[MacPorts] #55774: Qt5.10 compilation failed

[MacPorts]

#55774: Qt5.10 compilation failed
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  Reporter:  cgilles     |      Owner:
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  qt5-qtbase  |
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Comment (by cgilles):

 MacOS : 10.12.6
 computer : MacBook Pro mi-2012
 XCode :  9.1 (9B55)

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Ticket URL: <https://trac.macports.org/ticket/55774#comment:1>
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