Bug#1039624: icu: reproducible-builds: embedded SHELL and build paths

[Vagrant Cascadian]

Source: icu
Version: 23.06.14+git20230616+ds-4
Severity: normal
Tags: patch
User: reproducible-builds at lists.alioth.debian.org
Usertags: shell buildpath
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org

various files contain embedded build paths and differing values for
SHELL:

  https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/icu.html

  /usr/share/doc/icu-doc/html/icudocs.tag.gz

  <path>/build/1st/icu-72.1/source/common/unicode/</path>
  vs.
  <path>/build/2/icu-72.1/2nd/source/common/unicode/</path>

  /usr/lib/x86_64-linux-gnu/icu/72.1/Makefile.inc

  SHELL·=·/bin/bash
  vs.
  SHELL·=·/bin/sh

The attached patches modify debian/rules remove the build path and
consistently set SHELL to /bin/sh on the affected files.

With both these patches applied, based on my local tests, icu should
build reproducibly on tests.reproducible-builds.org!

Thanks for maintaining icu!

live well,
  vagrant
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