--- CMakeLists.txt.orig	2023-03-08 16:08:22 UTC
+++ CMakeLists.txt
@@ -30,7 +30,7 @@ include(misc)
 # CMake modules
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/cmake" "${CMAKE_CURRENT_SOURCE_DIR}/external/cmake-modules")
 include(misc)
-include(GetGitRevisionDescription)
+#include(GetGitRevisionDescription)
 
 # C++
 set(CMAKE_CXX_STANDARD 17)
@@ -40,14 +40,14 @@ set(VERSION_SUFFIX "-git-" CACHE STRING "")
 set(VERSION_NAKED ${PROJECT_VERSION})
 set(VERSION_SUFFIX "-git-" CACHE STRING "")
 
-if (VERSION_SUFFIX STREQUAL "-git-")
+if (FALSE AND VERSION_SUFFIX STREQUAL "-git-")
     git_describe(GIT_DESC --tags)
     if ( NOT ${GIT_DESC} MATCHES ".*NOTFOUND" )
         set(PROJECT_VERSION ${GIT_DESC})
     endif()
-elseif(VERSION_SUFFIX MATCHES "^\\..*")
+elseif(FALSE AND VERSION_SUFFIX MATCHES "^\\..*")
     set(PROJECT_VERSION "${PROJECT_VERSION}${VERSION_SUFFIX}")
-elseif(NOT VERSION_SUFFIX STREQUAL "")
+elseif(FALSE AND NOT VERSION_SUFFIX STREQUAL "")
     set(PROJECT_VERSION "${PROJECT_VERSION}+${VERSION_SUFFIX}")
 endif()
 
@@ -90,8 +90,15 @@ endif()
 
 # Qt
 #find_package(Qt5Qml QUIET)
-set(QT_VERSION_MAJOR 5)
-find_package(QT NAMES Qt5 Qt6 COMPONENTS Core QUIET)
+option(WITH_QT5 "Build against Qt5" ON)
+option(WITH_QT6 "Build against Qt6" OFF)
+if ( WITH_QT5 )
+    set(QT_VERSION_MAJOR 5)
+endif()
+if ( WITH_QT6 )
+    set(QT_VERSION_MAJOR 6)
+endif()
+find_package(QT NAMES Qt${QT_VERSION_MAJOR} COMPONENTS Core QUIET)
 find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Core Widgets Xml UiTools Concurrent Network Svg REQUIRED)
 message(STATUS "Using Qt ${QT_VERSION_MAJOR}")