[MacPorts] #46527: ld64 @97.17_4: error: Availability.h: No such file or directory

[MacPorts]

#46527: ld64 @97.17_4: error: Availability.h: No such file or directory
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  Reporter:  ryandesign@…       |      Owner:  jeremyhu@…
      Type:  defect             |     Status:  new
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.3.3
Resolution:                     |   Keywords:
      Port:  libunwind-headers  |
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Comment (by jeremyhu@…):

 Yeah, that's just a reminder for me to send my changes upstream at that
 location when I make them, so others outside of MacPorts can benefit.

 Yes.  It should be fairly easy.

 We just want to change from using Availability.h to AvailabilityMacros.h
 on Tiger.

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Ticket URL: <https://trac.macports.org/ticket/46527#comment:3>
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