[MacPorts] #61497: Failed to build clang-9.0: command execution failed - Mac OS X big slur 11.0.1

[MacPorts]

#61497: Failed to build clang-9.0: command execution failed - Mac OS X big slur
11.0.1
------------------------+--------------------
  Reporter:  tiperiu    |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.4
Resolution:             |   Keywords:
      Port:  clang-9.0  |
------------------------+--------------------
Changes (by tiperiu):

 * Attachment "main.log" added.

 log file from installing clang-9.0 package

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Ticket URL: <https://trac.macports.org/ticket/61497>
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