CLI Tool Problem

[Joshua Root]

Tom wrote:
> I get the following Error Message, although Xcode 12 and the CLI Tools are installed:
> 
>>> Warning: The macOS 11.0 SDK does not appear to be installed. Ports may not build correctly.
>>> Warning: You can install it as part of the Xcode Command Line Tools package by running `xcode-select --install’.
> 
> What could be the Problem?

If the CLTs are installed then they must be outdated. If Software Update
won't update them, see
<https://trac.macports.org/wiki/ProblemHotlist#reinstall-clt>.

- Josh