-extern int getopt_long ();
-extern int getopt_long_only ();
-
-extern int _getopt_internal ();
+extern int getopt_long (int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind);
+extern int getopt_long_only (int __argc, char *const *__argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind);
+extern int _getopt_internal (int __argc, char *const *__argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only);