--- config.sub.old	1999-12-30 12:37:48.000000000 +0100
+++ config.sub.new	2006-05-23 09:42:54.000000000 +0200
@@ -502,6 +502,9 @@ case $basic_machine in
 	pentiumii-* | pentium2-*)
 		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
+	x86_64-*)
+		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
 	pn)
 		basic_machine=pn-gould
 		;;