DDG4: re-arrange to use new dd4hep_add_dictionary with TARGET

DDG4/CMakeLists.txt

@@ -40,19 +40,19 @@ if(NOT Geant4_gdml_FOUND)
 else()
   dd4hep_print("|++> Geant4 GDML library present....build G4 GDML components")
 endif()
-#-----------------------------------------------------------------------------------
-dd4hep_add_dictionary( G__DDG4
-  SOURCES python/DDG4Dict.C
-  USES    DD4hep::DDCore DD4hep::DDParsers DD4hep::DDG4 Geant4::Interface
-  )
 #---------------------------  Plugin library for the simulation framework  ---------
 dd4hep_add_plugin(DDG4Plugins
   SOURCES   plugins/*.cpp
   GENERATED G__DDG4.cxx
   USES      DD4hep::DDG4 DD4hep::DDParsers ${XML_LIBRARIES} ROOT::Core ${CLHEP} 
+)
+dd4hep_add_dictionary( G__DDG4
+  TARGET DDG4Plugins
+  SOURCES python/DDG4Dict.C
+  USES    DD4hep::DDCore DD4hep::DDParsers DD4hep::DDG4 Geant4::Interface
   )
-#---------------------------  Plugin library for the simulation framework  ---------
 
+#---------------------------  Plugin library for the simulation framework  ---------
 if(TARGET Python::Python AND TARGET ${DD4HEP_ROOT_PYTHON})
   dd4hep_print("|++> Python found, creating DDG4Python Dictionary")
   dd4hep_add_dictionary(G__DDG4Python