Index: driver/cfa.cc
===================================================================
--- driver/cfa.cc	(revision e8c52cf03237e8eb838f2de7d6a65626299a417b)
+++ driver/cfa.cc	(revision c8c0c7c5291339c09222f6f42efd7ecbcf3e63cb)
@@ -401,4 +401,6 @@
 		args[nargs++] = "-Xlinker";
 		args[nargs++] = "--undefined=__cfaabi_appready_startup";
+		args[nargs++] = "-z";
+		args[nargs++] = "execstack";
 
 		// include the cfa library in case it is needed