I've just tried setting up a new development machine and I'm stuck installing the ffi
gem for ruby.

According to a bug I found (can't find it now I'm afraid) the gentoo devs do not
support installing gems via the gem command and directed the user to use the
dev-ruby/ffi package. Unfortnately, that package is absolutely ancient and unusable.

Anyway, I've got the ffi library install from portage, but when I try to `gem install
ffi`, I get the output seen in the attachement.

The same gem installs just fine on an ubuntu box, but...well it's ubuntu and I don't
want to use that (besides it's just a VM).

I'd really like to get this fixed so I can get started on a new project.

Grateful for any help

Matt