[MacPorts] #65314: doxygen-devel @1.9.4: build fails for 10.7 through 10.12: undefined vtable symbols

[MacPorts]

#65314: doxygen-devel @1.9.4: build fails for 10.7 through 10.12: undefined vtable
symbols
----------------------------+-----------------------
  Reporter:  ryandesign     |      Owner:  michaelld
      Type:  defect         |     Status:  reopened
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.7.2
Resolution:                 |   Keywords:
      Port:  doxygen-devel  |
----------------------------+-----------------------

Comment (by michaelld):

 Ug ... none of those sound like great options. How do we do this on OSX
 10.6 (and presumedly 10.4 and 10.5) so that it (those) get the newer
 libc++? Could we not somehow replicate that for 10.[7 - 12]? Maybe you've
 already described this in one of your prior messages & I just didn't get
 it ... ?

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Ticket URL: <https://trac.macports.org/ticket/65314#comment:27>
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