mxcl/homebrew — pull request #8294 by Sharpie (2011-10-25 18:58:44+00:00)
Title: formula.rb: Change fails_with_llvm for XCode 4.2

Suggest trying `--use-clang` instead of `--use-gcc` (which does nothing).

@adamv @mikemcquaid @mxcl @jacknagel

Another thought would be to have `--use-gcc` throw an error under XCode 4.2. But, this could have unforeseen consequences for people who are augmenting their XCode 4.2 installs with older GCC binaries.

Either way, the current `fails_with_llvm` warning is misleading for users of 4.2.