Bug#1020887: checkpw: reproducible-builds: buildid differences in /usr/bin/checkpw

[Vagrant Cascadian]

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

The buildid varies when built from a different path for
/usr/bin/checkpw:

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

The attached patch to debian/rules fixes this by adding
-ffile-prefix-map to CFLAGS.

Alternately, updating to a newer debhelper compat level might fix this.

According to my local tests, with this patch applied, and the patch
submitted in 2015 for bug #777299, checkpw should build reproducibly on
tests.reproducible-builds.org!

Thanks for maintaining checkpw!

live well,
  vagrant
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