System: Debian 3.0 with some updates gcc package version: 2:2.95.4-14 libc6 package version: 2.2.5-11.2 $ gmp-4.1.1-rc1/config.guess athlon-pc-linux-gnu $ mkdir bin.gmp-4.1.1-rc1 $ cd bin.gmp-4.1.1-rc1 $ ../gmp-4.1.1-rc1/configure --enable-mpfr --enable-assert $ make $ make check $ cd demos $ make allprogs All OK. Pedro Gimeno