[MacPorts] #55165: harfbuzz 1.6.1 : cc1plus: error: unrecognized command line option "-std=c++11"

[MacPorts]

#55165: harfbuzz 1.6.1 : cc1plus: error: unrecognized command line option
"-std=c++11"
-----------------------+------------------------
  Reporter:  kencu     |      Owner:  ryandesign
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  haspatch
      Port:  harfbuzz  |
-----------------------+------------------------

Comment (by ryandesign):

 Grumble. I had looked in the NEWS file and there was no mention of a new
 C++11 requirement in 1.6.x.

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Ticket URL: <https://trac.macports.org/ticket/55165#comment:4>
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