[Python-Dev] python, lipo and the future?

Ronald Oussoren ronaldoussoren at mac.com
Sun Sep 17 21:56:21 CEST 2006

On Sep 17, 2006, at 9:37 PM, Jack Howarth wrote:

> Martin,
>     I believe if you use the Xcode project management the
> Universal binary creation is automated. Currently they
> support the i386/ppc binaries but once Leopard comes
> out you will see i386/x86_64/ppc/ppc64 binaries for
> shared libraries.

That's not really relevant for python, python is build using  
makefiles not using a Xcode project (and I'd like to keep it that way).

BTW. Xcode 2.4 can already build 4-way universal binaries, Tiger  
supports 64-bit unix programs. On my system file /usr/lib/ 
libSystem.B.dylib (the unix/C library) says:
$ file /usr/lib/libSystem.B.dylib
/usr/lib/libSystem.B.dylib: Mach-O universal binary with 3 architectures
/usr/lib/libSystem.B.dylib (for architecture ppc64):    Mach-O 64-bit  
dynamically linked shared library ppc64
/usr/lib/libSystem.B.dylib (for architecture i386):     Mach-O  
dynamically linked shared library i386
/usr/lib/libSystem.B.dylib (for architecture ppc):      Mach-O  
dynamically linked shared library ppc

On the new Mac Pro's and probably the Core2 based iMac's as well  
libSystem also contains a x86-64 version.


>              Jack

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