Bug#1011402: razor: reproducible-builds: embedded build paths in deHTMLxs.so

[Vagrant Cascadian]

Source: razor
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/perl5/5.34/auto/Razor2/Preproc/deHTMLxs/deHTMLxs.so:

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

  /build/1st/razor-2.85/Razor2-Preproc-deHTMLxs/_deHTMLxs.c:56
  vs.
  /build/2/razor-2.85/2nd/Razor2-Preproc-deHTMLxs/_deHTMLxs.c:56

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.

To make the switch, it was also easiest to also switch to "3.0 (quilt)"
at the same time, so this also closes #1007665.


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


live well,
  vagrant
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