[MacPorts] #58540: xorg-libxcb @1.13.1 does not build on High Sierra (macOS 10.13.6) because building documentation never finds an end

[MacPorts]

#58540: xorg-libxcb @1.13.1 does not build on High Sierra (macOS 10.13.6) because
building documentation never finds an end
--------------------------+------------------------
  Reporter:  ballapete    |      Owner:  jeremyhu
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.4
Resolution:               |   Keywords:  highsierra
      Port:  xorg-libxcb  |
--------------------------+------------------------

Comment (by ballapete):

 Build succeeds as well when the `configure` option `--without-doxygen` is
 given. So the failure is related to `doxygen`'s use.

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Ticket URL: <https://trac.macports.org/ticket/58540#comment:7>
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