[CMake] CMake and iPhone support

[Bill Hoffman]

Robert Dailey wrote:
> It seems that CMake, in general, does not support cross-compilation. It 
> generates projects as if they will build targets on the current platform 
> instead of for another. Correct me if I'm wrong.
> 

http://www.cmake.org/Wiki/CMake_Cross_Compiling

The env and cache variable CMAKE_OSX_ARCHITECTURES can be used to build 
different architectures on OSX.  I have not tried with the iphone, but 
it works with ppc, i386, i686.

-Bill