Qt6 migration fixes: RTI DDS alias targets, ErrorMessage namespace, DDS header include path

qt6-after/qt6-migrated-legatus/Lts/Services/ExerciseManagement/ModuleTests/CMakeLists.txt

@@ -18,7 +18,7 @@ IF(BUILD_TESTING AND TARGET svcExmClient)
     svcExmClient
     svcAsmClient
     LtsCommandLineParser
-    ddsconnector
+    $<IF:$<TARGET_EXISTS:ddsconnector>,ddsconnector,>
     nglcoreapplication
   )
   IF(NOT BUILD_RPM)
@@ -45,7 +45,7 @@ IF(BUILD_TESTING AND TARGET svcExmClient)
   TARGET_COMPILE_DEFINITIONS(exmStateMachineTest PUBLIC EXM_OBJECT_EXERCISE_NO_HANDLER)
   TARGET_LINK_LIBRARIES(exmStateMachineTest
     dbAdminCopyExercise
-    ddsconnector
+    $<IF:$<TARGET_EXISTS:ddsconnector>,ddsconnector,>
     nglcoreapplication
     NGLLogger
     ngltools

qt6-after/qt6-migrated-legatus/Lts/Services/ExerciseManagement/ModuleTests/exm_statemachine_test.cpp

@@ -19,7 +19,7 @@
 #include <ExerciseManagement/settings.h>
 #include <ExerciseManagement/logger.h>
 
-#include <QCoreApplication>
+#include <QtCore/QCoreApplication>
 #include <QDebug>
 #include <QSignalSpy>
 #include <QTest>

qt6-after/qt6-migrated-legatus/Lts/Services/ExerciseManagement/ModuleTests/exm_statemachine_test.h

@@ -7,7 +7,7 @@
 
 #pragma once
 
-#include <QObject>
+#include <QtCore/QObject>
 #include <memory>
 #include <ExerciseManagement/exm_db.h>
 #include <ngldb/db_service_handler.h>

qt6-after/qt6-migrated-legatus/Lts/Services/ExerciseManagement/ModuleTests/exm_tests.cpp

@@ -11,7 +11,7 @@
 
 #include <nglapplication/nglcoreapplication.h>
 #include <LtsCommandLineParser/LtsCommandLineParser.h>
-#include <QTimer>
+#include <QtCore/QTimer>
 #include <QTest>
 
 #include <ExerciseManagement/exm_ftc.h>