040000 tree 0f3e2b6c617b281cd87b97e714b0d4a98afdb71b	dynamic_thread
040000 tree 385a12bda7d512e90fe30c8f241f308f054c1444	no-multithreading
040000 tree 124acf6cda38cc0a1a8d7d5d7dcf0468bd5ebb44	thread_apis
040000 tree 88cf5f641b9e32f427d05aeed1f0a3c27765798b	thread_init