--- gcc/config/xm-tower.h	2018/04/24 17:51:30	1.1
+++ gcc/config/xm-tower.h	2018/04/24 18:03:48	1.1.1.2
@@ -1,8 +1,4 @@
 #include "xm-m68k.h"
+#include "xm-svr3.h"
 
-#define USG
 #define HAVE_VPRINTF
-
-#define bcopy(a,b,c) memcpy (b,a,c)
-#define bzero(a,b) memset (a,0,b)
-#define bcmp(a,b,c) memcmp (a,b,c)