[MacPorts] #66956: qbittorrent @4.5.1: build failure, undefined symbols for std::filesystem on 10.14

[MacPorts]

#66956: qbittorrent @4.5.1: build failure, undefined symbols for std::filesystem on
10.14
----------------------------+------------------------
  Reporter:  contextnerror  |      Owner:  i0ntempest
      Type:  defect         |     Status:  closed
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.8.1
Resolution:  fixed          |   Keywords:  mojave
      Port:  qBittorrent    |
----------------------------+------------------------

Comment (by contextnerror):

 It does look like you're right, based on comment:51:ticket:62441. I've
 voted up your question on github, but I won't be holding my breath for an
 answer.

 I do appreciate all the time you've put in trying to get this to work,
 though.

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Ticket URL: <https://trac.macports.org/ticket/66956#comment:23>
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