macOS Mojave: Fix invalid active developer path

After upgrading to Mojave, I ran git pull and saw this terrible error.

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

Fortunately, this is easy to fix. Read on.


xcode-select --install

To fix this, it seems that you'll need to explicitly agree to the license agreement.


If you end up with multiple versions of Xcode, you can select the version you want with:

xcode-select --switch /Applications/

Or if you want to run command line tools without Xcode:

xcode-select --switch /Library/Developer/CommandLineTools

See this article for more information.