python c extension, problems with dlopen on mac os

Posted by Jason Sundram on Stack Overflow See other posts from Stack Overflow or by Jason Sundram
Published on 2010-05-07T16:46:15Z Indexed on 2010/05/07 16:48 UTC
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Filed under:

python

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python-c-extension

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setup.py

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dlopen

I've taken a library that is distributed as a binary lib (.a) and header, written some c++ code against it, and want to wrap the results up in a python module.

I've done this here.

The problem is that when importing this module on Mac OSX (I've tried 10.5 and 10.6), I get the following error:

dlopen(/Library/Python/2.5/site-packages/dirac.so, 2): Symbol not found: _DisposePtr
  Referenced from: /Library/Python/2.5/site-packages/dirac.so
  Expected in: dynamic lookup

This looks like symbols defined in the Carbon framework aren't being properly resolved, but I'm not sure what to do about that. I am supplying -framework Carbon to distutil.core.Extension's extra_link_args parameter, so I'm not sure what else I should do.

Any help would be much appreciated.

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