[MacPorts] #49860: mpv @0.11.0: You manually enabled the feature 'cocoa', but the autodetection check failed.

[MacPorts]

#49860: mpv @0.11.0: You manually enabled the feature 'cocoa', but the
autodetection check failed.
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  Reporter:  csae2608@…  |      Owner:  ionic@…
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:
      Port:  mpv         |
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Comment (by havner@…):

 Replying to [comment:3 ryandesign@…]:
 > Has duplicate #51665.

 Not sure this is a duplicate of #51665. The latter appeared for me on El
 Capitan. It used to work fine on Yosemite. It's not like I had this bug
 since 9 months. Looks the same but the underlying reason might be
 different.

 Anyway, any means to debug and fix that? I tried to check the configure
 process but I'm not very efficient with python and waf. I found the
 check_cocoa() function but I wouldn't know how to resolve that to a cmd
 line compile result to check what the actual clang error is.

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Ticket URL: <https://trac.macports.org/ticket/49860#comment:4>
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