Installing http_parser.rb (0.6.0) error

When trying to run bundle after adding the twitter gem I’m receiving an error that it couldn’t build the gem http_parser.rb -v ‘0.6.0’

I’m running Mavericks – anybody else running into this issue?

There was an issue with my Xcode command line tools – solved by installing apple-gcc42. Found answer on StackOverflow ruby - OS X Mountain Lion: gcc-4.2 No such file or directory - Stack Overflow

Bundle works fine now