I have a Mac running High Sierra, version 10.13.6. When running MacPorts I get the following error message that I should update my Xcode installation:
Error: The installed version of Xcode (8.3.1) is too old to use on the installed OS version. Version 9.3 or later is recommended on Mac OS X 10.13.
xcodebuild -version confirms this:
Build version 8E1000a
But when I launch App Store I can't find any updates.
Has anyone an idea how I can update Xcode including command line utilities?