message: Fixed the cmake rt library
diff: @@ -226,6 +226,15 @@ if (UNIX)
  target_link_libraries(sharedmem_tester Threads::Threads)
  endif (UNIX)
  +if (UNIX AND NOT APPLE)
  + target_link_libraries(dataframe_tester rt)
  + target_link_libraries(vectors_tester rt)
  + target_link_libraries(date_time_tester rt)
  + target_link_libraries(filebase_tester rt)
  + target_link_libraries(mmfile_tester rt)
  + target_link_libraries(sharedmem_tester rt)
  +endif()
  +
  # Enable ctest, testing so we can see if unit tests pass or fail in CI
  enable_testing()
  add_test(NAME dataframe_tester
  