OMG! It’s been a year since I posted Writing Ruby C Extensions: Part 1. The first post I did was for the Ruby Advent Calendar in 2009. I guess it’s fitting that I write a blog post for the Ruby Advent Calendar 2010. Anyway, if you haven’t read part 1, please go read it now. In Part 2, we’ll modify our extconf.rb file to find important files in libstree, then we’ll create a Ruby class that is backe