yes i tried with also: /configure --prefix=/pkg/gcc-4.4.1/ --with-mpfr=/pkg/mpfr-2.4.1 --with-gmp=/pkg/gmp-4.2.4 http://sage.math.washington.edu/home/novocin/mpfr-2.3.2/INSTALL -> This page has something related to this i think ... but i'm not able to get what they want to say .... they are talking about setting some environment variables n all > Had you tried this? > ./configure --prefix=/pkg/gcc-4.4.1/ > --with-mpfr=/pkg/mpfr-2.4.1 > --with-gmp=/pkg/gmp-4.2.4 Ankit Mahanot