--- cube/CMakeLists.txt.orig	2019-06-10 22:07:04 UTC
+++ cube/CMakeLists.txt
@@ -50,10 +50,12 @@ if(UNIX AND NOT APPLE) # i.e. Linux
 
     if(BUILD_WSI_XCB_SUPPORT)
         find_package(XCB REQUIRED)
+        include_directories(SYSTEM ${XCB_INCLUDE_DIR})
     endif()
 
     if(BUILD_WSI_XLIB_SUPPORT)
         find_package(X11 REQUIRED)
+        include_directories(SYSTEM ${X11_Xlib_INCLUDE_PATH})
     endif()
 
     if(BUILD_WSI_WAYLAND_SUPPORT)