[PATCH] pkgconfig files should be installed to $(libdir)

[Mark Kettenis]

> From: Gaetan Nadon <memsize at videotron.ca>
> Date: Thu, 17 Nov 2011 09:04:36 -0500
> 
> We need to comply with the FHS standard. If we don't, other
> installations will break as they use a /usr/share as a common filesystem
> for architecture independent data. The location is not really a project
> preference but a standard that OS are expecting we follow.

Sorry, Gaeton, but FHS isn't a generally accepted standard.  The FHS
people have pushed it as such, but it really is a Linux-specific
standard.  So perhaps it is something that Linux distros are expected
to follow, but you shouldn't expect other UNIX-like OSes to follow it.

That said I believe /usr/share was a BSD invention that seems to have
made it back into most systems derived from System V.  So /usr/share
is pretty much a standard for UNIX-like systems.  Although I doubt
anybody sane still uses it as a common filesystem.

Not that the FHS is really relevant here.  What matters is what
pkg-config expects.  Newer versions do look in /usr/share/pkgconfig,
older versions don't.  I argued against the s/libdir/datadir/ change
back in the days for that reason, but modern pkgconfig is pretty much
a requirement for Xorg these days, and at least some Linux distros do
use /usr/share/pkgconfig to create arch-independent packages.