[Image-SIG] PIL on Snow Leopard

Bill Janssen janssen at parc.com
Mon Sep 14 17:32:06 CEST 2009

Yes, this just happened to me, too.  If you look at the library, I
suspect you'll find that libjpeg.dylib doesn't have the expected
"architecture".  I had to rebuild libjpeg with gcc 4.2 to get a version
that had the right architecture.


Andy Lei <andylei at gmail.com> wrote:

> I'm trying to reinstall PIL on OS X Snow Leopard, and I'm having some
> issues.  PIL builds and installs fine (selftest.py works fine, and running
> build_ext -i says that jpeg support is okay), but libjpeg is still giving me
> problems.
> In Python (I'm using the default Apple build, version 2.6), when I try to
> import _imaging, or do certain things w/ jpegs, I get the error:
> >>> import _imaging
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ImportError: dlopen(/Library/Python/2.6/site-packages/PIL/_imaging.so, 2):
> Symbol not found: _jpeg_resync_to_restart
>   Referenced from: /Library/Python/2.6/site-packages/PIL/_imaging.so
>   Expected in: flat namespace
>  in /Library/Python/2.6/site-packages/PIL/_imaging.so
> I've tried rebuilding and reinstalling several times, using None for
> JPEG_ROOT, the Apple supplied libjpeg (/usr/local/lib/libjpeg.dylib) as well
> as the fink version (/sw/lib/libjpeg.dylib).
> Anybody have any ideas what I'm doing wrong?
> Thanks everyone!
> Andy
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