MantisBT - Doomseeker |
| View Issue Details |
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| ID | Project | Category | View Status | Date Submitted | Last Update |
| 0003256 | Doomseeker | [All Projects] Bug | public | 2017-09-07 21:55 | 2019-06-12 00:23 |
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| Reporter | WubTheCaptain | |
| Assigned To | Pol M | |
| Priority | low | Severity | minor | Reproducibility | sometimes |
| Status | feedback | Resolution | open | |
| Platform | x86_64 | OS | Debian GNU/Linux | OS Version | buster/sid |
| Product Version | 1.1 | |
| Target Version | | Fixed in Version | | |
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| Summary | 0003256: Failure to reproduce builds with variations in build path |
| Description | The build system is not entirely deterministic, or the build environment of officially released binaries is not recorded or pre-defined.
Variations in build path create different binary results. |
| Steps To Reproduce | To keep this simple, I have to abstract this a little bit. On the high level, consider two paths: "1st" and "2nd".
- Path "1st" is build normally.
- Path "2nd" is built from a clean environment and renamed to "2nd.orig" for future reference.
- Path "2nd" is re-created and built from a clean environment.
To make sure my build environment was clean, I always extracted from the source distribution to a path and did not exercise running make clean.
"1st" and "2nd" binaries differ. "2nd.orig" and "2nd" binaries are identical.
dpkg.log has the full list of packages in the environment. |
| Additional Information | CMake's -C option for initial cache was not used. I ignored the differences in CMake's output and error logs as out of scope.
Doomseeker and libwadseeker have no special documentation about reproducible builds. |
| Tags | No tags attached. |
| Relationships | | related to | 0003239 | closed | Zalewa | engines/libzandronum.so: Defines RPATH from somewhere | | child of | 0003255 | confirmed | | Support reproducible, deterministic builds |
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| Attached Files |  dpkg.log (152,943) 2017-09-07 21:55
/tracker/file_download.php?file_id=2192&type=bug
doomseeker-diff.log (21,211) 2017-09-07 21:55
/tracker/file_download.php?file_id=2193&type=bug
libwadseeker-diff.log (3,326) 2017-09-07 21:56
/tracker/file_download.php?file_id=2194&type=bug
CMakeCache.diff (658) 2017-09-07 22:06
/tracker/file_download.php?file_id=2195&type=bug
doomseeker-2nd-2nd_orig.diff (258) 2017-09-07 22:21
/tracker/file_download.php?file_id=2196&type=bug
libwadseeker-2nd-2nd_orig.diff (266) 2017-09-07 22:21
/tracker/file_download.php?file_id=2197&type=bug
 diffoscope-v86.log.gz (333,690) 2017-09-08 00:41
/tracker/file_download.php?file_id=2198&type=bug
diffoscope-deb.log.gz (13,319) 2017-09-08 01:32
/tracker/file_download.php?file_id=2199&type=bug |
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| Issue History |
| Date Modified | Username | Field | Change |
| 2017-09-07 21:55 | WubTheCaptain | New Issue | |
| 2017-09-07 21:55 | WubTheCaptain | File Added: dpkg.log | |
| 2017-09-07 21:55 | WubTheCaptain | File Added: doomseeker-diff.log | |
| 2017-09-07 21:56 | WubTheCaptain | File Added: libwadseeker-diff.log | |
| 2017-09-07 21:57 | WubTheCaptain | Note Added: 0018239 | |
| 2017-09-07 22:06 | WubTheCaptain | File Added: CMakeCache.diff | |
| 2017-09-07 22:21 | WubTheCaptain | File Added: doomseeker-2nd-2nd_orig.diff | |
| 2017-09-07 22:21 | WubTheCaptain | File Added: libwadseeker-2nd-2nd_orig.diff | |
| 2017-09-08 00:41 | WubTheCaptain | File Added: diffoscope-v86.log.gz | |
| 2017-09-08 00:45 | WubTheCaptain | Note Added: 0018243 | |
| 2017-09-08 00:46 | WubTheCaptain | Note Edited: 0018243 | bug_revision_view_page.php?bugnote_id=18243#r10906 |
| 2017-09-08 01:32 | WubTheCaptain | File Added: diffoscope-deb.log.gz | |
| 2017-09-08 01:33 | WubTheCaptain | Note Added: 0018245 | |
| 2017-09-08 01:53 | Blzut3 | Relationship added | child of 0003255 |
| 2017-09-09 01:56 | Blzut3 | Relationship added | related to 0003239 |
| 2017-10-05 01:52 | WubTheCaptain | Note Added: 0018446 | |
| 2017-10-05 01:52 | WubTheCaptain | Status | new => needs testing |
| 2017-10-07 11:56 | WubTheCaptain | Note Added: 0018468 | |
| 2017-10-07 11:56 | WubTheCaptain | Status | needs testing => new |
| 2018-10-05 06:36 | WubTheCaptain | Priority | normal => low |
| 2019-06-05 19:11 | Pol M | Note Added: 0020730 | |
| 2019-06-12 00:23 | WubTheCaptain | Note Added: 0020744 | |
| 2019-06-12 00:23 | WubTheCaptain | Assigned To | => Pol M |
| 2019-06-12 00:23 | WubTheCaptain | Status | new => feedback |
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Notes |
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For clarification: I followed only the instructions provided in COMPILE.txt:
mkdir build
cd build
cmake ..
make |
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(0018243)
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WubTheCaptain
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2017-09-08 00:45
(edited on: 2017-09-08 00:46) |
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The underlying cause seems to be RPATH or RUNPATH: 0003239
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Uploaded a diffoscope v86 from .deb builds, it's a bit cleaner. |
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Per comments in 0003239, – though I did not explicitly test this – I believe this is still unresolved because the resulting Doomseeker executable gets a RUNPATH pre-install.
One step closer now, however. |
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(0020730)
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Pol M
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2019-06-05 19:11
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Compared sha512 of two compilations with variations of path and without using QT_HASH_SEED, the binaries are equal. What is left to do? I don't quite get what you mean with:
Quote from Wub
...because the resulting Doomseeker executable gets a RUNPATH pre-install.
Maybe you could elavorate? is there something more apart from binaries being the same? |
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I will have to revisit this later. |
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