[MacPorts] #55639: QtCore unusable with Apple LLVM version 9.0.0

[MacPorts]

#55639: QtCore unusable with Apple LLVM version 9.0.0
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  Reporter:  janstary  |      Owner:
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.4.99
Resolution:            |   Keywords:
      Port:  bitcoin   |
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Changes (by janstary):

 * Attachment "main.log" added.

 the log log of the failed build

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Ticket URL: <https://trac.macports.org/ticket/55639>
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