Well, I've simply installed mpfr on a separate location (prior to installing gcc of course) with the --prefix=/u/lni/mpfr/2.4.1/powerpc-unknown-linux-gnu/ option. Did I miss anything? David. ________________________________________ From: Tim Prince [TimothyPrince@xxxxxxxxxxxxx] Sent: Thursday, March 19, 2009 8:52 PM To: David Saada Cc: gcc-help@xxxxxxxxxxx Subject: Re: Problem building gcc 4.3.3 on a YDL ppc64 machine David Saada wrote: > . > /usr/bin/ld: skipping incompatible /u/lni/mpfr/2.4.1/powerpc-unknown-linux-gnu//lib/libmpfr.so when searching for -lmpfr > /usr/bin/ld: skipping incompatible /u/lni/mpfr/2.4.1/powerpc-unknown-linux-gnu//lib/libmpfr.a when searching for -lmpfr > ______________________ Wouldn't the 64-bit libraries go in a /lib64/ directory?