Raspi 4B BSP编译RTT错误

E:\10.Puffer\2.Code\RT-Thread\rt-thread-5.1.0\components\dfs\dfs_v2\filesystems\devfs\devfs.c: In function 'dfs_devfs_open':
E:\10.Puffer\2.Code\RT-Thread\rt-thread-5.1.0\components\dfs\dfs_v2\filesystems\devfs\devfs.c:34:32: error: 'O_DIRECTORY' undeclared (first use in this function); did you mean 'FT_DIRECTORY'?
   34 |             && !(file->flags & O_DIRECTORY))