--- gcc/config/xm-svr3.h	2018/04/24 17:51:30	1.1
+++ gcc/config/xm-svr3.h	2018/04/24 18:20:23	1.1.1.2
@@ -1,5 +1,5 @@
 /* Configuration for GNU C-compiler for hosts running System V Release 3
-   Copyright (C) 1991 Free Software Foundation, Inc.
+   Copyright (C) 1991, 1993 Free Software Foundation, Inc.
 
 This file is part of GNU CC.
 
@@ -25,6 +25,7 @@ the Free Software Foundation, 675 Mass A
 #define index strchr
 
 #define USG
+#define HAVE_VPRINTF
 
 #ifndef SVR3
 #define SVR3