* bug#23307: VLC does not build deterministically
@ 2016-04-18 11:46 Ludovic Courtès
2016-04-18 13:42 ` Ludovic Courtès
0 siblings, 1 reply; 2+ messages in thread
From: Ludovic Courtès @ 2016-04-18 11:46 UTC (permalink / raw)
To: 23307
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Commit 4ef2721b52c4929aac15db4f8b39702cd37955a1 fixed an obvious
timestamp-related reproducibility issue in VLC 2.2.1, but there remains
a problem with the ‘lib/vlc/plugins/plugins.dat’ whose contents differ
across rebuilds by a few 32-bit values (see attached diffoscope output.)
The ‘plugins.dat’ file is generated by this rule in bin/Makefile.am:
--8<---------------cut here---------------start------------->8---
../modules/plugins.dat: vlc-cache-gen$(EXEEXT)
$(AM_V_at)rm -f ../modules/plugins.dat
$(AM_V_GEN)if test "$(build)" = "$(host)"; then \
./vlc-cache-gen$(EXEEXT) ../modules ; \
else \
echo "Cross-compilation: cache generation skipped!" ; \
fi
--8<---------------cut here---------------end--------------->8---
Ludo’.
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^ permalink raw reply [flat|nested] 2+ messages in thread
* bug#23307: VLC does not build deterministically
2016-04-18 11:46 bug#23307: VLC does not build deterministically Ludovic Courtès
@ 2016-04-18 13:42 ` Ludovic Courtès
0 siblings, 0 replies; 2+ messages in thread
From: Ludovic Courtès @ 2016-04-18 13:42 UTC (permalink / raw)
To: 23307-done
ludo@gnu.org (Ludovic Courtès) skribis:
> Commit 4ef2721b52c4929aac15db4f8b39702cd37955a1 fixed an obvious
> timestamp-related reproducibility issue in VLC 2.2.1, but there remains
> a problem with the ‘lib/vlc/plugins/plugins.dat’ whose contents differ
> across rebuilds by a few 32-bit values (see attached diffoscope output.)
>
> The ‘plugins.dat’ file is generated by this rule in bin/Makefile.am:
>
> ../modules/plugins.dat: vlc-cache-gen$(EXEEXT)
> $(AM_V_at)rm -f ../modules/plugins.dat
> $(AM_V_GEN)if test "$(build)" = "$(host)"; then \
> ./vlc-cache-gen$(EXEEXT) ../modules ; \
> else \
> echo "Cross-compilation: cache generation skipped!" ; \
> fi
Turned out to be simple:
http://git.savannah.gnu.org/cgit/guix.git/commit/?id=cd76fbde6f70a6c0087f9330c266d51e334a0679
Ludo’.
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2016-04-18 11:46 bug#23307: VLC does not build deterministically Ludovic Courtès
2016-04-18 13:42 ` Ludovic Courtès
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