[MacPorts] #73167: libgcc15 can't find "md-unwind-def.h" (10.5.8)

[MacPorts]

#73167: libgcc15 can't find "md-unwind-def.h" (10.5.8)
-----------------------+-----------------------------
  Reporter:  nbuwe     |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.11.5
Resolution:            |   Keywords:  powerpc leopard
      Port:  libgcc15  |
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Comment (by geoffd2):

 Simple instructions to workaround this on PPC OSX 10.4 would be much
 appreciated!

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Ticket URL: <https://trac.macports.org/ticket/73167#comment:8>
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