[MacPorts] #57522: castxml: Undefined symbols

[MacPorts]

#57522: castxml: Undefined symbols
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  Reporter:  ryandesign  |      Owner:  stromnov
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  castxml     |
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Comment (by ryandesign):

 I think this type of error suggests a C++ standard library mismatch. So
 now that we've switched 10.6-10.8 to libc++ by default, I guess the
 problem no longer affects 10.6-10.8, but it might still affect < 10.5; I
 haven't tested.

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Ticket URL: <https://trac.macports.org/ticket/57522#comment:3>
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