[MacPorts] #66697: doxygen-devel @1.9.6 does not build on macOS High Sierra, Version 10.13.6, because of 'call to unavailable function 'get': introduced in macOS 10.14'?

[MacPorts]

#66697: doxygen-devel @1.9.6 does not build on macOS High Sierra, Version 10.13.6,
because of 'call to unavailable function 'get': introduced in macOS 10.14'?
----------------------------+------------------------
  Reporter:  ballapete      |      Owner:  (none)
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.8.0
Resolution:                 |   Keywords:  highsierra
      Port:  doxygen-devel  |
----------------------------+------------------------
Changes (by ballapete):

 * Attachment "main.log" added.

 Main.log from High Sierra 10.13.6

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Ticket URL: <https://trac.macports.org/ticket/66697>
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