Fix build without Xwayland support

separate options for X11 backend and Xwayland support

CMakeLists.txt

@@ -23,12 +23,15 @@ include(CTest)
 include(test)
 
 # Options
-OPTION(WLC_X11_SUPPORT "Build X11 backend and XWayland support" ON)
+OPTION(WLC_X11_BACKEND_SUPPORT "Build X11 backend" ON)
+OPTION(WLC_XWAYLAND_SUPPORT "Support XWayland applications" ON)
 OPTION(WLC_WAYLAND_BACKEND_SUPPORT "Build Wayland backend" ON)
 OPTION(WLC_BUILD_STATIC "Build wlc as static library" OFF)
 OPTION(WLC_BUILD_EXAMPLES "Build wlc examples" ON)
 OPTION(WLC_BUILD_TESTS "Build wlc tests" ON)
 
+add_feature_info(X11Backend WLC_X11_BACKEND_SUPPORT "Compile X11 backend")
+add_feature_info(XWaylandSupport WLC_XWAYLAND_SUPPORT "Compile support for XWayland")
 add_feature_info(WaylandBackend WLC_WAYLAND_BACKEND_SUPPORT "Compile Wayland backend")
 add_feature_info(Static WLC_BUILD_STATIC "Compile as static library")
 add_feature_info(Examples WLC_BUILD_EXAMPLES "Compile example programs")
@@ -43,12 +46,26 @@ find_package(Udev REQUIRED)
 find_package(LibInput REQUIRED)
 find_package(WaylandProtocols REQUIRED)
 
-if (WLC_X11_SUPPORT)
-    find_package(X11 REQUIRED COMPONENTS X11-xcb Xfixes)
-    set_package_properties(X11 PROPERTIES TYPE REQUIRED PURPOSE "Enables X11 backend")
-    find_package(XCB REQUIRED COMPONENTS xcb-ewmh xcb-composite xcb-xkb xcb-image xcb-xfixes)
-    set_package_properties(XCB PROPERTIES TYPE REQUIRED PURPOSE "Enables Xwayland and X11 backend")
+if (WLC_X11_BACKEND_SUPPORT)
+   find_package(X11 REQUIRED COMPONENTS X11-xcb Xfixes)
+   set_package_properties(X11 PROPERTIES TYPE REQUIRED PURPOSE "Enables X11 backend")
+   find_package(XCB REQUIRED COMPONENTS xcb-ewmh xcb-composite xcb-xkb xcb-image xcb-xfixes)
+   set_package_properties(XCB PROPERTIES TYPE REQUIRED PURPOSE "Enables Xwayland and X11 backend")
+   if (X11_FOUND AND XCB_FOUND)
+      set(ENABLE_X11_BACKEND YES)
+   endif ()
 endif ()
+
+if (WLC_XWAYLAND_SUPPORT)
+   if (NOT XCB_FOUND)
+      find_package(XCB REQUIRED COMPONENTS xcb-ewmh xcb-composite xcb-xkb xcb-image xcb-xfixes)
+      set_package_properties(XCB PROPERTIES TYPE REQUIRED PURPOSE "Enables Xwayland and X11 backend")
+   endif ()
+   if (XCB_FOUND)
+      set(ENABLE_XWAYLAND_SUPPORT YES)
+   endif ()
+endif ()
+
 find_package(GLESv2 REQUIRED)
 set_package_properties(GLESv2 PROPERTIES TYPE REQUIRED PURPOSE "Enables OpenGL renderer")
 find_package(EGL REQUIRED)

src/CMakeLists.txt

@@ -62,18 +62,22 @@ set(sources
    extended/wlc-render.c
    )
 
-if (X11_FOUND)
+if (ENABLE_X11_BACKEND OR ENABLE_XWAYLAND_SUPPORT)
+   add_definitions(${XCB_DEFINITIONS})
+   include_directories(${XCB_INCLUDE_DIRS})
+   list(APPEND libs ${XCB_LIBRARIES})
+endif ()
+
+if (ENABLE_X11_BACKEND)
    add_definitions(-DENABLE_X11_BACKEND)
    include_directories(${X11_INCLUDE_DIR})
    list(APPEND sources platform/backend/x11.c)
    list(APPEND libs ${X11_LIBRARIES})
 endif ()
 
-if (XCB_FOUND)
-   add_definitions(-DENABLE_XWAYLAND ${XCB_DEFINITIONS})
-   include_directories(${XCB_INCLUDE_DIRS})
+if (ENABLE_XWAYLAND_SUPPORT)
+   add_definitions(-DENABLE_XWAYLAND)
    list(APPEND sources xwayland/xwayland.c xwayland/xwm.c xwayland/selection.c)
-   list(APPEND libs ${XCB_LIBRARIES})
 endif ()
 
 if (DBUS_FOUND)

src/xwayland/xwm.h

@@ -3,17 +3,18 @@
 
 #include <stdbool.h>
 
-#ifdef ENABLE_XWAYLAND
-
 #include <stdint.h>
 #include <chck/lut/lut.h>
-#include <xcb/xcb.h>
 #include <wayland-server.h>
+#include "compositor/seat/seat.h"
 #include "resources/types/data-source.h"
 #include "resources/types/surface.h"
 
 enum wlc_view_state_bit;
 
+#ifdef ENABLE_XWAYLAND
+#include <xcb/xcb.h>
+
 struct wlc_x11_window {
    uint32_t id; // xcb_window_t
    uint32_t surface_id;
@@ -152,9 +153,10 @@ wlc_x11_window_close(struct wlc_x11_window *win)
 }
 
 WLC_NONULL static inline bool
-wlc_xwm(struct wlc_xwm *xwm)
+wlc_xwm(struct wlc_xwm *xwm, struct wlc_seat *seat)
 {
    (void)xwm;
+   (void)seat;
    return true;
 }