diff -r 8869b5256720 -r fc47fc4af6bd QTfrontend/CMakeLists.txt
--- a/QTfrontend/CMakeLists.txt	Wed Jan 24 21:05:34 2018 +0100
+++ b/QTfrontend/CMakeLists.txt	Wed Jan 24 22:20:10 2018 +0100
@@ -1,5 +1,7 @@
 find_package(Qt5 COMPONENTS Core Gui Network Svg Xml OpenGL)
 
+include_directories(${Qt5Core_PRIVATE_INCLUDE_DIRS})
+
 include(CheckLibraryExists)
 
 find_package(SDL2 REQUIRED)