[MacPorts] #57751: qt4-mac: lots of errors trying to build with clang-7.0 (presumably related to defaulting to c++17 mode)

[MacPorts]

#57751: qt4-mac: lots of errors trying to build with clang-7.0 (presumably related
to defaulting to c++17 mode)
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  Reporter:  kencu    |      Owner:  michaelld
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  qt4-mac  |
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Comment (by kencu):

 I also pondered whether forcing the older standard might be easier that
 updating the code to the new standard ... good plan, I think, for the
 forseeable future anyway...until/unless we run into a c++11 required dep,I
 suppose...

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Ticket URL: <https://trac.macports.org/ticket/57751#comment:17>
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