if (CHECK_TARGET_MESSAGES)
  if (NOT actual_stdout MATCHES "Built target CustomTarget")
    set (RunCMake_TEST_FAILED "Not found expected 'Built target' message.")
  endif()
else()
  if (actual_stdout MATCHES "Built target CustomTarget")
    set (RunCMake_TEST_FAILED "Found unexpected 'Built target' message.")
  endif()
endif()