[MacPorts] #67742: PothosFlow: builds fail across-the-board: undefined symbols related to libcxx: allocator<>, basic_string<>, etc

[MacPorts]

#67742: PothosFlow: builds fail across-the-board: undefined symbols related to
libcxx: allocator<>, basic_string<>, etc
-------------------------+--------------------------
  Reporter:  mascguy     |      Owner:  barracuda156
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.8.1
Resolution:              |   Keywords:
      Port:  PothosFlow  |
-------------------------+--------------------------
Changes (by mascguy):

 * cc: barracuda156 (removed)
 * cc: ra1nb0w (added)
 * owner:  ra1nb0w => barracuda156


Comment:

 Sergey, can you kindly submit a PR ASAP, with the build fix?

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Ticket URL: <https://trac.macports.org/ticket/67742#comment:3>
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