--- subprojects/appmenu-gtk-module/src/CMakeLists.txt.orig	2019-03-02 16:02:35 UTC
+++ subprojects/appmenu-gtk-module/src/CMakeLists.txt
@@ -13,6 +13,10 @@ set(MODULE_SOURCES
     platform.h
     consts.h)
 
+find_package(X11 REQUIRED)
+if (X11_FOUND)
+    include_directories(${X11_INCLUDE_DIR})
+endif(X11_FOUND)
 get_filename_component(GTK3_LIBDIR ${GTK3_GTK_LIBRARY} DIRECTORY)
 set(GTK3_MODULEDIR ${GTK3_LIBDIR}/gtk-3.0/modules)
 add_library(appmenu-gtk3-module MODULE ${MODULE_SOURCES})
@@ -27,7 +31,7 @@ if(GTK2_FOUND)
     get_filename_component(GTK2_LIBDIR ${GTK2_GTK_LIBRARY} DIRECTORY)
     set(GTK2_MODULEDIR ${GTK2_LIBDIR}/gtk-2.0/modules)
     add_library(appmenu-gtk2-module MODULE ${MODULE_SOURCES})
-    target_include_directories(appmenu-gtk2-module PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../lib)
+    target_include_directories(appmenu-gtk2-module PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../lib )
     target_link_libraries(appmenu-gtk2-module PRIVATE appmenu-gtk2-parser GLIB2::GIO_UNIX GTK2::GTK)
     set_target_properties(appmenu-gtk2-module PROPERTIES
         OUTPUT_NAME appmenu-gtk-module