TetraIF migration and Unittest Implementation for it

Entire-Checkpoint: 14d1fef0cf36

qt6-after/qt6-migrated-legatus/Lts/Proxies/TrainingAreaBase/CMakeLists.txt

@@ -44,6 +44,11 @@ SET(SRCS_telegrams
   training_area_telegrams.h
 )
 NGL_ADD_LIBRARY(AAR SV WS HLA tabTelegrams STATIC ${SRCS_telegrams})
+# This static library is linked into shared libraries (CoPrtCnv among others),
+# so its objects have to be position independent.
+IF(TARGET tabTelegrams)
+  SET_TARGET_PROPERTIES(tabTelegrams PROPERTIES POSITION_INDEPENDENT_CODE ON)
+ENDIF()
 NGL_TARGET_INCLUDE_DIRECTORIES(tabTelegrams
   PUBLIC
     ${CMAKE_CURRENT_SOURCE_DIR}/..