diff --git a/gcc/config/sh/xm-sh.h b/gcc/config/sh/xm-sh.h
index 148ff57267a..a6b9424f4ff 100644
--- a/gcc/config/sh/xm-sh.h
+++ b/gcc/config/sh/xm-sh.h
@@ -31,6 +31,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #define alloca __builtin_alloca
 #endif
 
+/* We have the vprintf function.  */
+#define HAVE_VPRINTF 1
+
 /* target machine dependencies.
    tm.h is a symbolic link to the actual target specific file.  */
 #include "tm.h"