Mac OS Cross-compiling

[Ryan Govostes <rgovostes@gmail.com>]

I use a PPC Mac but I've needed to build libpari for i386-based Macs,  
too.  Unfortunately, it required a bit of tweaking to get this to  
work. I think the configure script needs to be updated so that these  
changes aren't necessary.

I haven't tested the reverse process (building for PPC on an i386 Mac).

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config/arch-osname always returns the current computer's architecture  
and OS type, even if the user specifies a different host via the -- 
host option on the configuration script.

In order to build for i386-darwin, I replaced this file with a single  
line:

echo i386-darwin

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./Configure --host=i386-darwin

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Now the CC_FLAVOR variable has to be changed in the Odarwin-i386/ 
Makefile. First, you have to specify the architecture to build for,  
and also the SDK root for all system files.

CC_FLAVOR  = -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk

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Continue building as regular...

Regards,
Ryan Govostes