Bug#991177: libdebian-installer: reproducible builds: Embeds build path in libdebian-installer-extra.so.*

[Vagrant Cascadian]

Source: libdebian-installer
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 various places in
libdebian-installer-extra.so.*:

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

  ./usr/lib/x86_64-linux-gnu/libdebian-installer-extra.so.4.0.8 

  /build/1st/libdebian-installer-0.121/build/src/../../src/list.c:30
  vs.
  /build/2/libdebian-installer-0.121/2nd/build/src/../../src/list.c:30

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

Alternately, with recent versions of dpkg, using dpkg-buildflags to set
CFLAGS should pass this option by default.


Thanks for maintaining libdebian-installer!


live well,
  vagrant
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