040000 tree dde1d1bd17312d443d55d12c3579e85fc49f6333	android
040000 tree 5786c082ec1a325c130e950e74bcbd7cf262d049	cpufeatures
040000 tree 515540597685b4516a44022ec2a59b831d7a0181	cxx-stl
040000 tree 2eeda17f80915efcbb818c808d943311e210138d	host-tools