Rob Seaman

Dec. 19, 2008 Update: This post covers setting up and switching the default Ruby installation in /usr/local. If you're looking for a more dynamic way to test and/or switch between Ruby versions see Switching Between Ruby 1.8 & 1.9 with multiruby.

I had originally installed Ruby 1.8.6 on Tiger from source using Dan Benjamin's Building Ruby, Rails, Subversion, Mongrel, and MySQL on Mac OS X instructions. I upgraded to Leopard but continued to run the /usr/local version of Ruby. It has been working fine for me but for various reasons I decided it was time to upgrade to 1.8.7. I was happy to see Dan had created updated instructions for Leopard in his Installing Ruby, Rubygems, Rails, and Mongrel on Mac OS X 10.5 (Leopard) post. So I decided that I'd just install over my 1.8.6 version. It didn't go off without a hitch, I ran into a problem compiling readline. This post documents what worked to resolve the problem, my journey back to 1.8.6, how to add 1.9 support and how to switch between versions. Read the rest of this entry