[MacPorts] #61921: qt5-qtwebengine @5.15.2: does not build on macOS 10.13 with Xcode 9

[MacPorts]

#61921: qt5-qtwebengine @5.15.2: does not build on macOS 10.13 with Xcode 9
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  Reporter:  dliessi          |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  highsierra
      Port:  qt5-qtwebengine  |
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Changes (by dliessi):

 * Attachment "qt5-qtwebengine-clang9-main.log.bz2" added.


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Ticket URL: <https://trac.macports.org/ticket/61921>
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