The pointer is http://www.physik.fu-berlin.de/~tburnus/gcc-trunk/ and you probably need both http://www.lps.ens.fr/~dominiq/gmp/libgmp.so.3.bz2 and http://www.lps.ens.fr/~dominiq/gmp/libmpfr.so.1.bz2 Good luck Dominique