nm>
   ^~~~~~~~
In file included from /usr/include/c++/7/tuple:40:0,
                 from /usr/include/c++/7/bits/stl_map.h:63,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/uses_allocator.h:41:3: error: template with C linkage
   template<typename _Alloc, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:51:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename = __void_t<>>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:55:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:62:3: error: template with C linkage
   template<typename _Tp, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:74:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:77:3: error: template with C linkage
   template<typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:80:3: error: template with C linkage
   template<bool, typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:83:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:96:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:100:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:104:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:113:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:123:3: error: template with C linkage
   template<template<typename...> class _Predicate,
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:131:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:142:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:156:3: error: template with C linkage
   template<typename _Tp, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:161:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:169:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/uses_allocator.h:174:3: error: template with C linkage
   template<typename _Tp, typename _Alloc, typename... _Args>
   ^~~~~~~~
In file included from /usr/include/c++/7/tuple:41:0,
                 from /usr/include/c++/7/bits/stl_map.h:63,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/invoke.h:52:3: error: template with C linkage
   template<typename _Tp, typename _Up = typename __inv_unwrap<_Tp>::type>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:57:3: error: template with C linkage
   template<typename _Res, typename _Fn, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:62:3: error: template with C linkage
   template<typename _Res, typename _MemFun, typename _Tp, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:68:3: error: template with C linkage
   template<typename _Res, typename _MemFun, typename _Tp, typename... _Args>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:76:3: error: template with C linkage
   template<typename _Res, typename _MemPtr, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:81:3: error: template with C linkage
   template<typename _Res, typename _MemPtr, typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/bits/invoke.h:87:3: error: template with C linkage
   template<typename _Callable, typename... _Args>
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_map.h:63:0,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/tuple:52:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:55:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/tuple:59:3: error: template with C linkage
   template<typename _El0, typename... _El>
   ^~~~~~~~
/usr/include/c++/7/tuple:63:3: error: template with C linkage
   template<typename _Tp>
   ^~~~~~~~
/usr/include/c++/7/tuple:68:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head,
   ^~~~~~~~
/usr/include/c++/7/tuple:1265:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:72:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head>
   ^~~~~~~~
/usr/include/c++/7/tuple:1278:3: error: template with C linkage
   template<std::size_t __i, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1285:3: error: template with C linkage
   template<typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1294:3: error: template with C linkage
   template<size_t __i>
   ^~~~~~~~
/usr/include/c++/7/tuple:1301:3: error: template with C linkage
   template<std::size_t __i, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1306:3: error: template with C linkage
   template<std::size_t __i, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:119:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head>
   ^~~~~~~~
/usr/include/c++/7/tuple:1312:3: error: template with C linkage
   template<std::size_t __i, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1318:3: error: template with C linkage
   template<std::size_t __i, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1324:3: error: template with C linkage
   template<std::size_t __i, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1366:3: error: template with C linkage
   template<typename _Tp, typename _Up, size_t __i, size_t __size>
   ^~~~~~~~
/usr/include/c++/7/tuple:176:3: error: template with C linkage
   template<std::size_t _Idx, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:184:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1385:3: error: template with C linkage
   template<typename _Tp, typename _Up, size_t __size>
   ^~~~~~~~
/usr/include/c++/7/tuple:1395:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1408:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1421:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1427:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1433:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1439:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1446:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1457:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1462:3: error: template with C linkage
   template<size_t, typename, typename, size_t>
   ^~~~~~~~
/usr/include/c++/7/tuple:1465:3: error: template with C linkage
   template<size_t _Idx, typename _Tuple, typename... _Tp, size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/tuple:1472:3: error: template with C linkage
   template<std::size_t _Nm, typename _Tuple, typename... _Tp>
   ^~~~~~~~
/usr/include/c++/7/tuple:1478:3: error: template with C linkage
   template<typename _Tuple>
   ^~~~~~~~
/usr/include/c++/7/tuple:1484:3: error: template with C linkage
   template<typename _Tuple>
   ^~~~~~~~
/usr/include/c++/7/tuple:1491:3: error: template with C linkage
   template<typename...>
   ^~~~~~~~
/usr/include/c++/7/tuple:1494:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/tuple:1500:3: error: template with C linkage
   template<typename... _Ts>
   ^~~~~~~~
/usr/include/c++/7/tuple:1506:3: error: template with C linkage
   template<typename... _T1s, typename... _T2s, typename... _Rem>
   ^~~~~~~~
/usr/include/c++/7/tuple:1514:3: error: template with C linkage
   template<typename... _Tpls>
   ^~~~~~~~
/usr/include/c++/7/tuple:1523:3: error: template with C linkage
   template<typename...>
   ^~~~~~~~
/usr/include/c++/7/tuple:1526:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/tuple:1532:3: error: template with C linkage
   template<typename _Tp, typename... _Tpls>
   ^~~~~~~~
/usr/include/c++/7/tuple:1542:3: error: template with C linkage
   template<typename _Ret, typename _Indices, typename... _Tpls>
   ^~~~~~~~
/usr/include/c++/7/tuple:1545:3: error: template with C linkage
   template<typename _Ret, std::size_t... _Is, typename _Tp, typename... _Tpls>
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_bvector.h: In member function ‘void std::_Tuple_impl<_Idx, _Head, _Tail ...>::_M_swap(std::_Tuple_impl<_Idx, _Head, _Tail ...>&)’:
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/tuple:1560:3: error: template with C linkage
   template<typename _Ret>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/tuple:1572:3: error: template with C linkage
   template<typename... _Tpls, typename = typename
   ^~~~~~~~
In file included from /usr/include/c++/7/bits/stl_map.h:63:0,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:342:3: error: template with C linkage
   template<std::size_t _Idx, typename _Head>
   ^~~~~~~~
/usr/include/c++/7/tuple:1587:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1593:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1607:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1618:5: error: template with C linkage
     template<class _Tp>
     ^~~~~~~~
/usr/include/c++/7/tuple:1629:3: error: template with C linkage
   template<typename... _Types, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/tuple:1633:3: error: template with C linkage
   template<class _T1, class _T2>
   ^~~~~~~~
/usr/include/c++/7/tuple:1644:3: error: template with C linkage
   template<class _T1, class _T2>
   ^~~~~~~~
In file included from /usr/include/c++/7/map:61:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_map.h:70:3: error: template with C linkage
   template <typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:97:3: error: template with C linkage
   template <typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
   ^~~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_bvector.h: In member function ‘void std::_Tuple_impl<_Idx, _Head>::_M_swap(std::_Tuple_impl<_Idx, _Head>&)’:
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
In file included from /usr/include/c++/7/bits/stl_map.h:63:0,
                 from /usr/include/c++/7/map:61,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/tuple: At global scope:
/usr/include/c++/7/tuple:467:3: error: template with C linkage
   template<bool, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:515:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:555:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1393:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1410:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1417:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1424:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1431:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1438:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1445:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/map:62:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/bits/stl_multimap.h:68:3: error: template with C linkage
   template <typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:95:3: error: template with C linkage
   template <typename _Key, typename _Tp,
   ^~~~~~~~
/usr/include/c++/7/tuple:889:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/tuple:906:3: error: template with C linkage
   template<typename _T1, typename _T2>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1059:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1076:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1083:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1090:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1097:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1104:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1111:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:63:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:66:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:226:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:244:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/tuple:1265:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1278:3: error: template with C linkage
   template<std::size_t __i, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1285:3: error: template with C linkage
   template<typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:275:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/tuple:1294:3: error: template with C linkage
   template<size_t __i>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:300:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/tuple:1301:3: error: template with C linkage
   template<std::size_t __i, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1306:3: error: template with C linkage
   template<std::size_t __i, typename _Head, typename... _Tail>
   ^~~~~~~~
/usr/include/c++/7/tuple:1312:3: error: template with C linkage
   template<std::size_t __i, typename... _Elements>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:327:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/c++/7/tuple:1318:3: error: template with C linkage
   template<std::size_t __i, typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1324:3: error: template with C linkage
   template<std::size_t __i, typename... _Elements>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:347:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/c++/7/tuple:1366:3: error: template with C linkage
   template<typename _Tp, typename _Up, size_t __i, size_t __size>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:370:1: error: template with C linkage
 template<typename From, typename To, typename UnaryFunction>
 ^~~~~~~~
/usr/include/c++/7/tuple:1385:3: error: template with C linkage
   template<typename _Tp, typename _Up, size_t __size>
   ^~~~~~~~
/usr/include/c++/7/tuple:1395:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:390:5: error: template with C linkage
     template<typename T, bool>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:392:5: error: template with C linkage
     template<typename T, bool>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:394:5: error: template with C linkage
     template<typename T, bool>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:396:5: error: template with C linkage
     template<typename, typename>
     ^~~~~~~~
/usr/include/c++/7/tuple:1408:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1421:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1427:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1433:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1439:3: error: template with C linkage
   template<typename... _TElements, typename... _UElements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1446:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1457:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1462:3: error: template with C linkage
   template<size_t, typename, typename, size_t>
   ^~~~~~~~
/usr/include/c++/7/tuple:1465:3: error: template with C linkage
   template<size_t _Idx, typename _Tuple, typename... _Tp, size_t _Nm>
   ^~~~~~~~
/usr/include/c++/7/tuple:1472:3: error: template with C linkage
   template<std::size_t _Nm, typename _Tuple, typename... _Tp>
   ^~~~~~~~
/usr/include/c++/7/tuple:1478:3: error: template with C linkage
   template<typename _Tuple>
   ^~~~~~~~
/usr/include/c++/7/tuple:1484:3: error: template with C linkage
   template<typename _Tuple>
   ^~~~~~~~
/usr/include/c++/7/tuple:1491:3: error: template with C linkage
   template<typename...>
   ^~~~~~~~
/usr/include/c++/7/tuple:1494:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/c++/7/tuple:1500:3: error: template with C linkage
   template<typename... _Ts>
   ^~~~~~~~
/usr/include/c++/7/tuple:1506:3: error: template with C linkage
   template<typename... _T1s, typename... _T2s, typename... _Rem>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:544:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:554:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/c++/7/tuple:1514:3: error: template with C linkage
   template<typename... _Tpls>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:564:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/c++/7/tuple:1523:3: error: template with C linkage
   template<typename...>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:573:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/c++/7/tuple:1526:3: error: template specialization with C linkage
   template<>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:583:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/c++/7/tuple:1532:3: error: template with C linkage
   template<typename _Tp, typename... _Tpls>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:592:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:607:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/c++/7/tuple:1542:3: error: template with C linkage
   template<typename _Ret, typename _Indices, typename... _Tpls>
   ^~~~~~~~
/usr/include/c++/7/tuple:1545:3: error: template with C linkage
   template<typename _Ret, std::size_t... _Is, typename _Tp, typename... _Tpls>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:620:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:633:5: error: template with C linkage
     template<typename From, typename To, typename UnaryFunction>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:651:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/c++/7/tuple:1560:3: error: template with C linkage
   template<typename _Ret>
   ^~~~~~~~
/usr/include/c++/7/tuple:1572:3: error: template with C linkage
   template<typename... _Tpls, typename = typename
   ^~~~~~~~
/usr/include/c++/7/tuple:1587:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/c++/7/tuple:1593:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:695:5: error: template with C linkage
     template<typename, bool> friend struct QtPrivate::ValueTypeIsMetaType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:696:5: error: template with C linkage
     template<typename, typename> friend struct QtPrivate::ConverterMemberFunction;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:697:5: error: template with C linkage
     template<typename, typename> friend struct QtPrivate::ConverterMemberFunctionOk;
     ^~~~~~~~
/usr/include/c++/7/tuple:1607:3: error: template with C linkage
   template<typename... _Elements>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:698:5: error: template with C linkage
     template<typename, typename, typename> friend struct QtPrivate::ConverterFunctor;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:699:5: error: template with C linkage
     template<typename, bool> friend struct QtPrivate::AssociativeValueTypeIsMetaType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:700:5: error: template with C linkage
     template<typename, bool> friend struct QtPrivate::IsMetaTypePair;
     ^~~~~~~~
/usr/include/c++/7/tuple:1618:5: error: template with C linkage
     template<class _Tp>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:701:5: error: template with C linkage
     template<typename, typename> friend struct QtPrivate::MetaTypeSmartPointerHelper;
     ^~~~~~~~
/usr/include/c++/7/tuple:1629:3: error: template with C linkage
   template<typename... _Types, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/tuple:1633:3: error: template with C linkage
   template<class _T1, class _T2>
   ^~~~~~~~
/usr/include/c++/7/tuple:1644:3: error: template with C linkage
   template<class _T1, class _T2>
   ^~~~~~~~
In file included from /usr/include/c++/7/map:61:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_map.h:70:3: error: template with C linkage
   template <typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:97:3: error: template with C linkage
   template <typename _Key, typename _Tp, typename _Compare = std::less<_Key>,
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1156:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In function ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: error: conflicting declaration of C function ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: note: previous declaration ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>::enum_type)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In function ‘constexpr QIncompatibleFlag operator|(QFlags<QMetaType::TypeFlag>::enum_type, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: error: conflicting declaration of C function ‘constexpr QIncompatibleFlag operator|(QFlags<QMetaType::TypeFlag>::enum_type, int)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: note: previous declaration ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: error: conflicting declaration of C function ‘constexpr QIncompatibleFlag operator|(QFlags<QMetaType::TypeFlag>::enum_type, int)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: note: previous declaration ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>::enum_type)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:730:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:735:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:740:1: error: template with C linkage
 template<typename From, typename To, typename UnaryFunction>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:754:1: error: template with C linkage
 template <typename T, bool Accepted = true>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:781:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:790:1: error: template specialization with C linkage
 template <>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:815:1: error: template with C linkage
 template<typename const_iterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:844:1: error: template with C linkage
 template<typename const_iterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:864:1: error: template specialization with C linkage
 template<>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1393:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1410:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
make[2]: *** [src/core/CMakeFiles/doomseeker.dir/build.make:508: src/core/CMakeFiles/doomseeker.dir/cmdargshelp.cpp.o] Error 1
/usr/include/c++/7/bits/stl_map.h:1417:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1424:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1431:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1438:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_map.h:1445:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
In file included from /usr/include/c++/7/map:62:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:55,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/bits/stl_multimap.h:68:3: error: template with C linkage
   template <typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:95:3: error: template with C linkage
   template <typename _Key, typename _Tp,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:880:1: error: template with C linkage
 template<typename value_type>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:933:1: error: template with C linkage
 template<typename T, typename Category = typename std::iterator_traits<typename T::const_iterator>::iterator_category>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:936:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:939:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:942:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1059:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1076:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1083:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1090:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:946:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1097:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1104:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:952:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/c++/7/bits/stl_multimap.h:1111:3: error: template with C linkage
   template<typename _Key, typename _Tp, typename _Compare, typename _Alloc>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:956:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:960:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:63:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:66:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:964:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:226:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:995:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:999:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:244:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1007:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1011:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1015:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1020:5: error: template with C linkage
     template<class T> QSequentialIterableImpl(const T*p)
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:275:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:300:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:327:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:347:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1080:1: error: template specialization with C linkage
 QT_METATYPE_PRIVATE_DECLARE_TYPEINFO(QSequentialIterableImpl, Q_MOVABLE_TYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:370:1: error: template with C linkage
 template<typename From, typename To, typename UnaryFunction>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:390:5: error: template with C linkage
     template<typename T, bool>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:392:5: error: template with C linkage
     template<typename T, bool>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:394:5: error: template with C linkage
     template<typename T, bool>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:396:5: error: template with C linkage
     template<typename, typename>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1082:1: error: template with C linkage
 template<typename From>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1093:1: error: template with C linkage
 template<typename T, bool = std::is_same<typename T::const_iterator::value_type, typename T::mapped_type>::value>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1107:1: error: template with C linkage
 template<typename T, bool = std::is_same<typename T::const_iterator::value_type, std::pair<const typename T::key_type, typename T::mapped_type> >::value>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1110:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1124:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1158:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1163:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1168:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1172:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1176:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1180:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1184:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1189:5: error: template with C linkage
     template<class T> QAssociativeIterableImpl(const T*p)
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:544:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:554:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:564:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:573:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:583:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:592:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:607:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:620:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:633:5: error: template with C linkage
     template<typename From, typename To, typename UnaryFunction>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:651:5: error: template with C linkage
     template<typename From, typename To>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:695:5: error: template with C linkage
     template<typename, bool> friend struct QtPrivate::ValueTypeIsMetaType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:696:5: error: template with C linkage
     template<typename, typename> friend struct QtPrivate::ConverterMemberFunction;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:697:5: error: template with C linkage
     template<typename, typename> friend struct QtPrivate::ConverterMemberFunctionOk;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:698:5: error: template with C linkage
     template<typename, typename, typename> friend struct QtPrivate::ConverterFunctor;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:699:5: error: template with C linkage
     template<typename, bool> friend struct QtPrivate::AssociativeValueTypeIsMetaType;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:700:5: error: template with C linkage
     template<typename, bool> friend struct QtPrivate::IsMetaTypePair;
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:701:5: error: template with C linkage
     template<typename, typename> friend struct QtPrivate::MetaTypeSmartPointerHelper;
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1250:1: error: template specialization with C linkage
 QT_METATYPE_PRIVATE_DECLARE_TYPEINFO(QAssociativeIterableImpl, Q_MOVABLE_TYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1252:1: error: template with C linkage
 template<typename From>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1274:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1277:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1282:5: error: template with C linkage
     template<class T> QPairVariantInterfaceImpl(const T*p)
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1307:1: error: template specialization with C linkage
 QT_METATYPE_PRIVATE_DECLARE_TYPEINFO(QPairVariantInterfaceImpl, Q_MOVABLE_TYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1309:1: error: template with C linkage
 template<typename From>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1312:1: error: template with C linkage
 template<typename T, typename U>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1321:1: error: template with C linkage
 template<typename T, typename U>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1156:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In function ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: error: conflicting declaration of C function ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1338:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(QT_FORWARD_DECLARE_SHARED_POINTER_TYPES_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: note: previous declaration ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>::enum_type)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1338:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(QT_FORWARD_DECLARE_SHARED_POINTER_TYPES_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1338:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(QT_FORWARD_DECLARE_SHARED_POINTER_TYPES_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1342:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1349:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1354:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1359:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1365:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In function ‘constexpr QIncompatibleFlag operator|(QFlags<QMetaType::TypeFlag>::enum_type, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: error: conflicting declaration of C function ‘constexpr QIncompatibleFlag operator|(QFlags<QMetaType::TypeFlag>::enum_type, int)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: note: previous declaration ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: error: conflicting declaration of C function ‘constexpr QIncompatibleFlag operator|(QFlags<QMetaType::TypeFlag>::enum_type, int)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:726:1: note: previous declaration ‘constexpr QFlags<QMetaType::TypeFlag> operator|(QFlags<QMetaType::TypeFlag>::enum_type, QFlags<QMetaType::TypeFlag>::enum_type)’
 Q_DECLARE_OPERATORS_FOR_FLAGS(QMetaType::TypeFlags)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1379:5: error: template with C linkage
     template<typename T, typename Enable = void>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:730:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1382:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:735:1: error: template with C linkage
 template<typename From, typename To>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:740:1: error: template with C linkage
 template<typename From, typename To, typename UnaryFunction>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1392:5: error: template with C linkage
     template<typename T> char qt_getEnumMetaObject(const T&);
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1394:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:754:1: error: template with C linkage
 template <typename T, bool Accepted = true>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1403:5: error: template specialization with C linkage
     template<> struct IsQEnumHelper<void> { enum { Value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1405:5: error: template with C linkage
     template<typename T, typename Enable = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1410:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:781:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1415:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1420:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:790:1: error: template specialization with C linkage
 template <>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1425:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1431:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1437:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1442:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1448:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1453:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1459:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:815:1: error: template with C linkage
 template<typename const_iterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1465:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1471:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1477:5: error: template with C linkage
     template<typename T, bool = QtPrivate::IsSequentialContainer<T>::Value>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1486:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::value_type>::Defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1495:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:844:1: error: template with C linkage
 template<typename const_iterator>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1500:5: error: template with C linkage
     template<typename T, bool = QtPrivate::IsAssociativeContainer<T>::Value>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1509:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::mapped_type>::Defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:864:1: error: template specialization with C linkage
 template<>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1518:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::key_type>::Defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1527:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1532:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1537:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::first_type>::Defined
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1547:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1553:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1561:5: error: template with C linkage
     template<typename T, typename U>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1563:5: error: template with C linkage
     template<typename T, typename U>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1566:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1569:5: error: template with C linkage
     template<typename T, typename = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1578:1: error: template with C linkage
 template <typename T, int =
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1589:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1594:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1601:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1604:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1608:5: error: template with C linkage
     template <typename T, bool Defined = QMetaTypeId2<T>::Defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1613:5: error: template with C linkage
     template <typename T> struct QMetaTypeIdHelper<T, false> {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1619:5: error: template with C linkage
     template <typename Result, typename... Args>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1622:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1637:5: error: template with C linkage
     template<typename T, bool defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1643:5: error: template with C linkage
     template<typename SmartPointer>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:880:1: error: template with C linkage
 template<typename value_type>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1652:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1662:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:933:1: error: template with C linkage
 template<typename T, typename Category = typename std::iterator_traits<typename T::const_iterator>::iterator_category>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:936:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:939:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1699:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:942:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1716:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1729:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1736:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1744:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1748:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:946:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1755:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:952:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeIdQObject<T*, 8>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1768:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:956:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:960:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1768:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:964:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1779:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1800:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:995:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:999:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1007:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeIdQObject<T, 16>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1814:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1011:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1015:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1814:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1020:5: error: template with C linkage
     template<class T> QSequentialIterableImpl(const T*p)
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1827:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1970:1: error: template with C linkage
 template<typename T, bool /* isSharedPointerToQObjectDerived */ = false>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QList<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1080:1: error: template specialization with C linkage
 QT_METATYPE_PRIVATE_DECLARE_TYPEINFO(QSequentialIterableImpl, Q_MOVABLE_TYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QVector<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1082:1: error: template with C linkage
 template<typename From>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1093:1: error: template with C linkage
 template<typename T, bool = std::is_same<typename T::const_iterator::value_type, typename T::mapped_type>::value>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1107:1: error: template with C linkage
 template<typename T, bool = std::is_same<typename T::const_iterator::value_type, std::pair<const typename T::key_type, typename T::mapped_type> >::value>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QQueue<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1110:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1124:1: error: template with C linkage
 template<typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1158:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1163:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1168:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1172:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1176:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1180:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1184:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1189:5: error: template with C linkage
     template<class T> QAssociativeIterableImpl(const T*p)
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QStack<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QSet<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QLinkedList<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1250:1: error: template specialization with C linkage
 QT_METATYPE_PRIVATE_DECLARE_TYPEINFO(QAssociativeIterableImpl, Q_MOVABLE_TYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1252:1: error: template with C linkage
 template<typename From>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::vector<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1274:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1277:5: error: template with C linkage
     template<class T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1282:5: error: template with C linkage
     template<class T> QPairVariantInterfaceImpl(const T*p)
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1152:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1307:1: error: template specialization with C linkage
 QT_METATYPE_PRIVATE_DECLARE_TYPEINFO(QPairVariantInterfaceImpl, Q_MOVABLE_TYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::__cxx11::list<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2058:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_FORWARD_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1309:1: error: template with C linkage
 template<typename From>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2058:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_FORWARD_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1312:1: error: template with C linkage
 template<typename T, typename U>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2058:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_FORWARD_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1321:1: error: template with C linkage
 template<typename T, typename U>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1338:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(QT_FORWARD_DECLARE_SHARED_POINTER_TYPES_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1338:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(QT_FORWARD_DECLARE_SHARED_POINTER_TYPES_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1338:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(QT_FORWARD_DECLARE_SHARED_POINTER_TYPES_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1342:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1349:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QHash<K, V> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1354:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1359:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1365:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1379:5: error: template with C linkage
     template<typename T, typename Enable = void>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1382:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1392:5: error: template with C linkage
     template<typename T> char qt_getEnumMetaObject(const T&);
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1394:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1403:5: error: template specialization with C linkage
     template<> struct IsQEnumHelper<void> { enum { Value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1405:5: error: template with C linkage
     template<typename T, typename Enable = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1410:5: error: template specialization with C linkage
     template<>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QMap<K, V> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1415:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1420:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1425:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1431:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1437:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1442:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1448:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1453:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1459:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1465:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1471:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1477:5: error: template with C linkage
     template<typename T, bool = QtPrivate::IsSequentialContainer<T>::Value>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::map<T, U> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1486:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::value_type>::Defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1495:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1500:5: error: template with C linkage
     template<typename T, bool = QtPrivate::IsAssociativeContainer<T>::Value>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1509:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::mapped_type>::Defined>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1518:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::key_type>::Defined>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1527:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1532:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: template with C linkage
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QPair<T1, T2> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: template with C linkage
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::pair<_T1, _T2> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QtPrivate::SharedPointerMetaTypeIdHelper<QSharedPointer<T>, true>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1537:5: error: template with C linkage
     template<typename T, bool = QMetaTypeId2<typename T::first_type>::Defined
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1547:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1553:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1561:5: error: template with C linkage
     template<typename T, typename U>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1563:5: error: template with C linkage
     template<typename T, typename U>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1566:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1569:5: error: template with C linkage
     template<typename T, typename = void>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QtPrivate::SharedPointerMetaTypeIdHelper<QWeakPointer<T>, true>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1578:1: error: template with C linkage
 template <typename T, int =
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1589:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1594:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1601:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1604:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1608:5: error: template with C linkage
     template <typename T, bool Defined = QMetaTypeId2<T>::Defined>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1613:5: error: template with C linkage
     template <typename T> struct QMetaTypeIdHelper<T, false> {
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1619:5: error: template with C linkage
     template <typename Result, typename... Args>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1622:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QtPrivate::SharedPointerMetaTypeIdHelper<QPointer<T>, true>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1637:5: error: template with C linkage
     template<typename T, bool defined>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1643:5: error: template with C linkage
     template<typename SmartPointer>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1652:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1662:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1699:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1716:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1729:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1736:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1744:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1748:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1755:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeIdQObject<T*, 8>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1768:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1768:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1779:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1800:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeIdQObject<T, 16>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1814:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1814:20: error: ‘typeName’ has incomplete type
         QByteArray typeName;
                    ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1827:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:1970:1: error: template with C linkage
 template<typename T, bool /* isSharedPointerToQObjectDerived */ = false>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QList<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QVector<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QQueue<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QStack<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QSet<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QLinkedList<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2044:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_1ARG(Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::vector<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2050:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::vector)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::__cxx11::list<T> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2051:1: error: template with C linkage
 Q_DECLARE_SEQUENTIAL_CONTAINER_METATYPE(std::list)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2058:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_FORWARD_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2058:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_FORWARD_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2058:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_2ARG(Q_FORWARD_DECLARE_METATYPE_TEMPLATE_2ARG_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QHash<K, V> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2189:1: error: template specialization with C linkage
 Q_DECLARE_METATYPE(QtMetaTypePrivate::QSequentialIterableImpl)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2074:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QHash)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QMap<K, V> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2190:1: error: template specialization with C linkage
 Q_DECLARE_METATYPE(QtMetaTypePrivate::QAssociativeIterableImpl)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2075:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(QMap)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: template with C linkage
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2191:1: error: template specialization with C linkage
 Q_DECLARE_METATYPE(QtMetaTypePrivate::QPairVariantInterfaceImpl)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::map<T, U> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2076:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_ASSOCIATIVE_CONTAINER_METATYPE(std::map)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2195:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: template with C linkage
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2210:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<QPair<T1, T2> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2227:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2078:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(QPair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: template with C linkage
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:56:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:65:5: error: template with C linkage
     template <typename ArgList> struct TypesAreDeclaredMetaType { enum { Value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QMetaTypeId<std::pair<_T1, _T2> >::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:66:5: error: template specialization with C linkage
     template <> struct TypesAreDeclaredMetaType<List<>> { enum { Value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: there are no arguments to ‘qstrlen’ that depend on a template parameter, so a declaration of ‘qstrlen’ must be available [-fpermissive]
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:67:5: error: template with C linkage
     template <typename Arg, typename... Tail> struct TypesAreDeclaredMetaType<List<Arg, Tail...> >
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:70:5: error: template with C linkage
     template <typename ArgList, bool Declared = TypesAreDeclaredMetaType<ArgList>::Value > struct ConnectionTypes
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:72:5: error: template specialization with C linkage
     template <> struct ConnectionTypes<List<>, true>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:74:5: error: template with C linkage
     template <typename... Args> struct ConnectionTypes<List<Args...>, true>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2079:1: error: ‘typeName’ has incomplete type
 Q_DECLARE_METATYPE_TEMPLATE_2ARG(std::pair)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QtPrivate::SharedPointerMetaTypeIdHelper<QSharedPointer<T>, true>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:56:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:109:5: error: template with C linkage
     template<typename Func, typename Args, typename R> class QSlotObject : public QSlotObjectBase
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QtPrivate::SharedPointerMetaTypeIdHelper<QWeakPointer<T>, true>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:133:5: error: template with C linkage
     template<typename Func, typename Args, typename R> class QStaticSlotObject : public QSlotObjectBase
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:157:5: error: template with C linkage
     template<typename Func, int N, typename Args, typename R> class QFunctorSlotObject : public QSlotObjectBase
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/c++/7/chrono:38:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:59,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/ratio:55:3: error: template with C linkage
   template<intmax_t _Pn>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: In static member function ‘static int QtPrivate::SharedPointerMetaTypeIdHelper<QPointer<T>, true>::qt_metatype_id()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/c++/7/ratio:60:3: error: template with C linkage
   template<intmax_t _Pn>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/c++/7/ratio:65:3: error: template with C linkage
   template<intmax_t _Pn, intmax_t _Qn>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: ‘typeName’ has incomplete type
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:1113:7: note: forward declaration of ‘class QByteArray’
 class QByteArray;
       ^~~~~~~~~~
/usr/include/c++/7/ratio:70:3: error: template with C linkage
   template<intmax_t _Pn>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/c++/7/ratio:75:3: error: template with C linkage
   template<intmax_t _Qn>
   ^~~~~~~~
/usr/include/c++/7/ratio:86:3: error: template with C linkage
   template<intmax_t _Pn, intmax_t _Qn>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2085:1: error: template with C linkage
 QT_FOR_EACH_AUTOMATIC_TEMPLATE_SMART_POINTER(Q_DECLARE_METATYPE_TEMPLATE_SMART_POINTER_ITER)
 ^
/usr/include/c++/7/ratio:113:3: error: template with C linkage
   template<uintmax_t __hi1, uintmax_t __lo1, uintmax_t __hi2, uintmax_t __lo2>
   ^~~~~~~~
/usr/include/c++/7/ratio:119:3: error: template with C linkage
   template<uintmax_t __hi1, uintmax_t __lo1, uintmax_t __hi2, uintmax_t __lo2>
   ^~~~~~~~
/usr/include/c++/7/ratio:128:3: error: template with C linkage
   template<uintmax_t __hi1, uintmax_t __lo1, uintmax_t __hi2, uintmax_t __lo2>
   ^~~~~~~~
/usr/include/c++/7/ratio:139:3: error: template with C linkage
   template<uintmax_t __x, uintmax_t __y>
   ^~~~~~~~
/usr/include/c++/7/ratio:164:3: error: template with C linkage
   template<uintmax_t __n1, uintmax_t __n0, uintmax_t __d>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:209:3: error: template with C linkage
   template<uintmax_t __n1, uintmax_t __n0, uintmax_t __d>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:262:3: error: template with C linkage
   template<intmax_t _Num, intmax_t _Den = 1>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:279:3: error: template with C linkage
   template<intmax_t _Num, intmax_t _Den>
   ^~~~~~~~
/usr/include/c++/7/ratio:282:3: error: template with C linkage
   template<intmax_t _Num, intmax_t _Den>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:285:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:305:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:308:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:312:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:315:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:328:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:331:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:335:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:339:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:345:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:351:3: error: template with C linkage
   template<typename _R1, typename _R2,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:359:3: error: template with C linkage
   template<typename _R1, typename _R2,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:369:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:374:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:381:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:387:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:393:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:399:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:421:3: error: template with C linkage
   template<typename _R1, typename _R2,
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:437:3: error: template with C linkage
   template<typename _R1, typename _R2, bool __b>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:461:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:467:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:490:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:498:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:501:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:505:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:508:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:519:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:522:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/ratio:526:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:59:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/c++/7/chrono:63:5: error: template with C linkage
     template<typename _Rep, typename _Period = ratio<1>>
     ^~~~~~~~
/usr/include/c++/7/chrono:66:5: error: template with C linkage
     template<typename _Clock, typename _Dur = typename _Clock::duration>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:76:3: error: template with C linkage
   template<typename _CT, typename _Period1, typename _Period2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:89:3: error: template with C linkage
   template<typename _Period1, typename _Period2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:93:3: error: template with C linkage
   template<typename _Rep1, typename _Period1, typename _Rep2, typename _Period2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:102:3: error: template with C linkage
   template<typename _CT, typename _Clock>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:109:3: error: template with C linkage
   template<typename _Clock>
   ^~~~~~~~
/usr/include/c++/7/chrono:113:3: error: template with C linkage
   template<typename _Clock, typename _Duration1, typename _Duration2>
   ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:127:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR,
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:142:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:154:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:167:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:180:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/chrono:185:5: error: template with C linkage
     template<typename _Rep, typename _Period>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:191:5: error: template with C linkage
     template<typename _ToDur, typename _Rep, typename _Period>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:207:5: error: template with C linkage
     template<typename _Rep>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:275:5: error: template with C linkage
     template<typename _Rep>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:291:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/chrono:296:5: error: template with C linkage
     template<intmax_t _Num, intmax_t _Den>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/c++/7/chrono:302:5: error: template with C linkage
     template<typename _Rep, typename _Period>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2187:1: error: template specialization with C linkage
 QT_FOR_EACH_STATIC_TYPE(Q_DECLARE_BUILTIN_METATYPE)
 ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2189:1: error: template specialization with C linkage
 Q_DECLARE_METATYPE(QtMetaTypePrivate::QSequentialIterableImpl)
 ^
/usr/include/c++/7/chrono:440:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2190:1: error: template specialization with C linkage
 Q_DECLARE_METATYPE(QtMetaTypePrivate::QAssociativeIterableImpl)
 ^
/usr/include/c++/7/chrono:453:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:466:5: error: template with C linkage
     template<typename _Rep1, typename _Rep2, bool =
     ^~~~~~~~
/usr/include/c++/7/chrono:471:5: error: template with C linkage
     template<typename _Rep1, typename _Rep2>
     ^~~~~~~~
/usr/include/c++/7/chrono:475:5: error: template with C linkage
     template<typename _Rep1, typename _Period, typename _Rep2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2191:1: error: template specialization with C linkage
 Q_DECLARE_METATYPE(QtMetaTypePrivate::QPairVariantInterfaceImpl)
 ^
/usr/include/c++/7/chrono:485:5: error: template with C linkage
     template<typename _Rep1, typename _Rep2, typename _Period>
     ^~~~~~~~
/usr/include/c++/7/chrono:491:5: error: template with C linkage
     template<typename _Rep1, typename _Period, typename _Rep2>
     ^~~~~~~~
/usr/include/c++/7/chrono:501:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:514:5: error: template with C linkage
     template<typename _Rep1, typename _Period, typename _Rep2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2195:1: error: template with C linkage
 template <typename T>
 ^~~~~~~~
/usr/include/c++/7/chrono:524:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:538:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2210:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/c++/7/chrono:550:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:562:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:569:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:576:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:2227:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/c++/7/chrono:583:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:609:5: error: template with C linkage
     template<typename _Clock, typename _Dur>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:56:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:65:5: error: template with C linkage
     template <typename ArgList> struct TypesAreDeclaredMetaType { enum { Value = false }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:66:5: error: template specialization with C linkage
     template <> struct TypesAreDeclaredMetaType<List<>> { enum { Value = true }; };
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:67:5: error: template with C linkage
     template <typename Arg, typename... Tail> struct TypesAreDeclaredMetaType<List<Arg, Tail...> >
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:70:5: error: template with C linkage
     template <typename ArgList, bool Declared = TypesAreDeclaredMetaType<ArgList>::Value > struct ConnectionTypes
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:72:5: error: template specialization with C linkage
     template <> struct ConnectionTypes<List<>, true>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:74:5: error: template with C linkage
     template <typename... Args> struct ConnectionTypes<List<Args...>, true>
     ^~~~~~~~
/usr/include/c++/7/chrono:665:5: error: template with C linkage
     template<typename _ToDur, typename _Clock, typename _Dur>
     ^~~~~~~~
/usr/include/c++/7/chrono:705:5: error: template with C linkage
     template<typename _Clock, typename _Dur1,
     ^~~~~~~~
/usr/include/c++/7/chrono:718:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:731:5: error: template with C linkage
     template<typename _Clock, typename _Dur1,
     ^~~~~~~~
/usr/include/c++/7/chrono:744:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:750:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:56:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:109:5: error: template with C linkage
     template<typename Func, typename Args, typename R> class QSlotObject : public QSlotObjectBase
     ^~~~~~~~
/usr/include/c++/7/chrono:756:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:762:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:768:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:774:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:133:5: error: template with C linkage
     template<typename Func, typename Args, typename R> class QStaticSlotObject : public QSlotObjectBase
     ^~~~~~~~
/usr/include/c++/7/chrono:780:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:157:5: error: template with C linkage
     template<typename Func, int N, typename Args, typename R> class QFunctorSlotObject : public QSlotObjectBase
     ^~~~~~~~
In file included from /usr/include/c++/7/chrono:38:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:59,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/ratio:55:3: error: template with C linkage
   template<intmax_t _Pn>
   ^~~~~~~~
/usr/include/c++/7/ratio:60:3: error: template with C linkage
   template<intmax_t _Pn>
   ^~~~~~~~
/usr/include/c++/7/ratio:65:3: error: template with C linkage
   template<intmax_t _Pn, intmax_t _Qn>
   ^~~~~~~~
/usr/include/c++/7/ratio:70:3: error: template with C linkage
   template<intmax_t _Pn>
   ^~~~~~~~
/usr/include/c++/7/ratio:75:3: error: template with C linkage
   template<intmax_t _Qn>
   ^~~~~~~~
/usr/include/c++/7/ratio:86:3: error: template with C linkage
   template<intmax_t _Pn, intmax_t _Qn>
   ^~~~~~~~
/usr/include/c++/7/ratio:113:3: error: template with C linkage
   template<uintmax_t __hi1, uintmax_t __lo1, uintmax_t __hi2, uintmax_t __lo2>
   ^~~~~~~~
/usr/include/c++/7/ratio:119:3: error: template with C linkage
   template<uintmax_t __hi1, uintmax_t __lo1, uintmax_t __hi2, uintmax_t __lo2>
   ^~~~~~~~
/usr/include/c++/7/ratio:128:3: error: template with C linkage
   template<uintmax_t __hi1, uintmax_t __lo1, uintmax_t __hi2, uintmax_t __lo2>
   ^~~~~~~~
/usr/include/c++/7/ratio:139:3: error: template with C linkage
   template<uintmax_t __x, uintmax_t __y>
   ^~~~~~~~
/usr/include/c++/7/ratio:164:3: error: template with C linkage
   template<uintmax_t __n1, uintmax_t __n0, uintmax_t __d>
   ^~~~~~~~
/usr/include/c++/7/ratio:209:3: error: template with C linkage
   template<uintmax_t __n1, uintmax_t __n0, uintmax_t __d>
   ^~~~~~~~
/usr/include/c++/7/ratio:262:3: error: template with C linkage
   template<intmax_t _Num, intmax_t _Den = 1>
   ^~~~~~~~
/usr/include/c++/7/ratio:279:3: error: template with C linkage
   template<intmax_t _Num, intmax_t _Den>
   ^~~~~~~~
/usr/include/c++/7/ratio:282:3: error: template with C linkage
   template<intmax_t _Num, intmax_t _Den>
   ^~~~~~~~
/usr/include/c++/7/ratio:285:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:305:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:308:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:312:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:315:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:328:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:331:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:335:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:339:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:345:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:351:3: error: template with C linkage
   template<typename _R1, typename _R2,
   ^~~~~~~~
/usr/include/c++/7/ratio:359:3: error: template with C linkage
   template<typename _R1, typename _R2,
   ^~~~~~~~
/usr/include/c++/7/ratio:369:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:374:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:381:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:387:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:393:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:399:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:421:3: error: template with C linkage
   template<typename _R1, typename _R2,
   ^~~~~~~~
/usr/include/c++/7/ratio:437:3: error: template with C linkage
   template<typename _R1, typename _R2, bool __b>
   ^~~~~~~~
/usr/include/c++/7/ratio:461:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:467:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:490:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:498:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:501:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:505:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:508:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:519:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:522:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
/usr/include/c++/7/ratio:526:3: error: template with C linkage
   template<typename _R1, typename _R2>
   ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:59:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/c++/7/chrono:63:5: error: template with C linkage
     template<typename _Rep, typename _Period = ratio<1>>
     ^~~~~~~~
/usr/include/c++/7/chrono:66:5: error: template with C linkage
     template<typename _Clock, typename _Dur = typename _Clock::duration>
     ^~~~~~~~
/usr/include/c++/7/chrono:76:3: error: template with C linkage
   template<typename _CT, typename _Period1, typename _Period2>
   ^~~~~~~~
/usr/include/c++/7/chrono:89:3: error: template with C linkage
   template<typename _Period1, typename _Period2>
   ^~~~~~~~
/usr/include/c++/7/chrono:93:3: error: template with C linkage
   template<typename _Rep1, typename _Period1, typename _Rep2, typename _Period2>
   ^~~~~~~~
/usr/include/c++/7/chrono:102:3: error: template with C linkage
   template<typename _CT, typename _Clock>
   ^~~~~~~~
/usr/include/c++/7/chrono:109:3: error: template with C linkage
   template<typename _Clock>
   ^~~~~~~~
/usr/include/c++/7/chrono:113:3: error: template with C linkage
   template<typename _Clock, typename _Duration1, typename _Duration2>
   ^~~~~~~~
/usr/include/c++/7/chrono:127:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR,
     ^~~~~~~~
/usr/include/c++/7/chrono:142:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR>
     ^~~~~~~~
/usr/include/c++/7/chrono:154:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR>
     ^~~~~~~~
/usr/include/c++/7/chrono:167:5: error: template with C linkage
     template<typename _ToDur, typename _CF, typename _CR>
     ^~~~~~~~
/usr/include/c++/7/chrono:180:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/chrono:185:5: error: template with C linkage
     template<typename _Rep, typename _Period>
     ^~~~~~~~
/usr/include/c++/7/chrono:191:5: error: template with C linkage
     template<typename _ToDur, typename _Rep, typename _Period>
     ^~~~~~~~
/usr/include/c++/7/chrono:207:5: error: template with C linkage
     template<typename _Rep>
     ^~~~~~~~
/usr/include/c++/7/chrono:275:5: error: template with C linkage
     template<typename _Rep>
     ^~~~~~~~
/usr/include/c++/7/chrono:291:5: error: template with C linkage
     template<typename _Tp>
     ^~~~~~~~
/usr/include/c++/7/chrono:296:5: error: template with C linkage
     template<intmax_t _Num, intmax_t _Den>
     ^~~~~~~~
/usr/include/c++/7/chrono:302:5: error: template with C linkage
     template<typename _Rep, typename _Period>
     ^~~~~~~~
/usr/include/c++/7/chrono:440:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:453:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:466:5: error: template with C linkage
     template<typename _Rep1, typename _Rep2, bool =
     ^~~~~~~~
/usr/include/c++/7/chrono:471:5: error: template with C linkage
     template<typename _Rep1, typename _Rep2>
     ^~~~~~~~
/usr/include/c++/7/chrono:475:5: error: template with C linkage
     template<typename _Rep1, typename _Period, typename _Rep2>
     ^~~~~~~~
/usr/include/c++/7/chrono:485:5: error: template with C linkage
     template<typename _Rep1, typename _Rep2, typename _Period>
     ^~~~~~~~
/usr/include/c++/7/chrono:491:5: error: template with C linkage
     template<typename _Rep1, typename _Period, typename _Rep2>
     ^~~~~~~~
/usr/include/c++/7/chrono:501:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:514:5: error: template with C linkage
     template<typename _Rep1, typename _Period, typename _Rep2>
     ^~~~~~~~
/usr/include/c++/7/chrono:524:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:538:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:550:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:562:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:569:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:576:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:583:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:89:20: error: conflicting declaration of C function ‘void qt_qFindChildren_helper(const QObject*, const QRegExp&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegExp &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:87:20: note: previous declaration ‘void qt_qFindChildren_helper(const QObject*, const QString&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QString &name,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/chrono:609:5: error: template with C linkage
     template<typename _Clock, typename _Dur>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:91:20: error: conflicting declaration of C function ‘void qt_qFindChildren_helper(const QObject*, const QRegularExpression&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegularExpression &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:89:20: note: previous declaration ‘void qt_qFindChildren_helper(const QObject*, const QRegExp&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegExp &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:91:20: error: conflicting declaration of C function ‘void qt_qFindChildren_helper(const QObject*, const QRegularExpression&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegularExpression &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:87:20: note: previous declaration ‘void qt_qFindChildren_helper(const QObject*, const QString&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QString &name,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/7/chrono:665:5: error: template with C linkage
     template<typename _ToDur, typename _Clock, typename _Dur>
     ^~~~~~~~
/usr/include/c++/7/chrono:705:5: error: template with C linkage
     template<typename _Clock, typename _Dur1,
     ^~~~~~~~
/usr/include/c++/7/chrono:718:5: error: template with C linkage
     template<typename _Rep1, typename _Period1,
     ^~~~~~~~
/usr/include/c++/7/chrono:731:5: error: template with C linkage
     template<typename _Clock, typename _Dur1,
     ^~~~~~~~
/usr/include/c++/7/chrono:744:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:750:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:756:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:762:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:768:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:774:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
/usr/include/c++/7/chrono:780:5: error: template with C linkage
     template<typename _Clock, typename _Dur1, typename _Dur2>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:166:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:173:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:184:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:196:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:232:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:263:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:271:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:303:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:311:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:357:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:374:5: error: template with C linkage
     template <typename Func1>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In static member function ‘static QString QObject::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In static member function ‘static QString QObject::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In function ‘const QMetaObject* qt_getQtMetaObject()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:472:27: error: conflicting declaration of ‘const QMetaObject* qt_getQtMetaObject()’ with ‘C’ linkage
 inline const QMetaObject *qt_getQtMetaObject() Q_DECL_NOEXCEPT
                           ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:441:38: note: previous declaration with ‘C++’ linkage
     friend inline const QMetaObject *qt_getQtMetaObject() Q_DECL_NOEXCEPT;
                                      ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:508:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:517:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:527:1: error: template with C linkage
 template <class T> inline const char * qobject_interface_iid()
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:541:22: error: conflicting declaration of C function ‘QDebug operator<<(QDebug, const QObject*)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QObject *);
                      ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:129:22: note: previous declaration ‘QDebug operator<<(QDebug, const QRegExp&)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QRegExp &);
                      ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:541:22: error: conflicting declaration of C function ‘QDebug operator<<(QDebug, const QObject*)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QObject *);
                      ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:124:28: note: previous declaration ‘QDataStream& operator<<(QDataStream&, const QRegExp&)’
 Q_CORE_EXPORT QDataStream &operator<<(QDataStream &out, const QRegExp &regExp);
                            ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In function ‘QObject& QtPrivate::deref_for_methodcall(QObject*)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:623:22: error: conflicting declaration of C function ‘QObject& QtPrivate::deref_for_methodcall(QObject*)’
     inline QObject & deref_for_methodcall(QObject *o) { return *o; }
                      ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:622:22: note: previous declaration ‘QObject& QtPrivate::deref_for_methodcall(QObject&)’
     inline QObject & deref_for_methodcall(QObject &o) { return  o; }
                      ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QScopedPointer:1,
                 from /tmp/doomseeker-1.1_src/src/core/dptr.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:89:20: error: conflicting declaration of C function ‘void qt_qFindChildren_helper(const QObject*, const QRegExp&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegExp &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:87:20: note: previous declaration ‘void qt_qFindChildren_helper(const QObject*, const QString&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QString &name,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:91:20: error: conflicting declaration of C function ‘void qt_qFindChildren_helper(const QObject*, const QRegularExpression&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegularExpression &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:89:20: note: previous declaration ‘void qt_qFindChildren_helper(const QObject*, const QRegExp&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegExp &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:91:20: error: conflicting declaration of C function ‘void qt_qFindChildren_helper(const QObject*, const QRegularExpression&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegularExpression &re,
                    ^~~~~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:87:20: note: previous declaration ‘void qt_qFindChildren_helper(const QObject*, const QString&, const QMetaObject&, QList<void*>*, Qt::FindChildOptions)’
 Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QString &name,
                    ^~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:166:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:173:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:184:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:196:5: error: template with C linkage
     template<typename T>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:232:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:263:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:271:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:303:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:311:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:357:5: error: template with C linkage
     template <typename Func1, typename Func2>
     ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:374:5: error: template with C linkage
     template <typename Func1>
     ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In static member function ‘static QString QObject::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In static member function ‘static QString QObject::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:118:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In function ‘const QMetaObject* qt_getQtMetaObject()’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:472:27: error: conflicting declaration of ‘const QMetaObject* qt_getQtMetaObject()’ with ‘C’ linkage
 inline const QMetaObject *qt_getQtMetaObject() Q_DECL_NOEXCEPT
                           ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:441:38: note: previous declaration with ‘C++’ linkage
     friend inline const QMetaObject *qt_getQtMetaObject() Q_DECL_NOEXCEPT;
                                      ^~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: At global scope:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:508:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:517:1: error: template with C linkage
 template <class T>
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:527:1: error: template with C linkage
 template <class T> inline const char * qobject_interface_iid()
 ^~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:541:22: error: conflicting declaration of C function ‘QDebug operator<<(QDebug, const QObject*)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QObject *);
                      ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:129:22: note: previous declaration ‘QDebug operator<<(QDebug, const QRegExp&)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QRegExp &);
                      ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:541:22: error: conflicting declaration of C function ‘QDebug operator<<(QDebug, const QObject*)’
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QObject *);
                      ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:47:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:1094,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:124:28: note: previous declaration ‘QDataStream& operator<<(QDataStream&, const QRegExp&)’
 Q_CORE_EXPORT QDataStream &operator<<(QDataStream &out, const QRegExp &regExp);
                            ^~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h: In function ‘QObject& QtPrivate::deref_for_methodcall(QObject*)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:623:22: error: conflicting declaration of C function ‘QObject& QtPrivate::deref_for_methodcall(QObject*)’
     inline QObject & deref_for_methodcall(QObject *o) { return *o; }
                      ^~~~~~~~~~~~~~~~~~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:622:22: note: previous declaration ‘QObject& QtPrivate::deref_for_methodcall(QObject&)’
     inline QObject & deref_for_methodcall(QObject &o) { return  o; }
                      ^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::tr(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:46:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h: In static member function ‘static QString QThread::trUtf8(const char*, const char*, int)’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: return type ‘class QString’ is incomplete
     Q_OBJECT
     ^
/usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:57:5: error: invalid use of incomplete type ‘class QString’
     Q_OBJECT
     ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qnamespace.h:43:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/Qt:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:26,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h:702:7: note: forward declaration of ‘class QString’
 class QString;
       ^~~~~~~
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.h:28,
                 from /tmp/doomseeker-1.1_src/src/core/commandlinetokenizer.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = void*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:533:31:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QRegExpPrivate*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:79:70:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QTypedArrayData<char>*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:182:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QTypedArrayData<short unsigned int>*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:230:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QListData::Data*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:161:61:   required from ‘void QList<T>::swap(QList<T>&) [with T = QString]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:504:9:   required from ‘QList<T>& QList<T>::operator=(const QList<T>&) [with T = QString]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:116:38:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
make[2]: *** [src/core/CMakeFiles/doomseeker.dir/build.make:556: src/core/CMakeFiles/doomseeker.dir/commandlinetokenizer.cpp.o] Error 1
In file included from /usr/include/c++/7/vector:65:0,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qmetatype.h:53,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:54,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qthread.h:43,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QThread:1,
                 from /tmp/doomseeker-1.1_src/src/core/global.h:5,
                 from /tmp/doomseeker-1.1_src/src/core/strings.h:26,
                 from /usr/include/string.h:431,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:44,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:46,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:49,
                 from /usr/include/x86_64-linux-gnu/qt5/QtCore/QString:1,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.h:27,
                 from /tmp/doomseeker-1.1_src/src/core/commandline.cpp:23:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = void*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs.h:533:31:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QRegExpPrivate*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qregexp.h:79:70:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QTypedArrayData<char>*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qbytearray.h:182:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QTypedArrayData<short unsigned int>*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstring.h:230:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QRegion::QRegionData*]’:
/usr/include/x86_64-linux-gnu/qt5/QtGui/qregion.h:79:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QScopedPointer<QPainterPathPrivate, QPainterPathPrivateDeleter>]’:
/usr/include/x86_64-linux-gnu/qt5/QtGui/qpainterpath.h:97:31:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QImageData*]’:
/usr/include/x86_64-linux-gnu/qt5/QtGui/qimage.h:153:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QIconPrivate*]’:
/usr/include/x86_64-linux-gnu/qt5/QtGui/qicon.h:77:23:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QTypedArrayData<QPoint>*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:82:56:   required from ‘void QVector<T>::swap(QVector<T>&) [with T = QPoint]’
/usr/include/x86_64-linux-gnu/qt5/QtGui/qpolygon.h:74:66:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QTypedArrayData<QPointF>*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qvector.h:82:56:   required from ‘void QVector<T>::swap(QVector<T>&) [with T = QPointF]’
/usr/include/x86_64-linux-gnu/qt5/QtGui/qpolygon.h:157:60:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QPainterPathPrivate*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:166:14:   required from ‘void QScopedPointer<T, Cleanup>::swap(QScopedPointer<T, Cleanup>&) [with T = QPainterPathPrivate; Cleanup = QPainterPathPrivateDeleter]’
/usr/include/x86_64-linux-gnu/qt5/QtGui/qpainterpath.h:100:83:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QListData::Data*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:161:61:   required from ‘void QList<T>::swap(QList<T>&) [with T = QString]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:504:9:   required from ‘QList<T>& QList<T>::operator=(const QList<T>&) [with T = QString]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qstringlist.h:116:38:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QFileInfoPrivate*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:124:12:   required from ‘void QSharedDataPointer<T>::swap(QSharedDataPointer<T>&) [with T = QFileInfoPrivate]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:268:3:   required from ‘void qSwap(QSharedDataPointer<T>&, QSharedDataPointer<T>&) [with T = QFileInfoPrivate]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qfileinfo.h:75:31:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QDirPrivate*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:124:12:   required from ‘void QSharedDataPointer<T>::swap(QSharedDataPointer<T>&) [with T = QDirPrivate]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:268:3:   required from ‘void qSwap(QSharedDataPointer<T>&, QSharedDataPointer<T>&) [with T = QDirPrivate]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qdir.h:114:31:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/x86_64-linux-gnu/qt5/QtCore/qglobal.h: In instantiation of ‘void qSwap(T&, T&) [with T = QPlatformPixmap*]’:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:213:12:   required from ‘void QExplicitlySharedDataPointer<T>::swap(QExplicitlySharedDataPointer<T>&) [with T = QPlatformPixmap]’
/usr/include/x86_64-linux-gnu/qt5/QtCore/qshareddata.h:272:3:   required from ‘void qSwap(QExplicitlySharedDataPointer<T>&, QExplicitlySharedDataPointer<T>&) [with T = QPlatformPixmap]’
/usr/include/x86_64-linux-gnu/qt5/QtGui/qpixmap.h:78:29:   required from here
/usr/include/c++/7/bits/stl_bvector.h:120:3: error: conflicting declaration of C function ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:120:3: note: previous declaration ‘void std::swap(std::_Bit_reference, bool&)’
   swap(_Bit_reference __x, bool& __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:128:3: error: conflicting declaration of C function ‘void std::swap(bool&, std::_Bit_reference)’
   swap(bool& __x, _Bit_reference __y) noexcept
   ^~~~
/usr/include/c++/7/bits/stl_bvector.h:112:3: note: previous declaration ‘void std::swap(std::_Bit_reference, std::_Bit_reference)’
   swap(_Bit_reference __x, _Bit_reference __y) noexcept
   ^~~~
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