Bug#1011480: libxsettings-client: reproducible-builds: embedded build paths

[Vagrant Cascadian]

Source: libxsettings-client
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/lib/libXsettings-client.so.0.0.0:

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

  /build/1st/libxsettings-client-0.17/xsettings-client.c:340
  vs.
  /build/2/libxsettings-client-0.17/2nd/xsettings-client.c:340

The attached patch fixes this by setting -ffile-prefix-map in CFLAGS in
debian/rules, which avoids embedding the absolute build path.

Alternately, switching to use a newer debhelper compat level and the dh
build system would likely also fix this, as it includes -ffile-prefix-map
by default.


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


live well,
  vagrant
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