[MacPorts] #54798: webkit2-gtk +quartz build fails with many compiler errors

[MacPorts]

#54798: webkit2-gtk +quartz build fails with many compiler errors
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  Reporter:  Polyergic    |      Owner:  jeremyhu
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  webkit2-gtk  |
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Comment (by kencu):

 retesting Sierra, adding -std=c++14 works to fix it for me. It's also
 reported to work on High Sierra, I'll go ahead and add that to the
 Portfile. Not sure how to explain why it didn't work for the OP.

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Ticket URL: <https://trac.macports.org/ticket/54798#comment:11>
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