dev-ruby/ruby-inline
rubyinline | software projects | by ryan davis
RubyのコードにC/C++を組み込めるとな
$ sudo emacs /etc/portage/package.keywords dev-ruby/ruby-inline ~x86 dev-ruby/hoe ~x86 dev-ruby/rake ~x86 dev-ruby/rubyforge ~x86
$ sudo emerge -av ruby-inline