Hi all,

I have successfully installed ffi-0.5.0. But when I tried require
'ffi' in irb, it reported LoadError: no such file to load -- ffi. I
have no idea why this happens.

Actually, the installation process was not so smooth either. When I
tried sudo gem install ffi, it reported such an error:

rake RUBYARCHDIR=/var/lib/gems/1.8/gems/ffi-0.5.0/lib RUBYLIBDIR=/var/
lib/gems/1.8/gems/ffi-0.5.0/lib
sh: rake: command not found

but I found this post (http://bugs.debian.org/cgi-bin/bugreport.cgi?
bug=529663), added a symbolic link to rake in /usr/bin, and solved the
installation problem. I am not sure if this is also a bug of RubyGem
on Ubuntu.

However, the require command can not find 'ffi' even though I tried
both of the two ways of ffi installation (directly gem install and the
git way mentioned in this post:
http://groups.google.com/group/ruby-ffi/browse_thread/thread/e46d8a6a71a0ff0f).

Any suggestions? e.g. how can I check if the 'ffi' is in the list that
ruby require command can find?

BTW: i just tried the require 'ffi' in /var/lib/gems/1.8/gems/
ffi-0.5.0/lib with irb, it worked. but in other directories, no.

Thanks a lot!