Sorry, the command looked terrible. Here they are again:
new-host:python daviddreisigmeyer$ rm *.o *.so server.c server_.c server_setup.cnew-host:python daviddreisigmeyer$ gsc -link server.scm
new-host:python daviddreisigmeyer$ gcc -I/usr/local/Gambit-C/include/ -I/Users/daviddreisigmeyer/Programming/python -Wno-unused -O1 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC -fno-common -mieee-fp -c -o client.o client.c
new-host:python daviddreisigmeyer$ gcc -I/usr/local/Gambit-C/include/ -I/Users/daviddreisigmeyer/Programming/python -Wno-unused -O1 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC -fno-common -mieee-fp -c -o server.o server.c -D___LIBRARY
new-host:python daviddreisigmeyer$ gcc -I/usr/local/Gambit-C/include/ -I/Users/daviddreisigmeyer/Programming/python -Wno-unused -O1 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fPIC -fno-common -mieee-fp -c -o server_.o server_.c -D___LIBRARY
new-host:python daviddreisigmeyer$ gcc -shared -I/usr/local/Gambit-C/include/ -I/Users/daviddreisigmeyer/Programming/python -L/usr/local/Gambit-C/lib/ -lgambc -Wno-unused -O1 -fno-math-errno -fschedule-insns2 -fno-trapping-math -fno-strict-aliasing -fwrapv -fomit-frame-pointer -fno-common -mieee-fp -o libclient.so client.o server.o server_.o
new-host:python daviddreisigmeyer$ python server_setup.py build_ext --inplacerunning build_ext cythoning server_setup.pyx to server_setup.c building 'cython_gambit_test' extension /usr/bin/gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -pipe -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/usr/local/Gambit-C/include -I/Users/daviddreisigmeyer/Programming/python -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c server_setup.c -o build/temp.macosx-10.6-x86_64-2.7/server_setup.o /usr/bin/gcc-4.2 -L/opt/local/lib -bundle -undefined dynamic_lookup -L/opt/local/lib build/temp.macosx-10.6-x86_64-2.7/server_setup.o -L/usr/local/Gambit-C/lib -L/Users/daviddreisigmeyer/Programming/python -lclient -lgambc -o /Users/daviddreisigmeyer/Programming/python/cython_gambit_test.so