Bug#1010872: efax: reproducible-builds: differing buildid in /usr/bin/efax and /usr/bin/efix

[Vagrant Cascadian]

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

Both /usr/bin/efax and /usr/bin/efix embed different buildids based on
the build path:

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

  Build·ID:·bbce73232e3a81a5db70703d12c5ce89ecf11d8d
  vs.
  Build·ID:·ec6d84e3221a010689b83ef8327769e2da58cd2d

The attached patch fixes this by passing -ffile-prefix-map via CFLAGS in
debian/rules to avoid embedding the absolute build paths in binaries.

Alternately, this might be solved by switching to using "dh" in
debian/rules, which should use the default values for CFLAGS from
dpkg-buildflags.


With these patches applied, efax should build reproducibly on
tests.reproducible-builds.org!


live well,
  vagrant
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