--- setup.py.orig 2012-05-24 14:55:30.000000000 +0200 +++ setup.py 2012-09-08 15:11:23.877847202 +0200 @@ -371,7 +371,7 @@ # _fastmath (uses GNU mp library) Extension("Crypto.PublicKey._fastmath", include_dirs=['src/','/usr/include/'], - libraries=['gmp'], + libraries=['gmp','m'], sources=["src/_fastmath.c"]), # Hash functions