[MacPorts] #60944: qt5: Support arm64

[MacPorts]

#60944: qt5: Support arm64
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  Reporter:  ryandesign   |      Owner:  MarcusCalhoun-Lopez
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  qt5          |
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Comment (by michaelld):

 With assimp's .pc file fixed, it looks like for basic ARM64 support
 there's just a slight tweak to qt5-qtbase required under 5.15.1. I don't
 know who well Qt5 works, but it builds and all of the binaries register as
 ARM64 ... so, that's progress!

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Ticket URL: <https://trac.macports.org/ticket/60944#comment:3>
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