Building python packages for the correct architecture on OSX 10.5

[Arnaud Delobelle]

Hi fellow python enthusiasts.

Having recently acquired a MacBook Pro (Intel Core 2 Duo) which comes
with python2.5, I have been installing some modules that I need (PIL,
psycopg2, PyXML ...).

The problem is that [$python setup.py build] compiles all the binaries
to universal files for i386 and ppc32, but not x86_64 or ppc64.  It
does not appear to be a problem when running scripts from the shell
(as python seems to run as a 32 bits problems), but it is a problem
from apache2/mod_python as the included apache2 runs as 64 bits
processes.

This means the modules need to be compiles for at least both i386 and
x86_64 in my case.  I have been looking at the setup.py files of
various modules but I cannot see a suitable way to indicate what
architectures I want them compiled for.  So far, I have managed by
adding the following lines in setup.py just after the Extension class
is imported:

OrigExtension = Extension
def Extension(*args, **kwargs):
   extra_args = ['-arch', 'ppc', '-arch', 'ppc64',
          '-arch', 'i386', '-arch', 'x86_64 ']
   kwargs['extra_compile_args'] = extra_args +
kwargs.get('extra_compile_args', [])
   kwargs['extra_link_args'] = extra_args +
kwargs.get('extra_link_args', [])
   return OrigExtension(*args, **kwargs)


Obviously this is a dirty hack, and I would like to know how to do
this the right way.  How can this be done better?

--
Arnaud