Formerly main.c.~89~

diff --git a/main.c b/main.c
index f03801f36a422c2bb6cf6287f5d44ccabebadd4d..9c36a27d1097d84513133c0986ad3ef208f13118 100644 (file)
--- a/main.c
+++ b/main.c
@@ -49,35 +49,7 @@ static void log_working_directory ();
 static void print_data_base (), print_version ();
 static void decode_switches (), decode_env_switches ();
 static void define_makeflags ();
-
-
-#if 0 /* dummy tag */
-flags () {}
-#endif
-/* Flags:
- *     -b ignored for compatibility with System V Make
- *     -C change directory
- *     -d debug
- *     -e env_overrides
- *     -f makefile
- *     -i ignore_errors
- *     -j job_slots
- *     -k keep_going
- *     -l max_load_average
- *     -m ignored for compatibility with something or other
- *     -n just_print
- *     -o consider file old
- *     -p print_data_base
- *     -q question
- *     -r no_builtin_rules
- *     -s silent
- *     -S turn off -k
- *     -t touch
- *     -v print version information
- *     -w log working directory
- *     -W consider file new (with -n, `what' if effect)
- */
-
+\f
 /* The structure that describes an accepted command switch.  */
 
 struct command_switch
@@ -222,6 +194,11 @@ static struct stringlist *new_files = 0;
 /* If nonzero, we should just print usage and exit.  */
 
 static int print_usage_flag = 0;
+
+/* If nonzero, we should print a warning message
+   for each reference to an undefined variable.  */
+
+int warn_undefined_variables_flag;
 \f
 /* The table of command switches.  */
 
@@ -303,6 +280,9 @@ static const struct command_switch switches[] =
     { 'W', string, (char *) &new_files, 0, 0, 0, 0, 0,
        "what-if", "FILE",
        "Consider FILE to be infinitely new" },
+    { 2, flag, (char *) &warn_undefined_variables_flag, 1, 1, 0, 0, 0,
+       "warn-undefined-variables", 0,
+       "Warn when an undefined variable is referenced" },
     { '\0', }
   };