[CMake] XCode + GCC 4.2

[Brad King]

Hai Nguyen wrote:
> I can't seem to get the combination of XCode and GCC 4.2 to be happy
> with CMaka. I've tried several different ways to set the compiler
> version. Setting the CMAKE_C/CXX_COMPILER doesn't seem to work. But if i
> set the environment variabes, CMake comes back and tells me something
> like this:
> 
>   Run Build Command:/usr/local/bin/cmakexbuild -project
>   CMAKE_TRY_COMPILE.xcodeproj build -target cmTryCompileExec -configuration
>   Debug
> 
>   2009-12-18 00:50:45.858 xcodebuild[42636:331b] Warning: Couldn't discover
>   the 'gcc-4.2' compiler's built-in search paths and preprocessor
> definitions
>   for language dialect 'c'.  This may lead to indexing issues.
> 
>   Compiler: /Developer/Library/Xcode/Plug-ins/GCC
>   4.0.xcplugin/Contents/Resources/gcc-4.2
> 
>   Reason: sh: /Developer/Library/Xcode/Plug-ins/GCC
>   4.0.xcplugin/Contents/Resources/gcc-4.2: No such file or directory
> 
> What am I missing with here...?

CMake doesn't yet support choosing the Xcode compiler.

  http://www.cmake.org/Bug/view.php?id=9125

-Brad