Fixing 'Mkmf' Load Error in Ubuntu Feb 2nd, 2013 | Comments After a while I sat down to set up my Ruby environment on my new ubuntu laptop for octopress. I haven’t blogged for a few months. And I haven’t really needed ruby in a few months either. So for octopress I had to set up rvm, rake and all the ruby gems. But while installing RedCloth gem (RedCloth gem is needed for markup processing in Octo