Reworks CMake wiring for Qt6 codegen include order

Adds missing toolchain packages and include dirs so generated headers resolve.

qt6-after/qt6-migrated-legatus/Lts/Services/NotificationManagement/CMakeLists.txt

@@ -22,6 +22,10 @@ SET(SRCS_common
 IF(BUILD_RTI)
   CODEGEN_IDL_SVC(SRCS_common ${xml_FILE})
 ENDIF()
+# The enums stub copy below would overwrite the rtiddsgen-generated
+# <svc>_enums.hpp (RTIDDSGEN on <svc>_enums.idl writes the same build-dir
+# path) on every cmake re-configure. Only keep it for BUILD_RTI=OFF.
+IF(NOT BUILD_RTI)
 # Stub file for compilation (fallback when no IDL exists)
 CONFIGURE_FILE(
   ${CMAKE_SOURCE_DIR}/include/NotificationManagement/nom_enums.hpp.stub
@@ -29,10 +33,15 @@ CONFIGURE_FILE(
   COPYONLY
 )
 
+ENDIF()
 # Generate nom_db_impl.cpp/.h, nom_db.h
 IF(BUILD_RTI)
   CODEGEN_DATABASE(SRCS_common ${xml_FILE})
 ENDIF()
+# The enums stub copy below would overwrite the rtiddsgen-generated
+# <svc>_enums.hpp (RTIDDSGEN on <svc>_enums.idl writes the same build-dir
+# path) on every cmake re-configure. Only keep it for BUILD_RTI=OFF.
+IF(NOT BUILD_RTI)
 # Copy nom_enums.hpp.stub to build directory for compilation
 CONFIGURE_FILE(
   ${CMAKE_SOURCE_DIR}/include/NotificationManagement/nom_enums.hpp.stub
@@ -41,6 +50,7 @@ CONFIGURE_FILE(
 )
 
 
+ENDIF()
 # Generate *.cpp/*.hpp from idl
 RTIDDSGEN(SRCS_common nom_enums.idl)
 RTIDDSGEN(SRCS_common nom.idl)