compiling with llvm installed

[GoogleCodeExporter]

What steps will reproduce the problem?
1. brew install llvm
2. cmake CMakeLists.txt 

What is the expected output? What do you see instead?

successful compilation

What version of the product are you using? On what operating system?

CMake Error at CMakeLists.txt:8 (message):
  LLVM was not found!


-- Configuring incomplete, errors occurred!


Please provide any additional information below.

It should be possible to compile with llvm installed, instead of as part of the 
llvm source tree.

Original issue reported on code.google.com by [email protected] on 17 Jun 2014 at 10:11