On Wed, Feb 17, 2010 at 01:52, Stefan Schmidt <stefan.schmidt@gmail.com> wrote:

> 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
>

Obviously it fails telling you there is no lib specified, the hello
world I see in github is this [0], where did you get that example?

[0] http://github.com/ffi/ffi/blob/master/samples/hello.rb