Comment # 2 on bug 65963 from Damian Nowak

Thanks for taking a look at it. Package versions as follows. Pasting a
PKGBUILDs so you can see the flags for compilation.

extra/mesa 9.1.3-1
 
https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/mesa
extra/llvm-amdgpu-lib-snapshot 20130403-3
 
https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/llvm-amdgpu-snapshot

Let me know if you want me to install these from git as well.