cmake: Add X11 include path for tools

Fixes compilation issues for case when X11 is not in a standard location

diff --git a/cmake/tools/CMakeLists.txt b/cmake/tools/CMakeLists.txt
index c05ced43a72084d3015af6b81608ae0706a1a2c9..4678bddf4911ba37e62796a6ec21e3de7da11c3b 100644 (file)
--- a/cmake/tools/CMakeLists.txt
+++ b/cmake/tools/CMakeLists.txt
@@ -48,6 +48,7 @@ set (dbus_launch_SOURCES
      ${dbus_launch_SOURCES}
      ../../tools/dbus-launch-x11.c
 )
+include_directories(${X11_INCLUDE_DIR})
 endif(DBUS_BUILD_X11)
 
 set (dbus_cleanup_sockets_SOURCES