| # Minimum Requirements |
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| ## Operating Systems |
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| ### Linux |
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| Kernel version 2.6.23 or later. [_This depends on architecture though, we need to have specific builder for this._] Linux/ARMv5 requires much newer kernels, at least v3.1 (for `__kuser_cmpxchg64`). |
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| We don't support CentOS 5. Kernel is too old (2.6.18). |
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| For little-endian MIPS64, kernel version [4.1 is known to fail, and 4.8 works](https://golang.org/issue/16848). |
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| ### Windows |
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| Windows XP (w/ Service Pack 2) or higher. But we don't currently (2016-09-23) have a Windows XP running. That is https://github.com/golang/go/issues/10267 |
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| We run builders testing Go on Windows Server 2008 R2 Datacenter Edition. That is basically Windows 7 or above. |
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| ### macOS (née OS X, aka Darwin) |
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| macOS Sierra (10.12) requires Go 1.7.1. We have not yet (as of 2016-09-23) backported the time system call fixes to any earlier Go versions. See https://github.com/golang/go/issues/16352. |
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| Go only supports OS X 10.8 (Mountain Lion) or newer. We only have builders for 10.8, 10.10, and 10.11 as of 2016-09-23. |
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| Go tip doesn't compile on OS X 10.7 (Lion) but binaries MAY work there. Maybe. No builders, no promises. We don't recommend it. |
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| OS X 10.6 (Snow Leopard) is explicitly unsupported. See https://github.com/golang/go/issues/9511 |
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| ### OpenBSD |
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| The current officially supported -stable versions only. See https://golang.org/wiki/OpenBSD for details. |
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| ### DragonFly |
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| Generally only the latest release version only. We have a builder, but it's not the most stable of our ports. |
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| ### FreeBSD |
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| FreeBSD 8 and up according to https://golang.org/doc/install, but I suspect we might need something newer than 8. We only run builders testing FreeBSD 9.3 and 10.1. |
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| ### Native Client |
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| pepper_39 or newer. |
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| ### Solaris |
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| illumos (former OpenSolaris 10) based distributions or Oracle Solaris 11+. |
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| ## Architectures |
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| ### x86 |
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| See https://golang.org/doc/install/source#environment |
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| Set GO386=387 or GO386=sse2 for older processors. |
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| ### arm |
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| See https://golang.org/doc/install/source#environment |
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| * GOARM=5: use software floating point; when CPU doesn't have VFP co-processor |
| * GOARM=6: use VFPv1 only; default if cross compiling; usually ARM11 or better cores (VFPv2 or better is also supported) |
| * GOARM=7: use VFPv3; usually Cortex-A cores |
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| ### arm64 |
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| All ARMv8-A processors. |
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| ### ppc64 (big endian) |
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| "Big-endian 64-bit PowerPC (linux/ppc64) only requires the POWER5 architecture." (from |
| https://golang.org/doc/go1.7#ports) |
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| ### ppc64le (little endian) |
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| "The experimental port to Linux on little-endian 64-bit PowerPC (linux/ppc64le) now requires the POWER8 architecture or later." (from |
| https://golang.org/doc/go1.7#ports) |
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| ### mips64 (big endian) |
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| MIPS III or higher. Builder is using MIPS64r2. |
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| ### mips64le (little endian) |
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| MIPS III or higher in little endian mode. Builders are using Loongson 2E/2F. |
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| ### s390x |
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| z196+ |
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| ### mips (big endian) and mipsle (little endian) |
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| MIPS32r1, with FPU or kernel FPU emulation |
