Hi, I get the following errors when building gcc-4.8-20120812: ====================================== fortran/arith.o: In function `gfc_mpfr_to_mpz(__mpz_struct*, __mpfr_struct*, locus*)': arith.c:(.text+0x1169): undefined reference to `mpfr_get_z_2exp' collect2: error: ld returned 1 exit status make[3]: *** [f951] Error 1 ======================================== Suggestions? 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 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~