Conflict between arguments "--files, --file-list" and GenerateFinalExternalFunctionMap()

[hribz]

When I use arguments "--files, --file-list" to generate external function map for specific files, panda still generate final external function map for all files in compile_commands.json, and leading to such error:

Traceback (most recent call last):
  File "/usr/bin/panda", line 725, in <module>
    main(sys.argv)
  File "/usr/bin/panda", line 721, in main
    ExecuteFullCompilationDatabaseAction(opts, cdb)
  File "/usr/bin/panda", line 700, in ExecuteFullCompilationDatabaseAction
    GenerateFinalExternalFunctionMap(opts, cdb)
  File "/usr/bin/panda", line 548, in GenerateFinalExternalFunctionMap
    for efmcontent in p.map(getExtDefMap,
  File "/usr/lib/python3.10/multiprocessing/pool.py", line 367, in map
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/usr/lib/python3.10/multiprocessing/pool.py", line 774, in get
    raise self._value
FileNotFoundError: [Errno 2] No such file or directory: '/cmake-projects/opencv/3rdparty/protobuf/src/google/protobuf/repeated_field.cc.extdef'