Hello,

I just tried to run the hello world program of GitHub but encountered
an error message on which I could not find any further information.
Does anybody have a suggestion which actions to take?

I am running Mac OS 10.5.8.

Cheers, Stefan

stefan@StefanMBP15:~/Desktop$ ruby -v
ruby 1.8.7 (2010-01-10 patchlevel 249) [i686-darwin9]

stefan@StefanMBP15:~/Desktop$ gem list

*** LOCAL GEMS ***

ffi (0.6.2)
rake (0.8.7)
rake-compiler (0.7.0)
rb-kqueue (0.1.0)
yard (0.5.3)

stefan@StefanMBP15:~/Desktop$ cat helloworld.rb
require 'rubygems'
require 'ffi'

 module MyLib
   extend FFI::Library
   attach_function :puts, [ :string ], :int
 end

 MyLib.puts 'Hello boys using libc!'

stefan@StefanMBP15:~/Desktop$ ruby helloworld.rb
/opt/local/lib/ruby/gems/1.8/gems/ffi-0.6.2/lib/ffi/library.rb:79:in
`ffi_libraries': no library specified (LoadError)
	from /opt/local/lib/ruby/gems/1.8/gems/ffi-0.6.2/lib/ffi/library.rb:
106:in `attach_function'
	from helloworld.rb:6