Add kqueue support

* configure.ac (--with-file-notification): Add kqueue.
(top): Remove special test for "${HAVE_NS}" and
${with_file_notification}, this is handled inside gfilenotify
tests.  Add kqueue tests.  Use NOTIFY_CFLAGS and NOTIFY_LIBS
instead of library specific variables.

* src/Makefile.in: Use NOTIFY_CFLAGS and NOTIFY_LIBS.

* src/emacs.c (main): Call globals_of_kqueue and syms_of_kqueue.

* src/kqueue.c: New file.

* src/lisp.h: Declare extern globals_of_kqueue and syms_of_kqueue.

1 files changed, 11 insertions, 5 deletions

diff --git a/src/lisp.h b/src/lisp.h
index 3efa492e0e8..426b6c949e9 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -4257,17 +4257,23 @@ extern void init_font (void);
 extern void syms_of_fontset (void);
 #endif
 
+/* Defined in inotify.c */
+#ifdef HAVE_INOTIFY
+extern void syms_of_inotify (void);
+#endif
+
+/* Defined in kqueue.c */
+#ifdef HAVE_KQUEUE
+extern void globals_of_kqueue (void);
+extern void syms_of_kqueue (void);
+#endif
+
 /* Defined in gfilenotify.c */
 #ifdef HAVE_GFILENOTIFY
 extern void globals_of_gfilenotify (void);
 extern void syms_of_gfilenotify (void);
 #endif
 
-/* Defined in inotify.c */
-#ifdef HAVE_INOTIFY
-extern void syms_of_inotify (void);
-#endif
-
 #ifdef HAVE_W32NOTIFY
 /* Defined on w32notify.c.  */
 extern void syms_of_w32notify (void);