I\'m a complete beginner to Apple\'s Xcode, but I have followed the Xcode documentation and the advice of a few related questions without success.
I installed GMP to
I have updated my system from snow leopard to mountain lion and had to install gmp.
First of all I have installed Xcode CommandLineTools set.
Secondly, installed Homebrew. Then with it I have done steps in this topic: https://apple.stackexchange.com/questions/38222/how-do-i-install-gcc-via-homebrew
In my last step, made changes to an xcode project as colleague Marcus Karlsson told. It's finally working! Very big Thank You :)