--- cl-original/tools/ccopts.sh	2017-02-11 18:35:50.168805668 +0100
+++ cl-patched/tools/ccopts.sh	2017-02-11 18:39:04.861202195 +0100
@@ -471,7 +471,7 @@
 				CCARGS="$CCARGS -march=pentium" ;;
 		esac ;
 	else
-		CCARGS="$CCARGS -mcpu=pentium" ;
+		CCARGS="$CCARGS -march=native" ;
 	fi ;
 fi