Hi, I get the following configuration error message when configuring GCC 4.8 on an x86_64 suystem running Scientific linux 6.2. checking for the correct version of gmp.h... yes checking for the correct version of mpfr.h... yes checking for the correct version of mpc.h... yes checking for the correct version of the gmp/mpfr/mpc libraries... no configure: error: Building GCC requires GMP 4.2+, MPFR 2.4.0+ and MPC 0.8.0+. Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify Although the version check for the .h files succeeds, the library check fails. The installed version are required libraries: gmp-4.3.1-7.el6_2.2.x86_64 mpfr-2.4.1-6.el6.x86_64 mpc-0.8.2 I've tried with both ./configure and /configure --with-gmp=/usr/lib64 --with-mpfr=/usr/lib64 --with-mpc=/usr/local/lib Any guidance would be appreciated. Thanks, Ron -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ron Stubbs MS CS Senior Systems Programmer Research Computing Pratt School of Engineering 410 Teer Bldg. P.O. Box 90271 Duke University, Durham, N.C. 27708-0271 office: (919)660-5339 cell:(919)641-5689 fax: (919) 613-9156 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~