gccxml_cc1plus: error: gccxml_builtins.h: No such file or directory
/usr/lib/ruby/gems/1.8/gems/gccxml_gem-0.9.1-x86_64-linux/./gccxml.rb:29:in `parse': Error executing gccxml command line: /usr/lib/ruby/gems/1.8/gems/gccxml_gem-0.9.1-x86_64-linux/bin/gccxml   /home/ngtzeyang/dev/mine/swig/ruby/class/example.cxx -fxml=/home/ngtzeyang/tmp/rbgccxml20090715-14080-3l0862-0 (RuntimeError)
  from /usr/lib/ruby/gems/1.8/gems/rbgccxml-0.8/lib/rbgccxml/parser.rb:43:in `parse'
  from /usr/lib/ruby/gems/1.8/gems/rbgccxml-0.8/lib/rbgccxml/rbgccxml.rb:37:in `parse'
  from ./script.rb:6