On 24 April 2014 04:24, George R Goffe wrote: > I'm running Fedora 19 X86_64 and, as far as I know, building for this architecture. I just built the latest gmp, mpc, mpfr hoping that that was the problem but I still get the msg. It's much simpler just to install them from yum. Running this as root will install the 64-bit and 32-bit devel packages for each: yum install {gmp,mpfr,libmpc}-devel.{x86_64,i686} You might want to uninstall the hand-built packages first, so they don't interfere.