Mesa currently disables -fPIC for DRI on x86, but most Linux distros are
re-enabling -fPIC for all DRI arches. Let's just do that here since
that's normally what's wanted for shared libraries. Some justification:
http://bugs.gentoo.org/show_bug.cgi?id=110840#c9
On the other hand, position-independent code is only necessary when
building shared libraries, so disable it for the static cases.
The linux-static target was missing necessary libraries and hardcoding
their location to /usr/X11R6/lib. This makes it comparable to the x86
and x86-64 static targets.
Dan Nicholson
Brian Paul
Ian Romanick