--- cl-original/tools/ccopts.sh	2026-05-09 21:01:53.878671817 +0200
+++ cl-patched/tools/ccopts.sh	2026-05-09 21:25:53.461334096 +0200
@@ -1262,7 +1262,7 @@
 		if [ $GENERICBUILD -gt 0 ] ; then
 			echo "  (Enabling lowest-common-denominator build options for cross-platform library)." >&2 ;
 		else
-			CCARGS="$CCARGS -march=x86-64-v3" ;
+			CCARGS="$CCARGS -m64" ;
 		fi
 	elif [ "$COMPILER_VER" -ge 45 ] ; then
 		if [ $GENERICBUILD -gt 0 ] ; then
