diff --git a/loop-rebuild b/loop-rebuild
index c30ee4a049..82d3dafd54 100755
--- a/loop-rebuild
+++ b/loop-rebuild
@@ -19,7 +19,8 @@ do
 		ssleep 300
 	done
 	ssleep 30
-	time nice -20 Meta/Dothem -j32 --sha256 --leaks --san; uptime; date
+	# opts --sha256 --leaks --san
+	time nice -20 Meta/Dothem -j32 --dash -- -- CC=clang; uptime; date
 	P=$(stamp)
 	Meta/V
 done