meson: Split x11 option into backend/xwayland

Allow disabling either the xwayland or backend implementation of x11.
Meson options were not added as this is more of a groundwork than the
actual implementation.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2354>

clutter/meson.build

@@ -59,7 +59,7 @@ if have_wayland
   ]
 endif
 
-if have_x11
+if have_x11_client
   clutter_pkg_deps += [
     x11_dep,
   ]

cogl/cogl/meson.build

@@ -9,8 +9,8 @@ cdata.set('COGL_HAS_EGL_PLATFORM_XLIB_SUPPORT', have_egl_xlib)
 cdata.set('COGL_HAS_EGL_SUPPORT', have_egl)
 cdata.set('COGL_HAS_X11', have_x11)
 cdata.set('COGL_HAS_X11_SUPPORT', have_x11)
-cdata.set('COGL_HAS_XLIB', have_x11)
+cdata.set('COGL_HAS_XLIB', have_x11_client)
-cdata.set('COGL_HAS_XLIB_SUPPORT', have_x11)
+cdata.set('COGL_HAS_XLIB_SUPPORT', have_x11_client)
 cdata.set('COGL_HAS_TRACING', have_profiler)
 
 cogl_defines_h = configure_file(
@@ -360,7 +360,7 @@ cogl_sources = [
   'cogl-graphene.c',
 ]
 
-if have_x11
+if have_x11_client
   cogl_nonintrospected_headers += [
     'winsys/cogl-texture-pixmap-x11.h',
     'cogl-xlib.h',

cogl/meson.build

@@ -47,7 +47,7 @@ if have_egl
   ]
 endif
 
-if have_x11
+if have_x11_client
   cogl_pkg_deps += [
     x11_dep,
   ]

meson.build

@@ -101,7 +101,6 @@ mutter_installed_tests_libexecdir = join_paths(
   libexecdir, 'installed-tests', libmutter_name)
 
 m_dep = cc.find_library('m', required: true)
-x11_dep = dependency('x11')
 graphene_dep = dependency('graphene-gobject-1.0', version: graphene_req)
 gtk3_dep = dependency('gtk+-3.0', version: gtk3_req)
 gdk_pixbuf_dep = dependency('gdk-pixbuf-2.0')
@@ -120,6 +119,24 @@ gthread_dep = dependency('gobject-2.0', version: glib_req)
 gmodule_no_export_dep = dependency('gmodule-no-export-2.0', version: glib_req)
 gnome_settings_daemon_dep = dependency('gnome-settings-daemon', required: false)
 json_glib_dep = dependency('json-glib-1.0', version: json_glib_req)
+xkbcommon_dep = dependency('xkbcommon', version: xkbcommon_req)
+ice_dep = dependency('ice')
+atk_dep = dependency('atk', version: atk_req)
+libcanberra_dep = dependency('libcanberra', version: libcanberra_req)
+dbus_dep = dependency('dbus-1')
+
+have_wayland = get_option('wayland')
+# For now always require X11 support
+have_x11 = true
+have_xwayland = have_wayland # for now default to have_wayland
+have_x11_client = have_x11 or have_xwayland
+
+if have_xwayland and not have_wayland
+  error('XWayland support requires Wayland support enabled')
+endif
+
+if have_x11_client
+  x11_dep = dependency('x11')
   xcomposite_dep = dependency('xcomposite', version: xcomposite_req)
   xcursor_dep = dependency('xcursor')
   xdamage_dep = dependency('xdamage')
@@ -129,7 +146,6 @@ xi_dep = dependency('xi', version: xi_req)
   xtst_dep = dependency('xtst')
   xkbfile_dep = dependency('xkbfile')
   xkeyboard_config_dep = dependency('xkeyboard-config')
-xkbcommon_dep = dependency('xkbcommon', version: xkbcommon_req)
   xkbcommon_x11_dep = dependency('xkbcommon-x11')
   xrender_dep = dependency('xrender')
   x11_xcb_dep = dependency('x11-xcb')
@@ -138,13 +154,7 @@ xcb_randr_dep = dependency('xcb-randr')
   xcb_res_dep = dependency('xcb-res')
   xinerama_dep = dependency('xinerama')
   xau_dep = dependency('xau')
-ice_dep = dependency('ice')
+endif
-atk_dep = dependency('atk', version: atk_req)
-libcanberra_dep = dependency('libcanberra', version: libcanberra_req)
-dbus_dep = dependency('dbus-1')
-
-# For now always require X11 support
-have_x11 = true
 
 
 have_gnome_desktop = get_option('libgnome_desktop')
@@ -170,7 +180,7 @@ if have_glx
   endif
 endif
 
-have_egl_xlib = have_egl and have_x11
+have_egl_xlib = have_egl and have_x11_client
 
 have_gles2 = get_option('gles2')
 if have_gles2
@@ -182,7 +192,6 @@ if have_gles2
   endif
 endif
 
-have_wayland = get_option('wayland')
 if have_wayland
   wayland_server_dep = dependency('wayland-server', version: wayland_server_req)
   wayland_client_dep = dependency('wayland-client', version: wayland_server_req)
@@ -304,6 +313,9 @@ if have_tests
     if not have_wayland
       error('Tests require Wayland to be enabled')
     endif
+    if not have_x11_client
+      error('Tests requires an X11 client')
+    endif
   endif
   have_native_tests = get_option('native_tests')
   if have_native_tests
@@ -469,8 +481,10 @@ cdata.set('HAVE_STARTUP_NOTIFICATION', have_startup_notification)
 cdata.set('HAVE_INTROSPECTION', have_introspection)
 cdata.set('HAVE_PROFILER', have_profiler)
 
+if have_x11_client
   xkb_base = xkeyboard_config_dep.get_pkgconfig_variable('xkb_base')
   cdata.set_quoted('XKB_BASE', xkb_base)
+endif
 
 if cc.has_header_symbol('sys/prctl.h', 'prctl')
   cdata.set('HAVE_SYS_PRCTL', 1)
@@ -479,7 +493,7 @@ endif
 have_xwayland_initfd = false
 have_xwayland_listenfd = false
 have_xwayland_terminate_delay = false
-if have_wayland
+if have_xwayland
   xwayland_dep = dependency('xwayland', required: false)
 
   xwayland_path = get_option('xwayland_path')
@@ -543,11 +557,13 @@ if have_wayland
 endif
 
 have_xsetioerrorexithandler = false
+if have_x11_client
   if cc.has_function('XSetIOErrorExitHandler', dependencies: x11_dep,
                     prefix: '''#include <X11/Xlib.h>''')
     have_xsetioerrorexithandler = true
     cdata.set('HAVE_XSETIOERROREXITHANDLER', 1)
   endif
+endif
 
 optional_functions = [
   'mkostemp',
@@ -607,6 +623,8 @@ summary('GLX', have_glx, section: 'Rendering APIs')
 
 summary('Wayland', have_wayland, section: 'Options')
 summary('Wayland EGLStream', have_wayland_eglstream, section: 'Options')
+summary('X11', have_x11, section: 'Options')
+summary('XWayland', have_xwayland, section: 'Options')
 summary('Native Backend', have_native_backend, section: 'Options')
 summary('EGL Device', have_egl_device, section: 'Options')
 summary('Remote desktop', have_remote_desktop, section: 'Options')

src/meson.build

@@ -252,58 +252,6 @@ mutter_sources = [
   'backends/meta-viewport-info.h',
   'backends/meta-virtual-monitor.c',
   'backends/meta-virtual-monitor.h',
-  'backends/x11/cm/meta-backend-x11-cm.c',
-  'backends/x11/cm/meta-backend-x11-cm.h',
-  'backends/x11/cm/meta-cursor-sprite-xfixes.c',
-  'backends/x11/cm/meta-cursor-sprite-xfixes.h',
-  'backends/x11/cm/meta-renderer-x11-cm.c',
-  'backends/x11/cm/meta-renderer-x11-cm.h',
-  'backends/x11/meta-backend-x11.c',
-  'backends/x11/meta-backend-x11.h',
-  'backends/x11/meta-barrier-x11.c',
-  'backends/x11/meta-barrier-x11.h',
-  'backends/x11/meta-clutter-backend-x11.c',
-  'backends/x11/meta-clutter-backend-x11.h',
-  'backends/x11/meta-crtc-xrandr.c',
-  'backends/x11/meta-crtc-xrandr.h',
-  'backends/x11/meta-cursor-renderer-x11.c',
-  'backends/x11/meta-cursor-renderer-x11.h',
-  'backends/x11/meta-cursor-tracker-x11.c',
-  'backends/x11/meta-cursor-tracker-x11.h',
-  'backends/x11/meta-event-x11.c',
-  'backends/x11/meta-event-x11.h',
-  'backends/x11/meta-gpu-xrandr.c',
-  'backends/x11/meta-gpu-xrandr.h',
-  'backends/x11/meta-input-device-x11.c',
-  'backends/x11/meta-input-device-x11.h',
-  'backends/x11/meta-input-device-tool-x11.c',
-  'backends/x11/meta-input-device-tool-x11.h',
-  'backends/x11/meta-input-settings-x11.c',
-  'backends/x11/meta-input-settings-x11.h',
-  'backends/x11/meta-seat-x11.c',
-  'backends/x11/meta-seat-x11.h',
-  'backends/x11/meta-keymap-x11.c',
-  'backends/x11/meta-keymap-x11.h',
-  'backends/x11/meta-monitor-manager-xrandr.c',
-  'backends/x11/meta-monitor-manager-xrandr.h',
-  'backends/x11/meta-output-xrandr.c',
-  'backends/x11/meta-output-xrandr.h',
-  'backends/x11/meta-renderer-x11.c',
-  'backends/x11/meta-renderer-x11.h',
-  'backends/x11/meta-stage-x11.c',
-  'backends/x11/meta-stage-x11.h',
-  'backends/x11/meta-virtual-input-device-x11.c',
-  'backends/x11/meta-virtual-input-device-x11.h',
-  'backends/x11/meta-xkb-a11y-x11.c',
-  'backends/x11/meta-xkb-a11y-x11.h',
-  'backends/x11/nested/meta-backend-x11-nested.c',
-  'backends/x11/nested/meta-backend-x11-nested.h',
-  'backends/x11/nested/meta-cursor-renderer-x11-nested.c',
-  'backends/x11/nested/meta-cursor-renderer-x11-nested.h',
-  'backends/x11/nested/meta-stage-x11-nested.c',
-  'backends/x11/nested/meta-stage-x11-nested.h',
-  'backends/x11/nested/meta-renderer-x11-nested.c',
-  'backends/x11/nested/meta-renderer-x11-nested.h',
   'compositor/clutter-utils.c',
   'compositor/clutter-utils.h',
   'compositor/cogl-utils.c',
@@ -320,8 +268,6 @@ mutter_sources = [
   'compositor/meta-background-private.h',
   'compositor/meta-compositor-server.c',
   'compositor/meta-compositor-server.h',
-  'compositor/meta-compositor-x11.c',
-  'compositor/meta-compositor-x11.h',
   'compositor/meta-cullable.c',
   'compositor/meta-cullable.h',
   'compositor/meta-dnd-actor.c',
@@ -340,16 +286,10 @@ mutter_sources = [
   'compositor/meta-shaped-texture-private.h',
   'compositor/meta-surface-actor.c',
   'compositor/meta-surface-actor.h',
-  'compositor/meta-surface-actor-x11.c',
-  'compositor/meta-surface-actor-x11.h',
-  'compositor/meta-sync-ring.c',
-  'compositor/meta-sync-ring.h',
   'compositor/meta-texture-tower.c',
   'compositor/meta-texture-tower.h',
   'compositor/meta-window-actor.c',
   'compositor/meta-window-actor-private.h',
-  'compositor/meta-window-actor-x11.c',
-  'compositor/meta-window-actor-x11.h',
   'compositor/meta-window-group.c',
   'compositor/meta-window-group-private.h',
   'compositor/meta-window-shape.c',
@@ -418,6 +358,75 @@ mutter_sources = [
   'core/window-private.h',
   'core/workspace.c',
   'core/workspace-private.h',
+]
+
+if have_x11
+  mutter_sources += [
+    'backends/x11/cm/meta-backend-x11-cm.c',
+    'backends/x11/cm/meta-backend-x11-cm.h',
+    'backends/x11/cm/meta-cursor-sprite-xfixes.c',
+    'backends/x11/cm/meta-cursor-sprite-xfixes.h',
+    'backends/x11/cm/meta-renderer-x11-cm.c',
+    'backends/x11/cm/meta-renderer-x11-cm.h',
+    'backends/x11/meta-backend-x11.c',
+    'backends/x11/meta-backend-x11.h',
+    'backends/x11/meta-barrier-x11.c',
+    'backends/x11/meta-barrier-x11.h',
+    'backends/x11/meta-clutter-backend-x11.c',
+    'backends/x11/meta-clutter-backend-x11.h',
+    'backends/x11/meta-crtc-xrandr.c',
+    'backends/x11/meta-crtc-xrandr.h',
+    'backends/x11/meta-cursor-renderer-x11.c',
+    'backends/x11/meta-cursor-renderer-x11.h',
+    'backends/x11/meta-cursor-tracker-x11.c',
+    'backends/x11/meta-cursor-tracker-x11.h',
+    'backends/x11/meta-event-x11.c',
+    'backends/x11/meta-event-x11.h',
+    'backends/x11/meta-gpu-xrandr.c',
+    'backends/x11/meta-gpu-xrandr.h',
+    'backends/x11/meta-input-device-x11.c',
+    'backends/x11/meta-input-device-x11.h',
+    'backends/x11/meta-input-device-tool-x11.c',
+    'backends/x11/meta-input-device-tool-x11.h',
+    'backends/x11/meta-input-settings-x11.c',
+    'backends/x11/meta-input-settings-x11.h',
+    'backends/x11/meta-seat-x11.c',
+    'backends/x11/meta-seat-x11.h',
+    'backends/x11/meta-keymap-x11.c',
+    'backends/x11/meta-keymap-x11.h',
+    'backends/x11/meta-monitor-manager-xrandr.c',
+    'backends/x11/meta-monitor-manager-xrandr.h',
+    'backends/x11/meta-output-xrandr.c',
+    'backends/x11/meta-output-xrandr.h',
+    'backends/x11/meta-renderer-x11.c',
+    'backends/x11/meta-renderer-x11.h',
+    'backends/x11/meta-stage-x11.c',
+    'backends/x11/meta-stage-x11.h',
+    'backends/x11/meta-virtual-input-device-x11.c',
+    'backends/x11/meta-virtual-input-device-x11.h',
+    'backends/x11/meta-xkb-a11y-x11.c',
+    'backends/x11/meta-xkb-a11y-x11.h',
+    'backends/x11/nested/meta-backend-x11-nested.c',
+    'backends/x11/nested/meta-backend-x11-nested.h',
+    'backends/x11/nested/meta-cursor-renderer-x11-nested.c',
+    'backends/x11/nested/meta-cursor-renderer-x11-nested.h',
+    'backends/x11/nested/meta-stage-x11-nested.c',
+    'backends/x11/nested/meta-stage-x11-nested.h',
+    'backends/x11/nested/meta-renderer-x11-nested.c',
+    'backends/x11/nested/meta-renderer-x11-nested.h',
+  ]
+endif
+
+if have_x11_client
+  mutter_sources += [
+    'compositor/meta-compositor-x11.c',
+    'compositor/meta-compositor-x11.h',
+    'compositor/meta-surface-actor-x11.c',
+    'compositor/meta-surface-actor-x11.h',
+    'compositor/meta-sync-ring.c',
+    'compositor/meta-sync-ring.h',
+    'compositor/meta-window-actor-x11.c',
+    'compositor/meta-window-actor-x11.h',
     'ui/frames.c',
     'ui/frames.h',
     'ui/theme.c',
@@ -461,6 +470,8 @@ mutter_sources = [
     'x11/xprops.c',
     'x11/xprops.h',
   ]
+endif
+
 
 if have_egl_device
   mutter_sources += [
@@ -636,6 +647,10 @@ if have_wayland
     'wayland/meta-wayland-xdg-shell.h',
     'wayland/meta-window-wayland.c',
     'wayland/meta-window-wayland.h',
+  ]
+
+  if have_xwayland
+    mutter_sources += [
       'wayland/meta-window-xwayland.c',
       'wayland/meta-window-xwayland.h',
       'wayland/meta-xwayland.c',
@@ -649,6 +664,7 @@ if have_wayland
       'wayland/meta-xwayland-surface.h',
     ]
   endif
+endif
 
 if have_native_backend
   mutter_sources += [
@@ -1047,7 +1063,7 @@ executable('mutter',
   install_dir: bindir,
   install: true,
 )
-
+if have_x11
   executable('mutter-restart-helper',
     sources: [
       files('core/restart-helper.c'),
@@ -1066,6 +1082,7 @@ executable('mutter-restart-helper',
     install_dir: libexecdir,
     install: true,
   )
+endif
 
 if have_introspection
   mutter_introspected_sources = []