[MacPorts] #60193: opencv should not be dependent on Java12

[MacPorts]

#60193: opencv should not be dependent on Java12
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  Reporter:  WolfgangFahl  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  opencv        |
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Comment (by WolfgangFahl):

 I am talking about that variant I'd love to get a +java variant that does
 not depend on Java 12. E.g. either fix +java or create a +java8 so that
 Java 8 can still be used. I need to upgrade openCV 3.4.3 in an Java8
 environment.

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Ticket URL: <https://trac.macports.org/ticket/60193#comment:3>
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