The compiler failed to generate an executable file. (RuntimeError)

Question

I recently upgraded to OS Mountain Lion. A project I\'m working on requires gem sys-proctable as a dependency, but when I run bundle install I get:

Answer 1

Because i am sure i will land here again.

My issue was that sudo xcodebuild -license does nothing actually and i had to manually start xcode to agree to their terms to get it working. What a glorious OS.