[MacPorts] #70750: C++ headers are not found after updating to CLTs version 16.0

[MacPorts]

#70750: C++ headers are not found after updating to CLTs version 16.0
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  Reporter:  SaintBol  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  sequoia sonoma
      Port:            |
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Comment (by dagui0):

 Finally I succeded to build c++ ports.

 1. Uninstall Xcode
 It was upgraded from 15 to 16. There was Developer folder under
 /Applications/XCode.app/. It seems to make confused to macports. So I
 decided to uninstall and clean install.

 2. Uninstall Command Line Tools
 'xcode-select --install' still installs 15.x command line tools. So I had
 to remove it.
 sudo rm -rf /Library/Developer/CommandLineTools

 3. Re install Command Line Tools
 Download for Coomand Line Tools for Xcode 16 and Install it.
 https://developer.apple.com/download/all/?q=for%20Xcode

 4. Build ports
 Even I do not install Xcode, building port is possible.
 sudo port install cmake

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Ticket URL: <https://trac.macports.org/ticket/70750#comment:85>
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