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040000 tree d16704d7e8076ede68b9bcee50f8a5cfb3d3a854	freebsd
040000 tree e19dff5c4468a32687d7752ed0d053ef3199bba3	linux
040000 tree 89e357134054da96a0cb5d8361ffe673692a0512	netbsd
040000 tree f41ea528b80e78b2494106e75658e8ac10ff1fa7	openbsd
040000 tree 14d7c40f378fa01bbd9a9fd5ad6f0d55e2b6a692	posix
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040000 tree 8e1f0b12cb5da8c2a59b434698b12bf0828422aa	windows