Why can't I install Rails on Lion using RVM?

Question

I\'m running into issues trying to install Rails on OS X Lion using RVM.

So far, I have done the following:

1. Installed Mac OS X Lion Version 10.7 (Build

Answer 1

Instead of "export CC=/usr/bin/gcc-4.2" do "export CC=gcc" (xCode 4.2.x should be installed).