[Debian-med-packaging] Bug#841671: pbbam: Fix for building with -Wl, --as-needed

[Steve Langasek]

Package: pbbam
Version: 0.5.0-2
Severity: normal
Tags: patch
User: ubuntu-devel at lists.ubuntu.com
Usertags: origin-ubuntu zesty ubuntu-patch

Hi Afif,

In Ubuntu, pbbam was failing to build because when linking libpbbam.so, the
library arguments were listed on the commandline before the objects being
linked.  Ubuntu uses -Wl,--as-needed in its linker arguments, which causes
libraries that aren't used to be ignored; and so libraries listed before the
objects that use them are not linked against.

You can read more about this behavior here:

  https://wiki.ubuntu.com/ToolChain/CompilerFlags#Flags_passed_to_the_linker

I've applied a small patch in Ubuntu to fix this, with the following
changelog explanation:

  * debian/rules: fix cmake arguments so that library arguments are in the
    right order for -Wl,--as-needed.

While Debian does not currently use -Wl,--as-needed by default and this is
not a build issue in Debian, applying this patch will make your package more
portable in general.  Please consider applying it.

Thanks,
-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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