--- /dev/null
+--- a/config/config.sub
++++ b/config/config.sub
+@@ -380,6 +380,9 @@ case $basic_machine in
+ amd64)
+ basic_machine=x86_64-pc
+ ;;
++ amd64-*)
++ basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
++ ;;
+ amdahl)
+ basic_machine=580-amdahl
+ os=-sysv