[Pythonmac-SIG] Using Python 2.5 on Snow Leopard

[Bill Janssen]

Brad Howes <howes at ll.mit.edu> wrote:

> On Sep 11, 2009, at 1:50 PM, Bill Janssen wrote:
> 
> > I was happy to see that Python 2.5 still shipped with SL, but now I'm
> > less happy.  I can't seem to compile PIL for Python 2.5 on Snow
> > Leopard.
> >
> > The problem is that when I build and install libjpeg or libpng, it
> > builds 64-bit libraries, but Python 2.5 is 32-bit, so the libraries
> > don't work when PIL tries to use them.  You get an error message
> > something like this:
> 
> 
> Can you try recompiling with "-arch i386 -arch x86_64" options in the
> CFLAGS? I think I had gotten this to work for some other libraries
> when I ran into the dreaded linking problem. You might instead need to
> do CC="gcc -arch..." if the configure tool munges the CFLAGS too much.
> 
>     % CFLAGS="-arch i386 -arch x86_64" ./configure ...
> 
> or
> 
>     % CC="gcc -arch..." ./configure ...
> 
> Brad

Thanks, Brad, I've tried this.  It does build the .a files multi-platform,
but not the dylib files.  And some libraries, like libpng, use -M switches
which conflict with multiple architecture flags on the compile line.

Bill