--- gcc/objc/objects.c	2018/04/24 18:10:16	1.1.1.1
+++ gcc/objc/objects.c	2018/04/24 18:13:39	1.1.1.2
@@ -24,6 +24,7 @@ You should have received a copy of the G
    however invalidate any other reasons why the executable file might be
    covered by the GNU General Public License.  */
 
+#include "../tconfig.h"         /* include defs of bzero for target */
 #include "runtime.h"		/* the kitchen sink */
 
 id __objc_object_alloc(Class*);