[MacPorts] #59094: Error after updating XCode to 11.0

[MacPorts]

#59094: Error after updating XCode to 11.0
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  Reporter:  eisGeist  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.0
Resolution:            |   Keywords:
      Port:            |
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Comment (by kencu):

 You could also try symlinking the MacOSX.sdk to MacOSX10.14.sdk (which is
 a lie, but ...) and that would also most likely get you going, with
 unknown long-term consequences based on the SDK differences... I feel more
 comfortable with the actual MacOSX10.14.sdk being used, but it was easy
 for me to do that.

 Or of course, you can downgrade to Xcode 10 and revisit Xcode 11 later whe
 we get it sorted out. That is what I am actually doing myself, because I
 don't have a pressing need for anything in Xcode 11 that isn't already
 available in Xcode 10.

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Ticket URL: <https://trac.macports.org/ticket/59094#comment:8>
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