20 files changed, 175 insertions, 156 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 4db48bbb969..0bd1d6c98a9 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,74 @@
+2012-09-01  Daniel Colascione  <dancol@dancol.org>
+
+        * xterm.h: Add header guards.  Declare x_menubar_window_to_frame.
+        Remove x_set_frame_alpha, x_bitmap_icon, x_make_frame_visible,
+        x_make_frame_invisible, x_iconify_frame, x_free_frame_resources,
+        x_wm_set_size_hint, x_query_colors, x_real_positions,
+        x_set_menu_bar_lines, x_char_width, x_char_height, x_sync,
+        x_set_tool_bar_lines, x_activate_menubar, and free_frame_menubar,
+        all of which have been moved to common code.
+
+        * xfaces.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.
+
+        * w32xfns.c (x_sync): Correct definition of x_sync (a no-op here)
+        to match header.
+
+        * w32term.h (FRAME_X_WINDOW): Use FRAME_W32_WINDOW instead of
+        directly accessing frame internals.
+
+        * w32font.h (w): Include font.h.  Define syms_of_w32font and
+        globals_of_w32font.
+
+        * process.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.
+
+        * nsterm.h: Remove declarations now in frame.h.  Define
+        FRAME_X_SCREEN, FRAME_X_VISUAL.
+
+        * menu.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.
+
+        * keyboard.h: Declare ignore_mouse_drag_p whenever we have a
+        window system.
+
+        * keyboard.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.
+
+        * image.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.  Declare Vlibrary_cache when compiling for
+        Windows.
+
+        * gtkutil.h (xg_list_node_): Include xterm.h to pick up needed
+        window system declarations.
+
+        * frame.h: Move common functions here: set_frame_menubar,
+        x_set_window_size, x_sync, x_get_focus_frame,
+        x_set_mouse_position, x_set_mouse_pixel_position,
+        x_make_frame_visible, x_make_frame_invisible, x_iconify_frame,
+        x_char_width, x_char_height, x_pixel_width, x_pixel_height,
+        x_set_frame_alpha, x_set_menu_bar_lines, x_set_tool_bar_lines,
+        x_activate_menubar, x_real_positions, x_bitmap_icon,
+        x_set_menu_bar_lines, free_frame_menubar, x_free_frame_resources,
+        and x_query_colors.
+
+        * frame.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.
+
+        * font.c: Include TERM_HEADER instead of listing all possible
+        window-system headers.
+
+        * emacs.c: Include TERM_HEADER.
+
+        * dispnew.c (d): Include TERM_HEADER instead of listing all
+        possible window-system headers.
+
+        * ccl.h (c): Include character.h.
+
+        * Makefile.in: Define WINDOW_SYSTEM_OBJ to hold objects needed for
+        the current window system; include in list of objects to link into
+        Emacs.
+
 2012-08-31  Dmitry Antipov  <dmantipov@yandex.ru>
 
         Remove mark_ttys function and fix tty_display_info initialization.
diff --git a/src/Makefile.in b/src/Makefile.in
index 60df1f1c677..a809216f095 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -211,8 +211,8 @@ LIBXMENU=@LIBXMENU@
 
 ## xmenu.o if HAVE_X_WINDOWS, else empty.
 XMENU_OBJ=@XMENU_OBJ@
-## xterm.o xfns.o xselect.o xrdb.o fontset.o xsmfns.o fringe.o image.o
-## xsettings.o xgselect.o if HAVE_X_WINDOWS, else empty.
+## xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o xgselect.o if
+## HAVE_X_WINDOWS, else empty.
 XOBJ=@XOBJ@
 
 TOOLKIT_LIBW=@TOOLKIT_LIBW@
@@ -247,6 +247,9 @@ WIDGET_OBJ=@WIDGET_OBJ@
 ## sheap.o if CYGWIN, otherwise empty.
 CYGWIN_OBJ=@CYGWIN_OBJ@
 
+## fontset.o fringe.o image.o if we have any window system
+WINDOW_SYSTEM_OBJ=@WINDOW_SYSTEM_OBJ@
+
 ## dosfns.o msdos.o w16select.o if MSDOS.
 MSDOS_OBJ =
 ## w16select.o termcap.o if MSDOS && HAVE_X_WINDOWS.
@@ -255,7 +258,6 @@ MSDOS_X_OBJ =
 ns_appdir=@ns_appdir@
 ns_appbindir=@ns_appbindir@
 ns_appsrc=@ns_appsrc@
-## fontset.o fringe.o image.o if HAVE_NS, else empty.
 NS_OBJ=@NS_OBJ@
 ## nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o nsfont.o if HAVE_NS.
 NS_OBJC_OBJ=@NS_OBJC_OBJ@
@@ -340,7 +342,8 @@ base_obj = dispnew.o frame.o scroll.o xdisp.o menu.o $(XMENU_OBJ) window.o \
         process.o gnutls.o callproc.o \
         region-cache.o sound.o atimer.o \
         doprnt.o intervals.o textprop.o composite.o xml.o \
-        $(MSDOS_OBJ) $(MSDOS_X_OBJ) $(NS_OBJ) $(CYGWIN_OBJ) $(FONT_OBJ)
+        $(MSDOS_OBJ) $(MSDOS_X_OBJ) $(NS_OBJ) $(CYGWIN_OBJ) $(FONT_OBJ) \
+        $(WINDOW_SYSTEM_OBJ)
 obj = $(base_obj) $(NS_OBJC_OBJ)
 
 ## Object files used on some machine or other.
diff --git a/src/ccl.h b/src/ccl.h
index 71139175be5..cc5daf11e1c 100644
--- a/src/ccl.h
+++ b/src/ccl.h
@@ -26,6 +26,8 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #ifndef EMACS_CCL_H
 #define EMACS_CCL_H
 
+#include "character.h" /* For MAX_MULTIBYTE_LENGTH */
+
 /* Macros for exit status of CCL program.  */
 #define CCL_STAT_SUCCESS        0 /* Terminated successfully.  */
 #define CCL_STAT_SUSPEND_BY_SRC 1 /* Terminated by empty input.  */
diff --git a/src/dispnew.c b/src/dispnew.c
index 2d232d49c53..cac4c2da4c4 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -47,17 +47,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "syssignal.h"
 
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#endif /* HAVE_X_WINDOWS */
-
-#ifdef HAVE_NTGUI
-#include "w32term.h"
-#endif /* HAVE_NTGUI */
-
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
 
 /* Include systime.h after xterm.h to avoid double inclusion of time.h.  */
 
diff --git a/src/emacs.c b/src/emacs.c
index 7ff5c43dbea..d6e4887292e 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -31,6 +31,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "lisp.h"
 
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
+
 #ifdef WINDOWSNT
 #include <fcntl.h>
 #include <windows.h> /* just for w32.h */
@@ -62,20 +66,12 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "gnutls.h"
 #endif
 
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif
-
 #if (defined PROFILING \
      && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
 # include <sys/gmon.h>
 extern void moncontrol (int mode);
 #endif
 
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#endif
-
 #ifdef HAVE_SETLOCALE
 #include <locale.h>
 #endif
diff --git a/src/font.c b/src/font.c
index 5b9e4f1cfcf..cf9964f08f3 100644
--- a/src/font.c
+++ b/src/font.c
@@ -38,17 +38,9 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "fontset.h"
 #include "font.h"
 
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#endif /* HAVE_X_WINDOWS */
-
-#ifdef HAVE_NTGUI
-#include "w32term.h"
-#endif /* HAVE_NTGUI */
-
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif /* HAVE_NS */
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
 
 Lisp_Object Qopentype;
 
diff --git a/src/frame.c b/src/frame.c
index 4785840a95f..968cb4905a2 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -30,15 +30,11 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "lisp.h"
 #include "character.h"
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#endif
-#ifdef WINDOWSNT
-#include "w32term.h"
-#endif
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif
+
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
+
 #include "buffer.h"
 /* These help us bind and responding to switch-frame events.  */
 #include "commands.h"
@@ -58,11 +54,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "dosfns.h"
 #endif
 
-
-#ifdef HAVE_WINDOW_SYSTEM
-
-#endif
-
 #ifdef HAVE_NS
 Lisp_Object Qns_parse_geometry;
 #endif
diff --git a/src/frame.h b/src/frame.h
index 8587f094a95..76fde8ec96b 100644
--- a/src/frame.h
+++ b/src/frame.h
@@ -1251,10 +1251,40 @@ extern Lisp_Object display_x_get_resource (Display_Info *,
                                            Lisp_Object component,
                                            Lisp_Object subclass);
 
+extern void set_frame_menubar (struct frame *f, int first_time, int deep_p);
+extern void x_set_window_size (struct frame *f, int change_grav,
+                              int cols, int rows);
+extern void x_sync (struct frame *);
+extern Lisp_Object x_get_focus_frame (struct frame *);
+extern void x_set_mouse_position (struct frame *f, int h, int v);
+extern void x_set_mouse_pixel_position (struct frame *f, int pix_x, int pix_y);
+extern void x_make_frame_visible (struct frame *f);
+extern void x_make_frame_invisible (struct frame *f);
+extern void x_iconify_frame (struct frame *f);
+extern int x_char_width (struct frame *f);
+extern int x_char_height (struct frame *f);
+extern int x_pixel_width (struct frame *f);
+extern int x_pixel_height (struct frame *f);
+extern void x_set_frame_alpha (struct frame *f);
+extern void x_set_menu_bar_lines (struct frame *, Lisp_Object, Lisp_Object);
+extern void x_set_tool_bar_lines (struct frame *f,
+                                  Lisp_Object value,
+                                  Lisp_Object oldval);
+extern void x_activate_menubar (struct frame *);
+extern void x_real_positions (struct frame *, int *, int *);
+extern int x_bitmap_icon (struct frame *, Lisp_Object);
+extern void x_set_menu_bar_lines (struct frame *,
+                                  Lisp_Object,
+                                  Lisp_Object);
+extern void free_frame_menubar (struct frame *);
+extern void x_free_frame_resources (struct frame *);
+
 #if defined HAVE_X_WINDOWS && !defined USE_X_TOOLKIT
 extern char *x_get_resource_string (const char *, const char *);
 #endif
 
+extern void x_query_colors (struct frame *f, XColor *, int);
+
 /* In xmenu.c */
 extern void set_frame_menubar (FRAME_PTR, int, int);
 
diff --git a/src/gtkutil.h b/src/gtkutil.h
index 462e879d3e7..c1b6634999f 100644
--- a/src/gtkutil.h
+++ b/src/gtkutil.h
@@ -25,6 +25,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <gtk/gtk.h>
 #include "frame.h"
+#include "xterm.h"
 
 /* Minimum and maximum values used for GTK scroll bars  */
 
diff --git a/src/image.c b/src/image.c
index f2778165ece..c444c986a76 100644
--- a/src/image.c
+++ b/src/image.c
@@ -50,11 +50,19 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "termhooks.h"
 #include "font.h"
 
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#include <sys/types.h>
+#ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
+#endif /* HAVE_SYS_STAT_H */
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif /* HAVE_SYS_TYPES_H */
+
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
 
+#ifdef HAVE_X_WINDOWS
 #define COLOR_TABLE_SUPPORT 1
 
 typedef struct x_bitmap_record Bitmap_Record;
@@ -67,11 +75,7 @@ typedef struct x_bitmap_record Bitmap_Record;
 #define PIX_MASK_DRAW   1
 #endif /* HAVE_X_WINDOWS */
 
-
 #ifdef HAVE_NTGUI
-#include "w32.h"
-#include "w32term.h"
-
 /* W32_TODO : Color tables on W32.  */
 #undef COLOR_TABLE_SUPPORT
 
@@ -84,15 +88,9 @@ typedef struct w32_bitmap_record Bitmap_Record;
 #define PIX_MASK_RETAIN 0
 #define PIX_MASK_DRAW   1
 
-#define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual
 #define x_defined_color w32_defined_color
 #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits)
 
-/* Functions from w32term.c that depend on XColor (so can't go in w32term.h
-   without modifying lots of files).  */
-extern void x_query_colors (struct frame *f, XColor *colors, int ncolors);
-extern void x_query_color (struct frame *f, XColor *color);
-
 /* Version of libpng that we were compiled with, or -1 if no PNG
    support was compiled in.  This is tested by w32-win.el to correctly
    set up the alist used to search for PNG libraries.  */
@@ -100,10 +98,6 @@ Lisp_Object Qlibpng_version;
 #endif /* HAVE_NTGUI */
 
 #ifdef HAVE_NS
-#include "nsterm.h"
-#include <sys/types.h>
-#include <sys/stat.h>
-
 #undef COLOR_TABLE_SUPPORT
 
 typedef struct ns_bitmap_record Bitmap_Record;
@@ -117,10 +111,8 @@ typedef struct ns_bitmap_record Bitmap_Record;
 #define PIX_MASK_RETAIN 0
 #define PIX_MASK_DRAW   1
 
-#define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO (f)->visual
 #define x_defined_color(f, name, color_def, alloc) \
   ns_defined_color (f, name, color_def, alloc, 0)
-#define FRAME_X_SCREEN(f) 0
 #define DefaultDepthOfScreen(screen) x_display_list->n_planes
 #endif /* HAVE_NS */
 
@@ -577,6 +569,7 @@ static void x_emboss (struct frame *, struct image *);
 static int x_build_heuristic_mask (struct frame *, struct image *,
                                    Lisp_Object);
 #ifdef HAVE_NTGUI
+extern Lisp_Object Vlibrary_cache, QCloaded_from;
 #define CACHE_IMAGE_TYPE(type, status) \
   do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0)
 #else
diff --git a/src/keyboard.c b/src/keyboard.c
index d9b88a8a911..7b1ea341e7f 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -63,20 +63,11 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <unistd.h>
 #include <fcntl.h>
 
-/* This is to get the definitions of the XK_ symbols.  */
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#endif
-
-#ifdef HAVE_NTGUI
-#include "w32term.h"
-#endif /* HAVE_NTGUI */
-
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
 
-/* Variables for blockinput.h:  */
+/* Variables for blockinput.h: */
 
 /* Non-zero if interrupt input is blocked right now.  */
 volatile int interrupt_input_blocked;
@@ -1324,7 +1315,7 @@ usage: (track-mouse BODY...)  */)
    If ignore_mouse_drag_p is non-zero, ignore (implicit) mouse movement
    after resizing the tool-bar window.  */
 
-#if !defined HAVE_WINDOW_SYSTEM || defined USE_GTK || defined HAVE_NS
+#if !defined HAVE_WINDOW_SYSTEM
 static
 #endif
 int ignore_mouse_drag_p;
diff --git a/src/keyboard.h b/src/keyboard.h
index 91484b3649b..98b1933f3f9 100644
--- a/src/keyboard.h
+++ b/src/keyboard.h
@@ -469,7 +469,7 @@ extern int waiting_for_input;
    happens.  */
 extern EMACS_TIME *input_available_clear_time;
 
-#if defined HAVE_WINDOW_SYSTEM && !defined USE_GTK && !defined HAVE_NS
+#if defined HAVE_WINDOW_SYSTEM
 extern int ignore_mouse_drag_p;
 #endif
 
diff --git a/src/menu.c b/src/menu.c
index 3e466b46aa3..20770537326 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -36,24 +36,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "../lwlib/lwlib.h"
 #endif
 
-#ifdef HAVE_X_WINDOWS
-#include "xterm.h"
-#endif
-
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif
-
-#ifdef USE_GTK
-#include "gtkutil.h"
-#endif
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
 
 #ifdef HAVE_NTGUI
-#include "w32term.h"
-
 extern AppendMenuW_Proc unicode_append_menu;
 extern HMENU current_popup_menu;
-
 #endif /* HAVE_NTGUI  */
 
 #include "menu.h"
diff --git a/src/nsterm.h b/src/nsterm.h
index f9149d97571..f0cae193005 100644
--- a/src/nsterm.h
+++ b/src/nsterm.h
@@ -631,6 +631,8 @@ struct x_output
 /* This is the `Display *' which frame F is on.  */
 #define FRAME_NS_DISPLAY(f) (0)
 #define FRAME_X_DISPLAY(f) (0)
+#define FRAME_X_SCREEN(f) (0)
+#define FRAME_X_VISUAL(f) FRAME_NS_DISPLAY_INFO(f)->visual
 
 #define FRAME_FOREGROUND_COLOR(f) ((f)->output_data.ns->foreground_color)
 #define FRAME_BACKGROUND_COLOR(f) ((f)->output_data.ns->background_color)
@@ -780,31 +782,6 @@ extern Lisp_Object find_and_return_menu_selection (FRAME_PTR f,
 extern Lisp_Object ns_popup_dialog (Lisp_Object position, Lisp_Object contents,
                                     Lisp_Object header);
 
-/* More prototypes that should be moved to a more general include file */
-extern void set_frame_menubar (struct frame *f, int first_time, int deep_p);
-extern void x_set_window_size (struct frame *f, int change_grav,
-                              int cols, int rows);
-extern void x_sync (struct frame *);
-extern Lisp_Object x_get_focus_frame (struct frame *);
-extern void x_set_mouse_position (struct frame *f, int h, int v);
-extern void x_set_mouse_pixel_position (struct frame *f, int pix_x, int pix_y);
-extern void x_make_frame_visible (struct frame *f);
-extern void x_make_frame_invisible (struct frame *f);
-extern void x_iconify_frame (struct frame *f);
-extern int x_char_width (struct frame *f);
-extern int x_char_height (struct frame *f);
-extern int x_pixel_width (struct frame *f);
-extern int x_pixel_height (struct frame *f);
-extern void x_set_frame_alpha (struct frame *f);
-extern void x_set_menu_bar_lines (struct frame *, Lisp_Object, Lisp_Object);
-extern void x_set_tool_bar_lines (struct frame *f,
-                                  Lisp_Object value,
-                                  Lisp_Object oldval);
-extern void x_activate_menubar (struct frame *);
-extern void free_frame_menubar (struct frame *);
-extern void x_free_frame_resources (struct frame *);
-extern void x_destroy_window (struct frame *);
-
 #define NSAPP_DATA2_RUNASSCRIPT 10
 extern void ns_run_ascript (void);
 
diff --git a/src/process.c b/src/process.c
index fbe56ebcb54..bfac054c3c2 100644
--- a/src/process.c
+++ b/src/process.c
@@ -116,12 +116,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "gnutls.h"
 #endif
 
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
+#endif /* HAVE_WINDOW_SYSTEM */
+
 #if defined (USE_GTK) || defined (HAVE_GCONF) || defined (HAVE_GSETTINGS)
 #include "xgselect.h"
 #endif
-#ifdef HAVE_NS
-#include "nsterm.h"
-#endif
 
 /* Work around GCC 4.7.0 bug with strict overflow checking; see
    <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
diff --git a/src/w32font.h b/src/w32font.h
index b08d48a3d36..a29ddbe778c 100644
--- a/src/w32font.h
+++ b/src/w32font.h
@@ -19,6 +19,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #ifndef EMACS_W32FONT_H
 #define EMACS_W32FONT_H
 
+#include "font.h"
 
 /* Bit 17 of ntmFlags in NEWTEXTMETRIC is set for PostScript OpenType fonts,
    bit 18 for TrueType OpenType fonts, bit 20 for Type1 fonts.  */
@@ -83,4 +84,7 @@ int uniscribe_check_otf (LOGFONT *font, Lisp_Object otf_spec);
 
 Lisp_Object intern_font_name (char *);
 
+extern void syms_of_w32font (void);
+extern void globals_of_w32font (void);
+
 #endif
diff --git a/src/w32term.h b/src/w32term.h
index 6fc2beeb18c..5d756f435e4 100644
--- a/src/w32term.h
+++ b/src/w32term.h
@@ -342,7 +342,7 @@ extern struct w32_output w32term_display;
 
 /* Return the window associated with the frame F.  */
 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
-#define FRAME_X_WINDOW(f) ((f)->output_data.w32->window_desc)
+#define FRAME_X_WINDOW(f) FRAME_W32_WINDOW (f)
 
 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
diff --git a/src/w32xfns.c b/src/w32xfns.c
index 745a5cfe3e7..62e45dd987b 100644
--- a/src/w32xfns.c
+++ b/src/w32xfns.c
@@ -438,6 +438,6 @@ XParseGeometry (char *string,
 
 /* x_sync is a no-op on W32.  */
 void
-x_sync (void *f)
+x_sync (struct frame *f)
 {
 }
diff --git a/src/xfaces.c b/src/xfaces.c
index 820d764d0a8..5554c4aa705 100644
--- a/src/xfaces.c
+++ b/src/xfaces.c
@@ -225,11 +225,10 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "dosfns.h"
 #endif
 
-#ifdef WINDOWSNT
-#include "w32term.h"
+#ifdef HAVE_WINDOW_SYSTEM
+#include TERM_HEADER
 #include "fontset.h"
-/* Redefine X specifics to W32 equivalents to avoid cluttering the
-   code with #ifdef blocks. */
+#ifdef WINDOWSNT
 #undef FRAME_X_DISPLAY_INFO
 #define FRAME_X_DISPLAY_INFO FRAME_W32_DISPLAY_INFO
 #define x_display_info w32_display_info
@@ -238,13 +237,13 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif /* WINDOWSNT */
 
 #ifdef HAVE_NS
-#include "nsterm.h"
 #undef FRAME_X_DISPLAY_INFO
 #define FRAME_X_DISPLAY_INFO FRAME_NS_DISPLAY_INFO
 #define x_display_info ns_display_info
 #define check_x check_ns
 #define GCGraphicsExposures 0
 #endif /* HAVE_NS */
+#endif /* HAVE_WINDOW_SYSTEM */
 
 #include "buffer.h"
 #include "dispextern.h"
@@ -254,9 +253,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "termchar.h"
 
 #include "font.h"
-#ifdef HAVE_WINDOW_SYSTEM
-#include "fontset.h"
-#endif /* HAVE_WINDOW_SYSTEM */
 
 #ifdef HAVE_X_WINDOWS
 
@@ -2565,13 +2561,13 @@ merge_face_ref (struct frame *f, Lisp_Object face_ref, Lisp_Object *to,
                 }
               else if (EQ (keyword, QCstipple))
                 {
-#if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
+#if defined (HAVE_WINDOW_SYSTEM)
                   Lisp_Object pixmap_p = Fbitmap_spec_p (value);
                   if (!NILP (pixmap_p))
                     to[LFACE_STIPPLE_INDEX] = value;
                   else
                     err = 1;
-#endif
+#endif /* HAVE_WINDOW_SYSTEM */
                 }
               else if (EQ (keyword, QCwidth))
                 {
@@ -3125,14 +3121,14 @@ FRAME 0 means change the face on all frames, and change the default
     }
   else if (EQ (attr, QCstipple))
     {
-#if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
+#if defined (HAVE_WINDOW_SYSTEM)
       if (!UNSPECIFIEDP (value) && !IGNORE_DEFFACE_P (value)
           && !NILP (value)
           && NILP (Fbitmap_spec_p (value)))
         signal_error ("Invalid stipple attribute", value);
       old_value = LFACE_STIPPLE (lface);
       ASET (lface, LFACE_STIPPLE_INDEX, value);
-#endif /* HAVE_X_WINDOWS || HAVE_NS */
+#endif /* HAVE_WINDOW_SYSTEM */
     }
   else if (EQ (attr, QCwidth))
     {
diff --git a/src/xterm.h b/src/xterm.h
index 007c92b929c..2d718f49118 100644
--- a/src/xterm.h
+++ b/src/xterm.h
@@ -16,6 +16,9 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
+#ifndef XTERM_H
+#define XTERM_H
+
 #include <X11/Xlib.h>
 #include <X11/cursorfont.h>
 
@@ -367,13 +370,14 @@ extern int use_xim;
 extern void check_x (void);
 
 extern struct frame *x_window_to_frame (struct x_display_info *, int);
-
 extern struct frame *x_any_window_to_frame (struct x_display_info *, int);
 extern struct frame *x_menubar_window_to_frame (struct x_display_info *,
                                                 XEvent *);
-
 extern struct frame *x_top_window_to_frame (struct x_display_info *, int);
 
+extern struct frame *x_menubar_window_to_frame (struct x_display_info *,
+                                                XEvent *);
+
 #if ! defined (USE_X_TOOLKIT) && ! defined (USE_GTK)
 #define x_any_window_to_frame x_window_to_frame
 #define x_top_window_to_frame x_window_to_frame
@@ -389,7 +393,6 @@ extern struct x_display_info *x_display_list;
 extern Lisp_Object x_display_name_list;
 
 extern struct x_display_info *x_display_info_for_display (Display *);
-extern void x_set_frame_alpha (struct frame *);
 
 extern struct x_display_info *x_term_init (Lisp_Object, char *, char *);
 extern int x_display_ok  (const char *);
@@ -941,7 +944,6 @@ XrmDatabase x_load_resources (Display *, const char *, const char *,
 /* Defined in xterm.c */
 
 extern int x_text_icon (struct frame *, const char *);
-extern int x_bitmap_icon (struct frame *, Lisp_Object);
 extern void x_catch_errors (Display *);
 extern void x_check_errors (Display *, const char *)
   ATTRIBUTE_FORMAT_PRINTF (2, 0);
@@ -953,11 +955,6 @@ extern void x_set_mouse_position (struct frame *, int, int);
 extern void x_set_mouse_pixel_position (struct frame *, int, int);
 extern void xembed_request_focus (struct frame *);
 extern void x_ewmh_activate_frame (struct frame *);
-extern void x_make_frame_visible (struct frame *);
-extern void x_make_frame_invisible (struct frame *);
-extern void x_iconify_frame (struct frame *);
-extern void x_free_frame_resources (struct frame *);
-extern void x_wm_set_size_hint (struct frame *, long, int);
 extern void x_delete_terminal (struct terminal *terminal);
 extern unsigned long x_copy_color (struct frame *, unsigned long);
 #ifdef USE_X_TOOLKIT
@@ -970,7 +967,6 @@ extern int x_alloc_lighter_color_for_widget (Widget, Display *, Colormap,
                                              double, int);
 #endif
 extern int x_alloc_nearest_color (struct frame *, Colormap, XColor *);
-extern void x_query_colors (struct frame *f, XColor *, int);
 extern void x_query_color (struct frame *f, XColor *);
 extern void x_clear_area (Display *, Window, int, int, int, int, int);
 #if defined HAVE_MENUS && !defined USE_X_TOOLKIT && !defined USE_GTK
@@ -1029,8 +1025,6 @@ extern int xg_set_icon (struct frame *, Lisp_Object);
 extern int xg_set_icon_from_xpm_data (struct frame *, const char**);
 #endif /* USE_GTK */
 
-extern void x_real_positions (struct frame *, int *, int *);
-extern void x_set_menu_bar_lines (struct frame *, Lisp_Object, Lisp_Object);
 extern void x_implicitly_set_name (struct frame *, Lisp_Object, Lisp_Object);
 extern void xic_free_xfontset (struct frame *);
 extern void create_frame_xic (struct frame *);
@@ -1040,9 +1034,6 @@ extern void xic_set_statusarea (struct frame *);
 extern void xic_set_xfontset (struct frame *, const char *);
 extern int x_pixel_width (struct frame *);
 extern int x_pixel_height (struct frame *);
-extern int x_char_width (struct frame *);
-extern int x_char_height (struct frame *);
-extern void x_sync (struct frame *);
 extern int x_defined_color (struct frame *, const char *, XColor *, int);
 #ifdef HAVE_X_I18N
 extern void free_frame_xic (struct frame *);
@@ -1050,7 +1041,6 @@ extern void free_frame_xic (struct frame *);
 extern char * xic_create_fontsetname (const char *base_fontname, int motif);
 # endif
 #endif
-extern void x_set_tool_bar_lines (struct frame *, Lisp_Object, Lisp_Object);
 
 /* Defined in xfaces.c */
 
@@ -1067,10 +1057,8 @@ extern void x_menu_set_in_use (int);
 #ifdef USE_MOTIF
 extern void x_menu_wait_for_event (void *data);
 #endif
-extern void x_activate_menubar (struct frame *);
 extern int popup_activated (void);
 extern void initialize_frame_menubar (struct frame *);
-extern void free_frame_menubar (struct frame *);
 
 /* Defined in widget.c */
 
@@ -1112,3 +1100,5 @@ extern Lisp_Object Qx_gtk_map_stock;
    (nr).y = (ry),                                       \
    (nr).width = (rwidth),                               \
    (nr).height = (rheight))
+
+#endif /* XTERM_H */