--- tools/assimp_qt_viewer/glview.cpp	2017-07-28 22:33:41.000000000 +0200
+++ tools/assimp_qt_viewer/glview.cpp	2017-08-05 09:47:00.697027943 +0200
@@ -3,6 +3,9 @@
 /// \author smal.root@gmail.com
 /// \date   2016
 
+// Avoid conflict for types GLsizeiptr and GLintptr
+#define GL_VERSION_1_5
+
 #include "glview.hpp"
 
 // Header files, OpenGL.