[MacPorts] #69000: libcxx-powerpc: can we get rid of depending on system libstdc++ completely?

[MacPorts]

#69000: libcxx-powerpc: can we get rid of depending on system libstdc++ completely?
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  Reporter:  barracuda156    |      Owner:  catap
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.8.1
Resolution:                  |   Keywords:  leopard, snowleopard, powerpc
      Port:  libcxx-powerpc  |
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Comment (by barracuda156):

 Perhaps not so bad, and linking to `-libgcc_s.1` may do:
 https://gcc.gnu.org/legacy-ml/gcc-help/2020-01/msg00030.html
 Which should not create any havoc.

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Ticket URL: <https://trac.macports.org/ticket/69000#comment:2>
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