[MacPorts] #70682: qt5-qttools @5.15.15 build failure

[MacPorts]

#70682: qt5-qttools @5.15.15 build failure
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  Reporter:  yoshikazu-tanaka-1961  |      Owner:  MarcusCalhoun-Lopez
      Type:  defect                 |     Status:  assigned
  Priority:  Normal                 |  Milestone:
 Component:  ports                  |    Version:  2.10.1
Resolution:                         |   Keywords:
      Port:  qt5-qttools            |
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Comment (by RobK88):

 I have the exact same problem and error on my Mac running High Sierra.  I
 hope it can easily be fixed.

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Ticket URL: <https://trac.macports.org/ticket/70682#comment:3>
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