[MacPorts] #68534: doxygen @1.9.8: fatal error: 'fmt/core.h' file not found

[MacPorts]

#68534: doxygen @1.9.8: fatal error: 'fmt/core.h' file not found
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  Reporter:  kwolcott  |      Owner:  mascguy
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.8.1
Resolution:            |   Keywords:
      Port:  doxygen   |
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Comment (by barracuda156):

 Another `doxygen` 1.9.8 and `spdlog` issue is #68581

 Thanks Ryan for pointing to this.

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Ticket URL: <https://trac.macports.org/ticket/68534#comment:4>
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