Bug#1014560: ygl: reproducible-builds: embedded build paths in libYgl.so.*

[Vagrant Cascadian]

Source: ygl
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/libYgl.so.4.2:

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

  /build/1st/ygl-4.2e/ygl.c:525
  vs.
  /build/2/ygl-4.2e/2nd/ygl.c:525

The attached patch fixes this by passing a variable to dh_auto_build in
debian/rules with the -ffile-prefix-map compiler flag to avoid embedding
the build path.


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


live well,
  vagrant
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