[MacPorts] #52200: Xcode 8 deprecation of xcrun breaks qt5 build

[MacPorts]

#52200: Xcode 8 deprecation of xcrun breaks qt5 build
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  Reporter:  howarth.at.macports@…  |      Owner:  mcalhoun@…
      Type:  defect                 |     Status:  new
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.3.4
Resolution:                         |   Keywords:  sierra
      Port:  qt5                    |
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Comment (by howarth.at.macports@…):

 On fink, our qt5-base packaging assumes it does as we have both
 BuildDepends on...

         xcode (>= 5.1.1),
         xcode.app (>= 5.1.1),

 to insure both the CLI and Xcode.app are installed.

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Ticket URL: <https://trac.macports.org/ticket/52200#comment:7>
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