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040000 tree 320227d4678b5b268a8279ea2700ec9f136e4d56	darwin
040000 tree 2c7ac8906e43900806c708b31cfbe366e57e4fd2	hpux
040000 tree 731f51205504f0a810b24bce32514acfc0b67568	linux
040000 tree 009098fe1952db8a3f87eee19ca88c3adb3dd998	mingw32
040000 tree 2fd4180f9bbc392a061669b1ada67e707f3b2c2a	nvptx
040000 tree e123f8a4bbaf7b0bee5fbe74ed00e1e14f74787d	posix
040000 tree 626109da5caddc0436995f8fce5434b06d0dbe57	rtems