[MacPorts] #66956: qbittorrent @4.5.1: build failure, undefined symbols

[MacPorts]

#66956: qbittorrent @4.5.1: build failure, undefined symbols
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  Reporter:  contextnerror  |      Owner:  i0ntempest
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.8.1
Resolution:                 |   Keywords:
      Port:  qBittorrent    |
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Comment (by i0ntempest):

 I'm already aware but couldn't figure it out. It's related to C++
 standards and the filesystem library. Need help from someone who knows
 C++.

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Ticket URL: <https://trac.macports.org/ticket/66956#comment:2>
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