[MacPorts] #70750: MacOS Sequoia: C++ headers are not found with CLTs installed

[MacPorts]

#70750: MacOS Sequoia: C++ headers are not found with CLTs installed
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  Reporter:  SaintBol  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  sequoia
      Port:            |
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Comment (by jmroot):

 Replying to [comment:44 wdormann]:
 > Not a lot there, but presumably its mere presence (without the relevant
 includes that some things are looking for) is enough to confuse the build
 process for some packages.

 Its existence seems to actually make the compiler look there for C++
 headers instead of the correct place inside the SDK.

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Ticket URL: <https://trac.macports.org/ticket/70750#comment:45>
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