040000 tree 21b345f747e1cea126762cd21b2f0eb6fc4a4fa7	clang
040000 tree 7ed52277303719c65a25e975ae8a067f45f3cd6a	gcc
040000 tree 6ea517eac9dece6ac9cf445a77ef1865830d4811	host-gcc
040000 tree b654b802264dc0069509f0bddf63c2e84b7e297a	xcc