On Wed, 2011-12-07 at 19:59 +0100, Torbjorn Granlund wrote: > Please try this version: > > http://gmplib.org:8000/gmp/file/018161d99ceb/config.guess > This fails immediately. The 5.0.2 distrubution version of config.guess gets further. I have an ASUS P9X79 motherboard + an Intel i7-3930K. tomdean