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authorBernhard M. Wiedemann <bwiedemann@suse.de>2019-08-01 13:18:03 (GMT)
committerVictor Stinner <vstinner@redhat.com>2019-08-01 13:18:03 (GMT)
commit0d30ae1a03102de07758650af9243fd31211325a (patch)
tree2814f7683eda24944220d0c6cd2c03f77a82e3ce /Lib/distutils/command
parent1a057bab0f18d6ad843ce321d1d77a4819497ae4 (diff)
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bpo-36302: Sort list of sources (GH-12341)
When building packages (e.g. for openSUSE Linux) (random) filesystem order of input files influences ordering of functions in the output .so files. Thus without the patch, builds (in disposable VMs) would usually differ. Without this patch, all callers have to be patched individually https://github.com/dugsong/libdnet/pull/42 https://github.com/sass/libsass-python/pull/212 https://github.com/tahoe-lafs/pycryptopp/pull/41 https://github.com/yt-project/yt/pull/2206 https://github.com/pyproj4/pyproj/pull/142 https://github.com/pytries/datrie/pull/49 https://github.com/Roche/pyreadstat/pull/37 but that is an infinite effort. See https://reproducible-builds.org/ for why this matters.
Diffstat (limited to 'Lib/distutils/command')
-rw-r--r--Lib/distutils/command/build_ext.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/distutils/command/build_ext.py b/Lib/distutils/command/build_ext.py
index 2d7cdf0..38bb8fd 100644
--- a/Lib/distutils/command/build_ext.py
+++ b/Lib/distutils/command/build_ext.py
@@ -490,7 +490,8 @@ class build_ext(Command):
"in 'ext_modules' option (extension '%s'), "
"'sources' must be present and must be "
"a list of source filenames" % ext.name)
- sources = list(sources)
+ # sort to make the resulting .so file build reproducible
+ sources = sorted(sources)
ext_path = self.get_ext_fullpath(ext.name)
depends = sources + ext.depends