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

Same problem occurred and I finally solved it. Here are the steps I followed:

• Xcode, Xcode CLT
• sudo xcodebuild -license
• sudo port upgrade outdated
• sudo port install apple-gcc42
• rvm reinstall 1.9.3 #important!

Really, I think just first,second and last steps required, but can not test it.