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It seems after every MacOS update these days I get this reoccurring issue about not being able to build GYP in a node project. I got tired of looking up the references to fix it and am consolidating them here for future reference.
Note: October 2020 update at the bottom (x-code 12).

The Error

The error that is thrown (or close to it is):

gyp ERR! build error
gyp ERR! stack Error: `make` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onExit (/usr/local/Cellar/node@10/10.18.1/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:191:23)
gyp ERR! stack     at ChildProcess.emit (events.js:198:13)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:248:12)
gyp ERR! System Darwin 19.3.0
gyp ER

The Fix

XCode CLTools is require for this to work. I don’t know the details, only what has corrected this for me in the past.

Check if installed:
/usr/sbin/pkgutil --packages | grep CLTools

Nothing will be returned if they are not present. If they are, ¯\_(ツ)_/¯, more research I guess.

Install XCode cli only (may need to use sudo:
xcode-select --install

If you received the error, “xcode-select: error: command line tools are already installed, use “Software Update” to install updates” you will need to remove the xtools first. Per the documentation you do that by:
sudo rm -rf /Library/Developer/CommandLineTools

Run the install again, and all should install as expected (may need to use sudo).
xcode-select --install

Once the install is complete recheck if CLTools are present:
/usr/sbin/pkgutil --packages | grep CLTools

You should received a response something like:

That’s it, try your build again.

October 2020 Update Note:

I still run into this issue after most updates. It happened again after the macOS 10.15.7 update. Though this time when running the install (sudo xcode-select --install) a message popped up that the software could not be found on the server. After some Duck Duck Googling I found the X-Code CLI Tools download. After installing this I was back in action and able to build again.


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