[MacPorts] #55154: qt57-qtbase: error: use of class template 'optional' requires template arguments (was: Update error on qca-qt5 under OS X 10.8.5)

[MacPorts]

#55154: qt57-qtbase: error: use of class template 'optional' requires template
arguments
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  Reporter:  SchmollTroll  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.4.2
Resolution:                |   Keywords:  mountainlion
      Port:  qt5-qtbase    |
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Ticket URL: <https://trac.macports.org/ticket/55154#comment:2>
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