extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree,
int, bool *));
extern void c_common_insert_default_attributes PARAMS ((tree));
-extern int c_common_decode_option PARAMS ((int, char **));
+extern int c_common_handle_option (size_t code, const char *arg, int value);
extern tree c_common_type_for_mode PARAMS ((enum machine_mode,
int));
extern tree c_common_type_for_size PARAMS ((unsigned int, int));
extern tree build_va_arg PARAMS ((tree, tree));
-extern void c_common_init_options PARAMS ((enum c_language_kind));
+extern int c_common_init_options PARAMS ((enum c_language_kind));
extern bool c_common_post_options PARAMS ((const char **));
extern bool c_common_init PARAMS ((void));
extern void c_common_finish PARAMS ((void));