Porting a Processing (32bit) library from Windows to Mac (64bit)

Some months ago I developed a library in Windows for Processing (http://code.google.com/p/touchatag-processing/). It basically allows users to work with touchatag RFID readers and tags on the Processing environment.
For the last couple of days I've been trying to port it to Mac, but I've run into some problems regarding system architecture. My library heavily relies on libnfc (http://www.libnfc.org/), which is compiled as x86_64. Since Processing runs as a 32 bit application, I'm getting this error:
+processing.app.debug.RunnerException: UnsatisfiedLinkError: /Users/augustoesteves/Documents/Processing/libraries/touchatag/library/libnfc.d ylib: no suitable image found.+
+Did find: /Users/augustoesteves/Documents/Processing/libraries/touchatag/library/libnfc.d ylib: mach-o, but wrong architecture+
I've tried following the instructions found here:
http://discussions.apple.com/thread.jspa?messageID=10497361
But since libnfc relies on libusb, I still get errors with Make:
sudo make CFLAGS='-arch i686' LDFLAGS='-arch i686' CC='gcc -m32' CXX='g++ -m32'
+ld: warning: in /usr/local/Cellar/libusb-compat/0.1.3/lib/libusb.dylib, file was built for unsupported file format which is not the architecture being linked (i386)+

Rorsch wrote:
Yes, I understand the problem, I can't have mixtures. But how do I compile libnfc if it uses a pre-complied libusb library at 64bits?
You have to rebuild libusb
Unfortunately, libusb seems to have a couple of funky gcc flags. You have to do this the hard way.
env CFLAGS="-arch i386" ./configure; make
mv libusb/.libs/libusb-1.0.0.dylib /tmp/libusb-1.0.0.dylib.i386
make clean
env CFLAGS="-arch x86_64" ./configure; make
mv libusb/.libs/libusb-1.0.0.dylib /tmp/libusb-1.0.0.dylib.x86_64
lipo -create /tmp/libusb-1.0.0.dylib.i386 /tmp/libusb-1.0.0.dylib.x86_64 -output libusb/.libs/libusb-1.0.0.dylib
Result:
file libusb/.libs/libusb-1.0.0.dylib
libusb/.libs/libusb-1.0.0.dylib: Mach-O universal binary with 2 architectures
libusb/.libs/libusb-1.0.0.dylib (for architecture i386): Mach-O dynamically linked shared library i386
libusb/.libs/libusb-1.0.0.dylib (for architecture x86_64): Mach-O 64-bit dynamically linked shared library x86_64

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I need to transfer an iTunes library from Windows to Mac. .with a catch.

The catch is, I have a Mac formatted iPod, so if I understand correctly, I can't use it as an external drive to take the library from the Windows machine.
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Hi Bruno! Are you Portuguese or Brazilian?
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