Bug#1009931: gmp: reproducible-builds: Embedded build paths in various files

[Vagrant Cascadian]

Source: gmp
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 files:

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

  /usr/include/x86_64-linux-gnu/gmp.h

  #define·__GMP_CFLAGS·"-g·-O2·-ffile-prefix-map=/build/1st/gmp-6.2.1+dfsg=.·-fstack-..."
  vs.
  #define·__GMP_CFLAGS·"-g·-O2·-ffile-prefix-map=/build/2/gmp-6.2.1+dfsg/2nd=.·-fstack-..."

  /usr/lib/x86_64-linux-gnu/libgmp.so.10.4.1

  /build/1st/gmp-6.2.1+dfsg/build/mpn/tmp-add_n.s:97
  vs.
  /build/2/gmp-6.2.1+dfsg/2nd/build/mpn/tmp-add_n.s:97

The attached patches fix this by replacing the build path with
"BUILDPATH" from in debian/rules, and passing a --debug-prefix-map
argument to use relative paths via ASMFLAGS in configure.


With these patches applied gmp should build reproducibly on
tests.reproducible-builds.org!


Thanks for maintaining gmp!


live well,
  vagrant
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