File with_qt6.pacth of Package zeit

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f9c6b15..d0e19a5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required (VERSION 3.5)
 project(zeit)
 
+option(WITH_QT6        "Build with Qt6"            OFF)
 option(BUILD_TESTS        "Build tests"            OFF)
 
 set(VERSION_MAJOR 0)