[MacPorts] #62462: opencv4 upgrade fails

[MacPorts]

#62462: opencv4 upgrade fails
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  Reporter:  dershow  |      Owner:  stromnov
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  opencv4  |
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Comment (by cjones051073):

 Note that the builds are also failing in the buildbots for mac OS 10.12
 and older

 https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/140821/steps
 /install-port/logs/stdio

 Maybe for different reasons

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Ticket URL: <https://trac.macports.org/ticket/62462#comment:5>
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