Make it possible to enable/disable the various compositors from configure

compositor/Makefile.am

@@ -13,19 +13,32 @@ compositor_LDADD =					\
 	$(top_builddir)/wayland/libwayland-client.la	\
 	$(COMPOSITOR_LIBS)
 
+if ENABLE_DRM_COMPOSITOR
+drm_compositor_sources = compositor-drm.c tty.c evdev.c
+drm_sources = drm.c
+endif
+
+if ENABLE_X11_COMPOSITOR
+x11_compositor_sources = compositor-x11.c
+drm_sources = drm.c
+endif
+
+if ENABLE_WAYLAND_COMPOSITOR
+wayland_compositor_sources = compositor-wayland.c
+drm_sources = drm.c
+endif
+
 compositor_SOURCES =				\
 	compositor.c				\
 	compositor.h				\
-	compositor-drm.c			\
-	compositor-x11.c			\
-	compositor-wayland.c			\
 	screenshooter.c				\
 	screenshooter-protocol.c		\
 	screenshooter-server-protocol.h		\
-	tty.c					\
-	evdev.c					\
-	drm.c					\
-	shm.c
+	shm.c					\
+	$(drm_compositor_sources)		\
+	$(x11_compositor_sources)		\
+	$(wayland_compositor_sources)		\
+	$(drm_sources)
 
 udevrulesddir = $(sysconfdir)/udev/rules.d
 

compositor/compositor.c

@@ -18,6 +18,8 @@
 
 #define _GNU_SOURCE
 
+#include "config.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
@@ -1462,12 +1464,22 @@ int main(int argc, char *argv[])
 
 	display = wl_display_create();
 
+	ec = NULL;
+
+#if BUILD_WAYLAND_COMPOSITOR
 	if (getenv("WAYLAND_DISPLAY"))
 		ec = wayland_compositor_create(display, width, height);
-	else if (getenv("DISPLAY"))
+#endif
+
+#if BUILD_X11_COMPOSITOR
+	if (ec == NULL && getenv("DISPLAY"))
 		ec = x11_compositor_create(display, width, height);
-	else
+#endif
+
+#if BUILD_DRM_COMPOSITOR
+	if (ec == NULL)
 		ec = drm_compositor_create(display, option_connector);
+#endif
 
 	if (ec == NULL) {
 		fprintf(stderr, "failed to create compositor\n");