diff -r cef43609a374 -r 0133e565e072 CMakeLists.txt
--- a/CMakeLists.txt	Sat Dec 14 23:00:01 2019 +0200
+++ b/CMakeLists.txt	Wed Jan 01 17:45:56 2020 +0200
@@ -2,6 +2,7 @@
 cmake_minimum_required(VERSION 2.8.12)
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake")
 include(cotire)
+set(OpenGL_GL_PREFERENCE GLVND)
 find_package(Qt5Widgets REQUIRED)
 if (Qt5Widgets_VERSION VERSION_LESS 5.5.0)
 	message(FATAL_ERROR "Qt5 version 5.5 required")
@@ -51,6 +52,7 @@
 	src/colors.h
 	src/document.h
 	src/documentmanager.h
+	src/header.h
 	src/invert.h
 	src/libraries.h
 	src/main.h