[MacPorts] #61477: clang-9.0 fails to build on Big Sur macOS 11.0.1 Xcode 12.2

[MacPorts]

#61477: clang-9.0 fails to build on Big Sur macOS 11.0.1 Xcode 12.2
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  Reporter:  jhoyt4              |      Owner:  kencu
      Type:  defect              |     Status:  closed
  Priority:  Normal              |  Milestone:
 Component:  ports               |    Version:
Resolution:  fixed               |   Keywords:
      Port:  clang-9.0 clang-10  |
---------------------------------+--------------------

Comment (by jhoyt4):

 thanks for the help

 After syncing the ports tree (wow that took a while) I have managed to
 compile clang-9.0.

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Ticket URL: <https://trac.macports.org/ticket/61477#comment:39>
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