pure Wayland build: conditionally compile wl_xdisplay.c/wl_xwayland.c behind USE_XWAYLAND, add stubs in wl_stubs.c, guard XWayland handler registration in wl_backend.c

src/Makefile.am

@@ -185,7 +185,6 @@ wmaker_SOURCES += \
 	backend/wayland/wl_screen.c \
 	backend/wayland/wl_shm.c \
 	backend/wayland/wl_wings.c \
-	backend/wayland/wl_xdisplay.c \
 	backend/wayland/wl_stubs.c \
 	backend/wayland/wl_clipboard.c \
 	backend/wayland/wl_dnd.c \
@@ -202,7 +201,6 @@ wmaker_SOURCES += \
 	backend/wayland/wl_output_mgmt.c \
 	backend/wayland/wl_output.c \
 	backend/wayland/wl_xdg.c \
-	backend/wayland/wl_xwayland.c \
 	backend/wayland/wl_dock.c \
 	backend/wayland/wl_layer_shell.c \
 	backend/wayland/wl_handlers.c \
@@ -211,6 +209,7 @@ wmaker_SOURCES += \
 	backend/wayland/wl_input_fwd.c
 endif
 
+
 if USE_NESTED_FUNC
 wmaker_SOURCES += misc.c \
 	xmodifier.c
@@ -240,11 +239,12 @@ AM_CPPFLAGS = $(DFLAGS) \
 	-I$(srcdir)/backend/wayland \
 	@HEADER_SEARCH_PATH@
 
+
+
 if USE_XWAYLAND
+wmaker_SOURCES += backend/wayland/wl_xdisplay.c backend/wayland/wl_xwayland.c
 AM_CPPFLAGS += -DUSE_XWAYLAND
 endif
-
-
 wmaker_LDADD = \
 	$(top_builddir)/WINGs/libWINGs.la\
 	$(top_builddir)/WINGs/libWUtil.la\

src/backend/wayland/wl_backend.c

@@ -223,9 +223,11 @@ static void handle_layer_shell_new_surface(struct wl_listener *listener, void *d
 extern void handle_xdg_new_toplevel(struct wl_listener *listener, void *data);
 extern void handle_new_toplevel_decoration(struct wl_listener *listener, void *data);
 extern void handle_virtual_pointer_new(struct wl_listener *listener, void *data);
+#ifdef USE_XWAYLAND
 extern void handle_xwayland_new_surface(struct wl_listener *listener, void *data);
 extern void handle_xwayland_ready(struct wl_listener *listener, void *data);
 extern void handle_xwayland_server_destroy(struct wl_listener *listener, void *data);
+#endif
 extern void wm_dock_create(WScreen *scr);
 extern void handle_backend_new_input(struct wl_listener *listener, void *data);
 extern void handle_backend_new_output(struct wl_listener *listener, void *data);
@@ -877,17 +879,14 @@ wl_display_open(const char *name)
      * The ready signal fires once Xwayland's socket accepts connections. */
     wl_state.xwayland = wlr_xwayland_create(wl_state.display,
                                              wl_state.compositor, false);
+#ifdef USE_XWAYLAND
     if (wl_state.xwayland) {
-        /* Wire server destroy signal to detect early failure (e.g. stale
-         * display lock → Xwayland exits before ready fires). */
         if (wl_state.xwayland->server) {
             wl_state.xwayland_server_destroy_listener.notify =
                 handle_xwayland_server_destroy;
             wl_signal_add(&wl_state.xwayland->server->events.destroy,
                           &wl_state.xwayland_server_destroy_listener);
         }
-        /* Wire ready signal BEFORE new_surface so Display* is set before
-         * any X11 window events arrive. */
         wl_state.xwayland_ready_listener.notify = handle_xwayland_ready;
         wl_signal_add(&wl_state.xwayland->events.ready,
                       &wl_state.xwayland_ready_listener);
@@ -895,9 +894,6 @@ wl_display_open(const char *name)
         wl_signal_add(&wl_state.xwayland->events.new_surface,
                       &wl_state.xwayland_new_surface_listener);
         wlr_xwayland_set_seat(wl_state.xwayland, wl_state.seat);
-        /* display_name may already be set (display number reserved by wlroots
-         * synchronously); set DISPLAY early as a best-effort so that any
-         * code between here and the ready signal can still find the socket. */
         if (wl_state.xwayland->display_name) {
             setenv("DISPLAY", wl_state.xwayland->display_name, 1);
             wwarning("wl_backend: XWayland starting DISPLAY=%s (eager mode)",
@@ -908,6 +904,7 @@ wl_display_open(const char *name)
     } else {
         wwarning("wl_backend: XWayland unavailable (X11 clients will not work)");
     }
+#endif
 
     /* periodic timer to drive client frame callbacks at ~60 fps.
      * Using a timer avoids the swapchain/allocator complexity of the full

src/backend/wayland/wl_stubs.c

@@ -49,6 +49,19 @@ void wl_client_set_maximized(WNativeWindow win, int maximized);
 void wl_client_send_protocol(WWindow *wwin, unsigned long protocol, unsigned long timestamp);
 void wl_client_kill_impl(WWindow *wwin);
 char *wl_get_command_for_window(WNativeWindow win, int elements);
+
+struct _XDisplay;
+typedef struct _XDisplay Display;
+
+/* XWayland wrapper stubs — real implementations in wl_xdisplay.c / wl_xwayland.c */
+void wl_xdisplay_flush(void) {}
+void wl_xdisplay_sync(int d) { (void)d; }
+unsigned long wl_xdisplay_intern_atom(const char *n) { (void)n; return 0; }
+Display *wl_get_x_display(void) { return NULL; }
+RImage *wl_xwayland_capture_snapshot(WScreen *s, struct wlr_xwayland_surface *xw) { (void)s; (void)xw; return NULL; }
+float wl_xwayland_get_window_opacity(WNativeWindow cw) { (void)cw; return 1.0f; }
+RContext *wl_create_rcontext(int screen_number, RContextAttributes *attribs)
+{ (void)screen_number; return RCreateContextWayland(1920, 1080, attribs); }
 #if USE_XWAYLAND
 void wl_client_message_forward(WMEvent *event, WNativeWindow target_win);
 void wl_client_send_key(WNativeWindow win, unsigned int keycode, unsigned int modifiers, int grabbed);