[MacPorts] #39605: clang-3.3: upgrade failure on 10.6 - Availability.h not found

[MacPorts]

#39605: clang-3.3: upgrade failure on 10.6 - Availability.h not found
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  Reporter:  david.w.watson@…  |      Owner:  mfeiri@…
      Type:  defect            |     Status:  new
  Priority:  Normal            |  Milestone:
 Component:  ports             |    Version:  2.1.3
Resolution:                    |   Keywords:
      Port:  clang-3.3         |
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Comment (by jeremyhu@…):

 Replying to [comment:25 beany_kelly@…]:
 > Mine compiled fine also! Tried to post that a few hours ago, but the
 system wasn't responding.
 >
 > Presumably those header ports *were* needed once upon a time, or they
 wouldn't have appeared in our installed ports list.

 I think I recall seeing some port pulling them in when I did an upgrade
 months ago.  When I noticed that, I fixed that port to not depend on them.
 It's likely that people's systems got polluted with those ports...

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Ticket URL: <https://trac.macports.org/ticket/39605#comment:26>
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