I can't get passed this error. I'm using the latest GMP and MPFR releases. I'm building this on a 10.20 HPUX D Class server. Thank you for any help you can provide me. configure:1963: checking whether the C compiler (gcc ) is a cross-compiler configure:1968: checking whether we are using GNU C configure:1996: checking whether gcc accepts -g configure:2063: checking for gnatbind configure:2128: checking whether compiler driver understands Ada configure:2160: checking how to compare bootstrapped objects configure:2258: checking for correct version of gmp.h configure:2271: gcc -c -g -O2 -I/gen1/lginer/mpfr-2.2.0/include -I/gen1/lginer/gmp-4.2 conftest.c 1>&5 configure:2284: checking for MPFR configure:2297: gcc -o conftest -g -O2 -I/gen1/lginer/mpfr-2.2.0/include -I/gen1/lginer/gmp-4.2 conftest.c -L/gen1/lginer/mpfr-2.2.0/lib -lmpfr /gen1/lginer/gmp-4.2/.libs/libgmp.a 1>&5 /usr/ccs/bin/ld: Can't find library for -lmpfr collect2: ld returned 1 exit status configure: failed program was: #line 2289 "configure" #include "confdefs.h" #include <gmp.h> #include <mpfr.h> int main() { mpfr_t n; mpfr_init(n); ; return 0; } configure:2793: checking for bison configure:2828: checking for bison configure:2863: checking for gm4 configure:2898: checking for flex configure:2933: checking for flex configure:2968: checking for makeinfo Luis E. Giner SI International Senior UNIX Administrator White Sands Missile Range 505-678-2450