[MacPorts] #55867: lyx 2.2.3 +qt5 fails to be configured

[MacPorts]

#55867: lyx 2.2.3 +qt5 fails to be configured
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  Reporter:  yaoyuki  |      Owner:
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.4.2
Resolution:           |   Keywords:
      Port:  LyX      |
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Comment (by kencu):

 might just need the standard set to c++11

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Ticket URL: <https://trac.macports.org/ticket/55867#comment:1>
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