HI Mike,

> SET(CMAKE_C_COMPILER "clang")
> SET(CMAKE_CXX_COMPILER "clang++")
>
> Those really will have no effect. If you want to use Clang, then set the CC 
> and CXX environment variables BEFORE running cmake for the first time. By the 
> time CMake gets to those lines the C and C++ compilers are already set and 
> can not be changed.

ok, I got it. so I can just do this in a shell script so I dont have
to remember to do it!

Thanks for the explanation.

-Jason
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