platforms are welcome.

Platforms may move between tiers between major release lines. The table below

will reflect those changes.

| AIX | ppc64be >=power7 | >= 7.2 TL02 | Tier 2 | |

| FreeBSD | x64 | >= 11 | Experimental | Downgraded as of Node.js 12 ^[7](#fn7) |

<em id="fn1">1</em>: GCC 6 is not provided on the base platform. Users will

need the

[Toolchain test builds PPA](https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test?field.series_filter=xenial)

or similar to source a newer compiler.

<em id="fn2">2</em>: GCC 6 is not provided on the base platform. Users will

need the

[devtoolset-6](https://www.softwarecollections.org/en/scls/rhscl/devtoolset-6/)

or later to source a newer compiler.

<em id="fn3">3</em>: Older kernel versions may work for ARM64. However the

Node.js test infrastructure only tests >= 4.5.

<em id="fn4">4</em>: On Windows, running Node.js in Windows terminal emulators

like `mintty` requires the usage of [winpty](https://github.com/rprichard/winpty)

for the tty channels to work (e.g. `winpty node.exe script.js`).

In "Git bash" if you call the node shell alias (`node` without the `.exe`

extension), `winpty` is used automatically.

<em id="fn5">5</em>: The Windows Subsystem for Linux (WSL) is not

supported, but the GNU/Linux build process and binaries should work. The

community will only address issues that reproduce on native GNU/Linux

systems. Issues that only reproduce on WSL should be reported in the

<em id="fn6">6</em>: Running Node.js on x86 Windows should work and binaries

are provided. However, tests in our infrastructure only run on WoW64.

Furthermore, compiling on x86 Windows is Experimental and

may not be possible.

<em id="fn7">7</em>: The default FreeBSD 12.0 compiler is Clang 6.0.1, but

FreeBSD 12.1 upgrades to 8.0.1. Other Clang/LLVM versions are available

via the system's package manager, including Clang 9.0.