--- flags.h.orig	Wed Dec 31 05:02:33 1997
+++ flags.h	Wed Mar 31 00:08:39 1999
@@ -125,6 +125,10 @@
 
 extern int warn_aggregate_return;
 
+/* Nonzero means that -Wformat accepts certain non-ANSI formats.  */
+
+extern int flag_format_extensions;
+
 /* Nonzero if generating code to do profiling.  */
 
 extern int profile_flag;
@@ -215,6 +219,20 @@
    This is generally not a win.  */
 
 extern int flag_unroll_all_loops;
+
+/* Nonzero forces all invariant computations in loops to be moved
+   outside the loop. */
+
+extern int flag_move_all_movables;
+
+/* Nonzero forces all general induction variables in loops to be
+   strength reduced. */
+
+extern int flag_reduce_all_givs;
+
+/* Nonzero gets another run of loop_optimize performed. */
+
+extern int flag_rerun_loop_opt;
 
 /* Nonzero for -fcse-follow-jumps:
    have cse follow jumps to do a more extensive job.  */