+#ifdef HAVE_LIBCHISE
+extern CHISE_DS *default_chise_data_source;
+
+int open_chise_data_source_maybe (void);
+#endif
+
+#if defined(UTF2000) || defined(HAVE_CONCORD)
+extern Lisp_Object Q_denotational;
+extern Lisp_Object Q_denotational_from;
+extern Lisp_Object Q_subsumptive;
+extern Lisp_Object Q_subsumptive_from;
+#endif