Compilation stopped and complained about not finding gc.h. Trying to find a quick solution, I hardcoded /usr/include/gc to genc.py at line 108. With that I get an healthy looking >>>>. I don't think it should be like that. I also get this warning, incase you have missed it: """ In file included from /usr/include/python2.4/Python.h:8, from /home/drayko/Workfolder/Security/Python/cvs/pypy-dist/pypy/translator/c/src/g_prerequisite.h:12, from testing_1.c:4: /usr/include/python2.4/pyconfig.h:832:1: warning: "_POSIX_C_SOURCE" redefined In file included from /usr/include/gc/gc.h:472, from testing_1.c:2: /usr/include/features.h:190:1: warning: this is the location of the previous definition """