[MacPorts] #65377: Volk 2.5.1 Broken on <= 10.14, needs std::filesystem

[MacPorts]

#65377: Volk 2.5.1 Broken on <= 10.14, needs std::filesystem
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  Reporter:  michaelld  |      Owner:  michaelld
      Type:  defect     |     Status:  reopened
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  volk       |
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Comment (by michaelld):

 test PR here: https://github.com/macports/macports-ports/pull/15205

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Ticket URL: <https://trac.macports.org/ticket/65377#comment:9>
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