Ticket #50424: patch-choose_qt.diff

cmake/Modules/Geant4InterfaceOptions.cmake

@@ -69 +69 @@
 # Configure Qt Support if needed (CROSSPLATFORM).
 #
 option(GEANT4_USE_QT "Build Geant4 with Qt4 support" OFF)
+option(GEANT4_FORCE_QT4 "When building Qt support require Qt4 only" OFF)
+mark_as_advanced(GEANT4_FORCE_QT4)
 
 if(GEANT4_USE_QT)
   # Find and configure Qt and OpenGL - require 4
@@ -82 +84 @@
     set(QT_USE_IMPORTED_TARGETS ON)
   endif()
 
-  find_package(Qt5Core QUIET)
-  find_package(Qt5Gui QUIET)
-  find_package(Qt5Widgets QUIET)
-  find_package(Qt5OpenGL QUIET)
-  find_package(Qt5PrintSupport QUIET)
+  if(NOT GEANT4_FORCE_QT4)
+    find_package(Qt5Core QUIET)
+    find_package(Qt5Gui QUIET)
+    find_package(Qt5Widgets QUIET)
+    find_package(Qt5OpenGL QUIET)
+    find_package(Qt5PrintSupport QUIET)
+  endif()
 
   if(Qt5Core_FOUND
       AND Qt5Gui_FOUND