Multiple Xcode versions on macOS

[roblabs]

It is most certainly possible to have different versions of Xcode on your macOS development machine.

How To

• Before you upgrade Xcode using App Store. Be sure to move Xcode 11 to its own folder before upgrading.

  • A great example: in the Xcode 11.7 to Xcode 12 era. If you wanted to keep both versions be sure to save off Xcode 11

• Download older versions of Xcode: https://developer.apple.com/download/more

• Example, Make a new directory in /Applications, for example Xcode-10.1

  • Move the file Xcode_10.1.xip to that folder and extract

• Explicitly set your Xcode path, in case you have a Xcode 10 or 11 or a Beta installed

  • xcode-select -print-path

    • Print or change the path to the active developer directory. This directory
      controls which tools are used for the Xcode command line tools (for example,
      xcodebuild) as well as the BSD development commands (such as cc and make).

  • sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer/
  • sudo xcode-select --switch /Applications/Xcode-10.1/Xcode.app/Contents/Developer/
    • # Use Xcode 10.1 for upgrading Swift 3 projects
  • sudo xcode-select --switch /Applications/Xcode-11.7/Xcode.app/Contents/Developer/
  • sudo xcode-select --switch /Applications/Xcode-beta.app/Contents/Developer/

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XCS

• For Xcode Servers (XCS), it appears that you can only use one version. In that case you would be best using multiple machines.