Bug#1020657: netris: reproducible-builds: Embedded build path in /usr/games/netris

[Vagrant Cascadian]

Source: netris
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/games/netris:

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

  /build/1st/netris-0.52/game.c:49
  vs.
  /build/2/netris-0.52/2nd/game.c:49

The attached patch fixes this in a debian/rules dh_auto_build override
by passing the -ffile-prefix-map argument via the CEXTRA variable.

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

Thanks for maintaining netris!

live well,
  vagrant
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