Make the native backend build-optional

configure.ac

@@ -199,9 +199,15 @@ AS_IF([test "x$WAYLAND_SCANNER" = "xno"],
 AC_SUBST([WAYLAND_SCANNER])
 AC_SUBST(XWAYLAND_PATH)
 
-MUTTER_PC_MODULES="$MUTTER_PC_MODULES clutter-wayland-1.0 clutter-wayland-compositor-1.0 clutter-egl-1.0 wayland-server >= 1.4.93 libdrm libsystemd"
+MUTTER_PC_MODULES="$MUTTER_PC_MODULES clutter-wayland-1.0 clutter-wayland-compositor-1.0 clutter-egl-1.0 wayland-server >= 1.4.93"
 PKG_CHECK_MODULES(MUTTER, $MUTTER_PC_MODULES)
 
+PKG_CHECK_MODULES(MUTTER_NATIVE_BACKEND, [libdrm libsystemd], [have_native_backend=yes], [have_native_backend=no])
+if test $have_native_backend = yes; then
+   AC_DEFINE([HAVE_NATIVE_BACKEND],[1],[Define if you want to enable the native (KMS) backend based on systemd])
+fi
+AM_CONDITIONAL([HAVE_NATIVE_BACKEND],[test $have_native_backend = yes])
+
 PKG_CHECK_EXISTS([xi >= 1.6.99.1],
                  AC_DEFINE([HAVE_XI23],[1],[Define if you have support for XInput 2.3 or greater]))
 

src/Makefile.am

@@ -11,6 +11,7 @@ INCLUDES=								\
 	-DCOGL_ENABLE_EXPERIMENTAL_API					\
 	-DCOGL_ENABLE_EXPERIMENTAL_2_0_API                              \
 	$(MUTTER_CFLAGS)						\
+	$(MUTTER_NATIVE_BACKEND_CFLAGS)					\
 	-I$(srcdir)							\
 	-I$(srcdir)/backends						\
 	-I$(srcdir)/core						\
@@ -71,18 +72,6 @@ libmutter_la_SOURCES =				\
 	backends/meta-monitor-manager-dummy.h	\
 	backends/edid-parse.c			\
 	backends/edid.h				\
-	backends/native/meta-backend-native.c		\
-	backends/native/meta-backend-native.h		\
-	backends/native/meta-cursor-renderer-native.c	\
-	backends/native/meta-cursor-renderer-native.h	\
-	backends/native/meta-idle-monitor-native.c	\
-	backends/native/meta-idle-monitor-native.h	\
-	backends/native/meta-monitor-manager-kms.c	\
-	backends/native/meta-monitor-manager-kms.h	\
-	backends/native/meta-launcher.c			\
-	backends/native/meta-launcher.h			\
-	backends/native/dbus-utils.c			\
-	backends/native/dbus-utils.h			\
 	backends/x11/meta-backend-x11.c			\
 	backends/x11/meta-backend-x11.h			\
 	backends/x11/meta-cursor-renderer-x11.c		\
@@ -243,11 +232,27 @@ libmutter_la_SOURCES =				\
 	wayland/window-wayland.c		\
 	wayland/window-wayland.h
 
+if HAVE_NATIVE_BACKEND
+libmutter_la_SOURCES +=					\
+	backends/native/meta-backend-native.c		\
+	backends/native/meta-backend-native.h		\
+	backends/native/meta-cursor-renderer-native.c	\
+	backends/native/meta-cursor-renderer-native.h	\
+	backends/native/meta-idle-monitor-native.c	\
+	backends/native/meta-idle-monitor-native.h	\
+	backends/native/meta-monitor-manager-kms.c	\
+	backends/native/meta-monitor-manager-kms.h	\
+	backends/native/meta-launcher.c			\
+	backends/native/meta-launcher.h			\
+	backends/native/dbus-utils.c			\
+	backends/native/dbus-utils.h
+endif
+
 nodist_libmutter_la_SOURCES =			\
 	$(mutter_built_sources)
 
 libmutter_la_LDFLAGS = -no-undefined
-libmutter_la_LIBADD  = $(MUTTER_LIBS)
+libmutter_la_LIBADD  = $(MUTTER_LIBS) $(MUTTER_NATIVE_BACKEND_LIBS)
 
 # Headers installed for plugins; introspected information will
 # be extracted into Mutter-<version>.gir

src/backends/meta-backend.c

@@ -30,7 +30,10 @@
 #include <clutter/clutter.h>
 
 #include "backends/x11/meta-backend-x11.h"
+
+#ifdef HAVE_NATIVE_BACKEND
 #include "backends/native/meta-backend-native.h"
+#endif
 
 static MetaBackend *_backend;
 
@@ -214,7 +217,7 @@ get_backend_type (void)
     return META_TYPE_BACKEND_X11;
 #endif
 
-#if defined(CLUTTER_WINDOWING_EGL)
+#if defined(CLUTTER_WINDOWING_EGL) && defined(HAVE_NATIVE_BACKEND)
   if (clutter_check_windowing_backend (CLUTTER_WINDOWING_EGL))
     return META_TYPE_BACKEND_NATIVE;
 #endif

src/backends/meta-cursor.c

@@ -28,7 +28,10 @@
 #include "display-private.h"
 #include "screen-private.h"
 #include "meta-backend.h"
+
+#ifdef HAVE_NATIVE_BACKEND
 #include "backends/native/meta-cursor-renderer-native.h"
+#endif
 
 #include <string.h>
 
@@ -171,12 +174,14 @@ meta_cursor_image_load_gbm_buffer (struct gbm_device *gbm,
 static struct gbm_device *
 get_gbm_device (void)
 {
+#ifdef HAVE_NATIVE_BACKEND
   MetaBackend *meta_backend = meta_get_backend ();
   MetaCursorRenderer *renderer = meta_backend_get_cursor_renderer (meta_backend);
 
   if (META_IS_CURSOR_RENDERER_NATIVE (renderer))
     return meta_cursor_renderer_native_get_gbm_device (META_CURSOR_RENDERER_NATIVE (renderer));
-  else
+#endif
+
   return NULL;
 }
 

src/core/events.c

@@ -33,9 +33,12 @@
 #include "bell.h"
 #include "workspace-private.h"
 #include "backends/meta-backend.h"
+#include "backends/x11/meta-backend-x11.h"
+
+#ifdef HAVE_NATIVE_BACKEND
 #include "backends/native/meta-backend-native.h"
 #include "backends/native/meta-idle-monitor-native.h"
-#include "backends/x11/meta-backend-x11.h"
+#endif
 
 #include "x11/window-x11.h"
 #include "x11/xprops.h"
@@ -1828,6 +1831,7 @@ meta_display_handle_xevent (MetaDisplay *display,
 static void
 handle_idletime_for_event (const ClutterEvent *event)
 {
+#ifdef HAVE_NATIVE_BACKEND
   /* This is handled by XSync under X11. */
   MetaBackend *backend = meta_get_backend ();
 
@@ -1857,6 +1861,7 @@ handle_idletime_for_event (const ClutterEvent *event)
           meta_idle_monitor_native_reset_idletime (device_monitor);
         }
     }
+#endif /* HAVE_NATIVE_BACKEND */
 }
 
 static gboolean

src/core/keybindings.c

@@ -57,7 +57,10 @@
 
 #include "wayland/meta-wayland.h"
 #include "backends/x11/meta-backend-x11.h"
+
+#ifdef HAVE_NATIVE_BACKEND
 #include "backends/native/meta-backend-native.h"
+#endif
 
 #define SCHEMA_COMMON_KEYBINDINGS "org.gnome.desktop.wm.keybindings"
 #define SCHEMA_MUTTER_KEYBINDINGS "org.gnome.mutter.keybindings"
@@ -3166,6 +3169,7 @@ handle_set_spew_mark (MetaDisplay     *display,
   meta_verbose ("-- MARK MARK MARK MARK --\n");
 }
 
+#ifdef HAVE_NATIVE_BACKEND
 static void
 handle_switch_vt (MetaDisplay     *display,
                   MetaScreen      *screen,
@@ -3183,6 +3187,7 @@ handle_switch_vt (MetaDisplay     *display,
       g_error_free (error);
     }
 }
+#endif /* HAVE_NATIVE_BACKEND */
 
 /**
  * meta_keybindings_set_custom_handler:
@@ -3475,6 +3480,7 @@ init_builtin_key_bindings (MetaDisplay *display)
                           META_KEYBINDING_ACTION_SET_SPEW_MARK,
                           handle_set_spew_mark, 0);
 
+#ifdef HAVE_NATIVE_BACKEND
   MetaBackend *backend = meta_get_backend ();
   if (META_IS_BACKEND_NATIVE (backend))
     {
@@ -3527,6 +3533,7 @@ init_builtin_key_bindings (MetaDisplay *display)
                               META_KEYBINDING_ACTION_NONE,
                               handle_switch_vt, 7);
     }
+#endif /* HAVE_NATIVE_BACKEND */
 
 #undef REVERSES_AND_REVERSED
 

src/core/main.c

@@ -181,7 +181,9 @@ static gboolean  opt_replace_wm;
 static gboolean  opt_disable_sm;
 static gboolean  opt_sync;
 static gboolean  opt_wayland;
+#ifdef HAVE_NATIVE_BACKEND
 static gboolean  opt_display_server;
+#endif
 
 static GOptionEntry meta_options[] = {
   {
@@ -225,11 +227,13 @@ static GOptionEntry meta_options[] = {
     N_("Run as a wayland compositor"),
     NULL
   },
+#ifdef HAVE_NATIVE_BACKEND
   {
     "display-server", 0, 0, G_OPTION_ARG_NONE,
     &opt_display_server,
     N_("Run as a full display server, rather than nested")
   },
+#endif
   {NULL}
 };
 
@@ -332,8 +336,10 @@ meta_init (void)
   if (g_getenv ("MUTTER_DEBUG"))
     meta_set_debugging (TRUE);
 
+#if defined(CLUTTER_WINDOWING_EGL) && defined(HAVE_NATIVE_BACKEND)
   if (opt_display_server)
     clutter_set_windowing_backend (CLUTTER_WINDOWING_EGL);
+#endif
 
   meta_set_is_wayland_compositor (opt_wayland);