[Pythonmac-SIG] python 2.6 on mac seems to break compatibility

[Mark Bestley]

On Fri, 24 Oct 2008 12:29:09 +0100, Rodrigo Ventura <yoda at isr.ist.utl.pt>  
wrote:

>
> I'm having difficulty on compiling PIL on Leopard. PIL used to compile  
> just fine with the system's python (2.5.1 I believe), but with macpython  
> 2.6 it breaks.
>
> First of all, I get lots of warnings after almost all gcc calls during  
> compilation that I did't get before. Sample example:
>
>
> gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk - 
> fno-strict-aliasing -fno-common -dynamic -DNDEBUG -g -O3 -DHAVE_LIBJPEG  
> -DHAVE_LIBZ -I/System/Library/Frameworks/Tcl.framework/Headers  
> -I/System/Library/Frameworks/Tk.framework/Headers -I/opt/local/ 
> include/freetype2 -IlibImaging -I/opt/local/include -I/Library/ 
> Frameworks/Python.framework/Versions/2.6/include -I/usr/include -I/ 
> Library/Frameworks/Python.framework/Versions/2.6/include/python2.6 -c  
> libImaging/RawDecode.c -o build/temp.macosx-10.3-i386-2.6/libImaging/ 
> RawDecode.o
> In file included from /usr/include/math.h:26,
>                  from /Library/Frameworks/Python.framework/Versions/ 
> 2.6/include/python2.6/pyport.h:235,
>                  from /Library/Frameworks/Python.framework/Versions/ 
> 2.6/include/python2.6/Python.h:58,
>                  from libImaging/ImPlatform.h:10,
>                  from libImaging/Imaging.h:14,
>                  from libImaging/RawDecode.c:17:
> /usr/include/architecture/ppc/math.h:675: warning: conflicting types for  
> built-in function 'scalb'
>
>

I see /opt/local on your paths - This is from macports - probably a good  
idea to remove that from your INCLUDE


>
>
> gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g - 
> bundle -undefined dynamic_lookup build/temp.macosx-10.3-i386-2.6/ 
> _imagingtk.o build/temp.macosx-10.3-i386-2.6/Tk/tkImaging.o -L/opt/ 
> local/lib -L/usr/local/lib -L/Library/Frameworks/Python.framework/ 
> Versions/2.6/lib -L/usr/lib -o build/lib.macosx-10.3-i386-2.6/ 
> _imagingtk.so -framework Tcl -framework Tk
> ld: in /opt/local/lib/libz.1.dylib, file is not of required architecture  
> for architecture ppc
> collect2: ld returned 1 exit status
> lipo: can't open input file: /var/folders/gO/gOEfKG2kElSEfJYMJH7ijU++ 
> +TI/-Tmp-//ccpZdO98.out (No such file or directory)
> error: command 'gcc' failed with exit status 1
>

I think this is a macports issue. macports builds as one architecture only
The /opt/local/lib/libz.1.dylib is a macports file and your compile  
command line is for ppc and i386

I would either remove macports from your paths or do your build as one  
arhitecture only. Or use macports for everything.

-- 
Mark