040000 tree c9642decf4ef1cad02358e5077e118e9beeec37e	bsd
040000 tree 60afa9edcd51ad7a781910839e2946f31e499778	linux
040000 tree 761b325fac7c1f75e9dfa4ba3c93f130de4deac8	mingw32
040000 tree 9d6169ef1c061fd523f543f7bb751f9ae8a1db2f	posix