More undeclared function fixes and add -Wimplicit-function-declaration.

If a function returns Lisp_Object it must be declared, otherwise on a 64-bit
system, it will return just 32 bits (int).

* configure.in: Use -Wimplicit-function-declaration if compiler supports it.

* src/keyboard.h (poll_for_input_1): Unconditionally declare.

* src/xterm.h (x_get_focus_frame): Declare.

3 files changed, 5 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index bef939adb4f..835fe921019 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,9 @@
 2010-08-06  Jan Djärv  <jan.h.d@swipnet.se>
 
+        * xterm.h (x_get_focus_frame): Declare.
+
+        * keyboard.h (poll_for_input_1): Unconditionally declare.
+
         * nsterm.h (x_set_menu_bar_lines): Declare.
 
         * window.c: Don't include menu.h, it depends on lots of other .h-files.
diff --git a/src/keyboard.h b/src/keyboard.h
index 48d7f1468d9..9ef558fc4e1 100644
--- a/src/keyboard.h
+++ b/src/keyboard.h
@@ -515,9 +515,7 @@ extern void kbd_buffer_store_event (struct input_event *);
 extern void kbd_buffer_store_event_hold (struct input_event *,
                                          struct input_event *);
 extern void kbd_buffer_unget_event (struct input_event *);
-#ifdef POLL_FOR_INPUT
 extern void poll_for_input_1 (void);
-#endif
 extern void show_help_echo (Lisp_Object, Lisp_Object, Lisp_Object,
                             Lisp_Object, int);
 extern void gen_help_event (Lisp_Object, Lisp_Object, Lisp_Object,
diff --git a/src/xterm.h b/src/xterm.h
index 7a35466cb79..69c8ec22a73 100644
--- a/src/xterm.h
+++ b/src/xterm.h
@@ -1058,6 +1058,7 @@ extern Lisp_Object x_property_data_to_lisp (struct frame *,
 /* Defined in xfns.c */
 
 extern struct x_display_info * check_x_display_info (Lisp_Object frame);
+extern Lisp_Object x_get_focus_frame (struct frame *);
 
 #ifdef USE_GTK
 extern int xg_set_icon (struct frame *, Lisp_Object);