Bug#1010859: libnss-gw-name: reproducible-builds: embedded build paths in libnss_gw_name.so.*

[Vagrant Cascadian]

Source: libnss-gw-name
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/x86_64-linux-gnu/libnss_gw_name.so.2:

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

  /build/1st/libnss-gw-name-0.3/libnss_gw_name.c:107
  vs.
  /build/2/libnss-gw-name-0.3/2nd/libnss_gw_name.c:107

The attached patch fixes this by updating to use debhelper compat level
13 and switching to use "dh" in debian/rules. This passes the default
CFLAGS from dpkg-buildflags, which includes the -ffile-prefix-map
argument to avoid embedding the absolute path in compiled files.


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


live well,
  vagrant
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