--- gcc/toplev.c.orig	Mon Mar 22 15:23:26 1999
+++ gcc/toplev.c	Tue Mar 30 13:13:44 1999
@@ -754,6 +754,9 @@
 
 int flag_no_ident = 0;
 
+/* Nonzero means that -Wformat accepts certain system-dependent formats.  */
+int flag_format_extensions = 0;
+
 /* Table of supported debugging formats.  */
 static struct
 {
@@ -954,6 +957,8 @@
    "Generate code to check every memory access" },
   {"prefix-function-name", &flag_prefix_function_name, 1,
    "Add a prefix to all function names" },
+  {"format-extensions", &flag_format_extensions, 1,
+   "-Wformat accepts certain FreeBSD system-dependent formats" },
   {"dump-unnumbered", &flag_dump_unnumbered, 1,
    "Suppress output of instruction numbers and line number notes in debugging dumps"},
   {"instrument-functions", &flag_instrument_function_entry_exit, 1,