Comment # 22 on bug 89685 from Kevin

Today I tried building and installing llvm from git but I still have the issue.
Could anyone tell me if it looks like I did this correctly? Do I need to do
anything special for 32-bit vs 64-bit support? Should I remove llvm installed
from Arch Linux repo before this?

mkdir llvm-git
cd llvm-git/
git clone http://llvm.org/git/llvm.git
cmake ~/builds/llvm-git/llvm/
cmake --build .
sudo cmake --build . --target install