Use llvm/clang trunk with XCode 4.3

  1. Install llvm-head with clang: brew install –HEAD –with-clang –analyzer –rtti –jit llvm
  2. Create a User-Defined variable in your Xcode project
    • Variable name: CC
    • Value: /usr/local/bin/clang
  3. Enjoy!

Reference: http://blog.wadetregaskis.com/tot-clang-llvm-in-xcode/