Fix translations for Qt 6

cmake/Translations.cmake

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8.11)
+cmake_minimum_required(VERSION 3.0)
 
 find_program(GETTEXT_XGETTEXT_EXECUTABLE xgettext)
 if(NOT GETTEXT_XGETTEXT_EXECUTABLE)
@@ -73,5 +73,9 @@ macro(add_po outfiles po_prefix)
     file(APPEND ${_qrc} "<file>${po_prefix}${_lang}.qm</file>")
   endforeach(_lang)
   file(APPEND ${_qrc} "</qresource></RCC>")
-  qt5_add_resources(${outfiles} ${_qrc})
+  if(WITH_QT6)
+    qt6_add_resources(${outfiles} ${_qrc})
+  else()
+    qt5_add_resources(${outfiles} ${_qrc})
+  endif()
 endmacro(add_po)