On Friday 23 April 2004 15:54, Neal D. Becker wrote: > What setting of -mcpu=CPU-TYPE is best for x86_64? Is this the same as > "athlon-4"? > > (It would be helpful if the gcc info explained these terms) In recent versions of gcc they are: http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86-64-Options.html#i386%20and% 20x86-64%20Options Paul