[MacPorts] #52200: qt5 fails to build with Xcode 8 (due to removal of the deprecated xcrun executable)

[MacPorts]

#52200: qt5 fails to build with Xcode 8 (due to removal of the deprecated xcrun
executable)
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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 qt5-qtbase qt5-mysql-plugin  |
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Comment (by Julian.Byrne@…):

 Warning: xcrun is doing something funny. These give different results:

 {{{
 /usr/bin/xcrun -find xcrun # fails
 /usr/bin/xcrun -find zip # succeeds
 }}}

 despite the fact that both xcrun and zip are on the PATH in /usr/bin/ .
 Some configure scripts use "/usr/bin/xcrun -find xcrun".

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Ticket URL: <https://trac.macports.org/ticket/52200#comment:22>
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