Error Message "Xcode alone is not sufficient on Sierra"

ruby xcode python-3.x homebrew command-line-tool

Let me explain this myself so people won't make the same mistakes.

When I saw the last line of the error message

Error: Xcode alone is not sufficient on Sierra.Install the Command Line Tools:xcode-select --install

My thought was: I already have Xcode why the system ask me to "reinstall" it. However, thanks for @SamiKuhmonen @ Beartech @patrick kuang suggestion, I search a page (in Mandarin). xcode-select --install does not reinstall the whole Xcode. It means install some missing command line tools which is required by installing Ruby.

ruby xcode python-3.x homebrew command-line-tool

Trying to install k8s package via brew , I just got the same issue a while ago saying in the terminal :

Error: Xcode alone is not sufficient on Sierra.
Install the Command
Line Tools: xcode-select --install

You need to download *.dmg file; named Command Line Tools (macOS x.x.x) for XCode N . Search on it here : https://developer.apple.com/download/more/ . You must have developer account.

Then, congrats! 🎉

update for 2019

macOS Mojave 10.14.5

Use Xcode10.2 for macOS 10.14

ruby xcode python-3.x homebrew command-line-tool

I had the same issue in my Macbook Pro on Sierra. Apart from updating Xcode from the App Store, I also installed the command line utilities using the xcode-select --install command.