[MacPorts] #62586: gmic-2.9.6_0+x11.darwin_19.x86_64 fails to build on OS X 10.15.7

[MacPorts]

#62586: gmic-2.9.6_0+x11.darwin_19.x86_64 fails to build on OS X 10.15.7
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  Reporter:  MeNdMont  |      Owner:  Schamschula
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.4
Resolution:            |   Keywords:
      Port:  gmic      |
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Comment (by Schamschula):

 Indeed, opencv4 was upgraded, without fixing gmic.

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Ticket URL: <https://trac.macports.org/ticket/62586#comment:2>
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