[MacPorts] #53105: qt5-qtbase @5.6.2: configure fails due to invalid compiler *clang*

[MacPorts]

#53105: qt5-qtbase @5.6.2: configure fails due to invalid compiler *clang*
-------------------------+-----------------
  Reporter:  mndavidoff  |      Owner:
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  qt5-qtbase  |
-------------------------+-----------------

Comment (by BSeppke):

 This error occurs for me (MacPorts 2.3.5, Mac OS X Sierra 10.12.2, XCode
 8.2 (8C38)) for opencv, too.
 Seems, that any port with that *clang* setting cannot be build, since that
 compiler cannot be found.

 Since this is more a system than a port dependent issue it should be fixed
 rather soon and gain high priority.

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Ticket URL: <https://trac.macports.org/ticket/53105#comment:1>
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