Building M2Crypto-0.17 on MacOS X

Hi,

I've been struggling all day to get a working version of M2Crypto-0.17 
that I can distribute with an application built on MacOS X, using py2app. 
Following all of the instructions in INSTALL, I can build an extension 
for i386, but the Universal build fails.

I see this at the end of the build step:

gcc -arch i386 -arch ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -g -bundle -undefined dynamic_lookup build/temp.macosx-10.3-fat-2.5/SWIG/_m2crypto_wrap.o -L/usr/local/lib -lssl -lcrypto -o build/lib.macosx-10.3-fat-2.5/M2Crypto/__m2crypto.so
/usr/bin/ld: for architecture ppc
/usr/bin/ld: warning /usr/local/lib/libssl.dylib cputype (7, architecture i386) does not match cputype (18) for specified -arch flag: ppc (file not loaded)
/usr/bin/ld: warning /usr/local/lib/libcrypto.dylib cputype (7, architecture i386) does not match cputype (18) for specified -arch flag: ppc (file not loaded)

I have followed all of the instructions in the INSTALL file (both for 
openssl-0.98d and for M2Crypto-0.17).  I downloaded and installed the most 
recent Xcode release, corrected the openssl Makefiles for the linker 
problem, gave a --prefix argument everywhere, and upgraded to Python-2.5.

Any hints or suggestions?

Thanks,
-M