From: Nit Khair <sentinel.2001@...>
Date: 2008-11-04T20:04:01+09:00
Subject: Re: Roguelike project?

Charles Oliver Nutter wrote:
> Nit Khair wrote:
>> Nit Khair wrote:
>> 
>>>> NameError: uninitialized constant FFI::Platform::ARCH_
>>> Or maybe it does not work on OS X yet.
>> 
>> It supports "darwin", but not the "powerpc" cpu.
> 
> Probably just some missing build flags; libffi, on which it's based,
> does support Darwin on PPC.
> 
> Jump on Ruby-FFI lists if you think you can help debug and get it 
> working:
> 
> http://kenai.com/projects/ruby-ffi
> 
> - Charlie

The problem comes here (line 28 of platform.rb).
    ARCH = case CPU.downcase
    when /i?86|x86|i86pc/
      "i386"
    when /amd64|x86_64/
      "x86_64"
    else
28.      raise FFI::PlatformError, "Unknown cpu architecture: #{ARCH_}"
    end

When i checked my rbconfig.rb I have "powerpc" as the "host_cpu".

So, I changed platform.rb to :

-    when /i?86|x86|i86pc/
+    when /i?86|x86|i86pc|powerpc/

... and now your sample works fine! Thanks.

Forgive me for being spoilt, but is there some script that takes a 
header file, or C source and generates the attach_function lines ?
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