[MacPorts] #61647: mpv build fails on Mojave

[MacPorts]

#61647: mpv build fails on Mojave
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  Reporter:  ShadSterling  |      Owner:  Ionic
      Type:  defect        |     Status:  reopened
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.4
Resolution:                |   Keywords:
      Port:  mpv           |
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Comment (by friguron):

 I have been stuck on mpv 0.3.2 for months... My Mojave 10.14.6 and Xcode
 11.1 (living under /Applications/Xcode_11_1.app directory) are uncapable
 of building mpv 0.3.3
 I've used the symbolic link trick but no luck.
 Any other hint which doesn't involve installing Xcode 10.3 ?

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Ticket URL: <https://trac.macports.org/ticket/61647#comment:13>
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