Bug#990910: p7zip: reproducible builds: parallelism triggers differences

[Vagrant Cascadian]

Source: p7zip
Severity: normal
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: randomness
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

Apparently p7zip includes different paths when built in parallel:

  https://tests.reproducible-builds.org/debian/rb-pkg/bullseye/amd64/diffoscope-results/p7zip.html

  /usr/lib/p7zip/7z

  ../../../../CPP/myWindows/StdAfx.h:68
  vs.
  ../../../myWindows/StdAfx.h:68


The attached patch fixes this by disabling parallelism during the build.

With this patch applied, p7zip should be reproducible on
tests.reproducible-builds.org.


It may be possible to dig deeper into p7zip to fix the issues with a
parallel build, but I haven't found a good starting point to do so.


Thanks for maintaining p7zip!


live well,
  vagrant
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