doc: v14 macOS arm64 support

[mrienstra]

Documentation* (both official and unofficial) regarding the status of v14 on macOS arm64 hardware is pretty confusing, mostly the word is "no go", but I believe the current status is that it's working. I'm not sure which "support tier" is applicable, maybe "Experimental"? Also not clear from https://github.com/nodejs/node/blob/master/doc/changelogs/CHANGELOG_V14.md when it might've started building.

I'd like to add a row for "macOS arm64" to https://github.com/nodejs/node/blob/v14.x/BUILDING.md, thoughts?

Operating System	Architectures	Versions	Support Type	Notes
macOS	x64	>= 10.11	Tier 1
macOS	arm64	>= 14.?	Experimental
SmartOS	x64	>= 18	Tier 2

Starting with node v16.3.0, I installed & used nvm 0.38.0 (nvm -v) to install v14.17.6 (node -v) arm64 (node -p "process.arch"), on macOS 11.5.2 (sw_vers -productVersion) arm64 (uname -m).

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• For example: Nodejs 14.x doesn't compile on ARM OSX (M1) #36161

[richardlau]

Documentation (both official and unofficial) regarding the status of v14 on macOS arm64 hardware is pretty confusing, mostly the word is "no go", but I believe the current status is that it's working. I'm not sure which "support tier" is applicable, maybe "Experimental"? Also not clear from https://github.com/nodejs/node/blob/master/doc/changelogs/CHANGELOG_V14.md when it might've started building.

Probably 14.17.0 which included #38051. We don't test or build Node.js 14 on macOS arm64 so Experimental is a reasonable tier.

I'd like to add a row to https://github.com/nodejs/node/blob/v14.x/BUILDING.md, thoughts?

If you do open a PR please open it against the staging branch (v14.x-staging).

Operating System Architectures Versions Support Type Notes
macOS x64 >= 10.11 Tier 1
macOS arm64 >= 14.? Experimental
SmartOS x64 >= 18 Tier 2
Starting with node v16.3.0, I installed & used nvm 0.38.0 (nvm -v) to install v14.17.6 (node -v) arm64 (node -p "process.arch"), on macOS 11.5.2 (sw_vers -productVersion) arm64 (uname -m).

The "Versions" column is the version of macOS (not Node.js) so should probably be 11 (I don't think earlier versions of macOS are available for arm64).

[mrienstra]

The "Versions" column is the version of macOS (not Node.js) so should probably be 11 (I don't think earlier versions of macOS are available for arm64).

Whoops, yup, that's clearly the case when I look at the entire table and not just the existing macOS row, thanks! 🤦

[mrienstra]

PR here: #40127