`gem install therubyracer` fails on Mac OS X Lion

Question

I would appreciate some help in getting gem install therubyracer to work. Here is the error:

$ gem install therubyracer
Building native extensio         


        

Answer 1

This worked for me:

$ gem uninstall libv8
$ gem install therubyracer

(A big thanks to http://www.ruby-forum.com/topic/4306127)