Bug#1011428: cdbackup: reproducible-builds: embedded build paths in various binaries

[Vagrant Cascadian]

Source: cdbackup
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 build path is embedded in /usr/bin/cdbackup and /usr/bin/cdrestore:

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

  /build/1st/cdbackup-0.7.1/cdbackup.c:421
  vs.
  /build/2/cdbackup-0.7.1/2nd/cdbackup.c:421

The attached patch fixes this by explicitly passing CFLAGS to
dh_auto_build in debian/rules, which includes the -ffile-prefix-map
argument to avoid embedding the absolute path in compiled files.


With this patch applied, cdbackup should build reproducibly on
tests.reproducible-builds.org!


live well,
  vagrant
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