040000 tree 1516026c491d5d0360e3f8f6c002fe5a6d21b287	android
040000 tree e2c151eb8dd6fc65dcc484ee301a64f699d65f56	crt
040000 tree 352ad218dffe91ee83ba00cd21bdf19d174197fb	cxx-stl
040000 tree 60e48eb2c2bef90615af7ec657953ff409e0044f	host-tools