# Add each unit test category. foreach( unit_test_category Add-ons general FDM Input Main Navaids Network Instrumentation Scripting AI Airports Autopilot ) add_subdirectory(${unit_test_category}) endforeach( unit_test_category ) set(TESTSUITE_SOURCES ${TESTSUITE_SOURCES} PARENT_SCOPE ) set(TESTSUITE_HEADERS ${TESTSUITE_HEADERS} PARENT_SCOPE )