[MacPorts] #66246: Help needed: something forces -stdlib= flag which breaks build with GCC

[MacPorts]

#66246: Help needed: something forces -stdlib= flag which breaks build with GCC
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  Reporter:  barracuda156  |      Owner:  kencu
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.8.0
Resolution:                |   Keywords:
      Port:                |
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Comment (by kencu):

 you mentioned you are using the compilers PG, so probably from this recent
 commit then:

 https://github.com/macports/macports-
 ports/commit/6c7e20407ccc5f48c8a89b6cfef7561fea0002b0

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Ticket URL: <https://trac.macports.org/ticket/66246#comment:2>
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