OSX/Building shared library

Code: GNU/Linux style

gcc -fPIC -shared -o foo.so foo.c

Code: OSX style

gcc -fPIC -dynamiclib -Wl,-undefined,dynamic_lookup -o foo.so foo.c

Code: OSX universal bundle

gcc -fPIC -arch ppc -arch ppc64 -arch i386 -arch x86_64 -bundle -Wl,-undefined,dynamic_lookup -o foo.so foo.c

Autohell issues

If you are using autohell with multiple -arch flags you need to disable the dependency tracker.

Code:

./configure --disable-dependency-tracking