[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):

 If I'm going to do a patch anyway, then I'll just do it to Volk straight
 up to re-allow dynamic picking of `std::filesystem` and
 `boost::filesystem`. I'm going to track down the commit we put in place &
 just create a reverse patch ... just for MacPorts needs. That way we can
 keep everything in 1 place & not change dependencies. And, Volk can remain
 as-is; no need to fix it up!

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Ticket URL: <https://trac.macports.org/ticket/65377#comment:13>
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