Make it possible to enable/disable the various compositors from configure
diff --git a/configure.ac b/configure.ac
index 31654a6..e3c3336 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,6 +29,31 @@
[have_poppler=yes], [have_poppler=no])
AM_CONDITIONAL(HAVE_POPPLER, test "x$have_poppler" = "xyes")
+
+AC_ARG_ENABLE(x11-compositor, [ --enable-x11-compositor],,
+ enable_x11_compositor=yes)
+AM_CONDITIONAL(ENABLE_X11_COMPOSITOR, test x$enable_x11_compositor == xyes)
+if test x$enable_x11_compositor == xyes; then
+ AC_DEFINE([BUILD_X11_COMPOSITOR], [1], [Build the X11 compositor])
+fi
+
+
+AC_ARG_ENABLE(drm-compositor, [ --enable-drm-compositor])
+AM_CONDITIONAL(ENABLE_DRM_COMPOSITOR, test x$enable_drm_compositor == xyes)
+if test x$enable_drm_compositor == xyes; then
+ AC_DEFINE([BUILD_DRM_COMPOSITOR], [1], [Build the DRM compositor])
+fi
+
+
+AC_ARG_ENABLE(wayland-compositor, [ --enable-wayland-compositor])
+AM_CONDITIONAL(ENABLE_WAYLAND_COMPOSITOR,
+ test x$enable_wayland_compositor == xyes)
+if test x$enable_wayland_compositor == xyes; then
+ AC_DEFINE([BUILD_WAYLAND_COMPOSITOR], [1],
+ [Build the Wayland (nested) compositor])
+fi
+
+
PKG_CHECK_MODULES(CAIRO_GL, [cairo-gl],
[have_cairo_gl=yes], [have_cairo_gl=no])
AS_IF([test "x$have_cairo_gl" = "xyes"],