Allow to show header in qtc6

serializers/CMakeLists.txt

@@ -4,7 +4,9 @@ add_library(akonadi_serializer_kalarm MODULE)
 target_sources(akonadi_serializer_kalarm PRIVATE
     akonadi_serializer_kalarm.cpp
     kaeventformatter.cpp
-)
+    akonadi_serializer_kalarm.h
+    kaeventformatter.h
+    )
 
 ecm_qt_declare_logging_category(akonadi_serializer_kalarm
         HEADER akonadi_serializer_kalarm_debug.h

src/CMakeLists.txt

@@ -17,6 +17,19 @@ target_sources(KF5AlarmCalendar PRIVATE
     collectionattribute.cpp
     compatibilityattribute.cpp
     eventattribute.cpp
+    kacalendar.h
+    karecurrence.h
+    akonadi.h
+    alarmtext.h
+    identities.h
+    kaevent.h
+    kadatetime.h
+    datetime.h
+    repetition.h
+    version.h
+    collectionattribute.h
+    compatibilityattribute.h
+    eventattribute.h
 )
 
 ecm_qt_declare_logging_category(KF5AlarmCalendar HEADER kalarmcal_debug.h IDENTIFIER KALARMCAL_LOG CATEGORY_NAME org.kde.pim.kalarmcal