[MacPorts] #55165: harfbuzz @1.6.3: cc1plus: error: unrecognized command line option "-std=c++11"

[MacPorts]

#55165: harfbuzz @1.6.3: 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):

 harfbuzz-icu is a subport of harfbuzz, so the above commit handles it too.

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Ticket URL: <https://trac.macports.org/ticket/55165#comment:9>
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