title: xcode - how to change compiler?
body: <p>I am trying to change the compiler version in xcode 3.1.4. I went to Project settings -> Build -> Compiler version, but I can only choose "com.apple.compilers.llvmgcc42".</p>
  
  <p>I looked up the library/xcode/plugins/-folder and it looks like there are several compiler versions installed. But I can't choose them in the project' settings?</p>
  
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  <p>Sadly, this doesn't help my problem with the compilers. Does anyone know why xcode doesn't show up any additional compiler versions, altough they seem to bee in the plugin list?
  I already searched a lot, but it looks like all the tutorials are assuming, that the different compilers are already available in the build settings...</p>