[MacPorts] #64371: libsass @3.6.2 does not build on PPC Leopard, Mac OS X 10.5.8, because cc1plus: error: unrecognized command line option "-std=c++11"

[MacPorts]

#64371: libsass @3.6.2 does not build on PPC Leopard, Mac OS X 10.5.8, because
cc1plus: error: unrecognized command line option "-std=c++11"
------------------------+---------------------
  Reporter:  ballapete  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.7.1
Resolution:             |   Keywords:  leopard
      Port:  libsass    |
------------------------+---------------------

Comment (by ballapete):

 It built with `configure.compiler=macports-gcc-7`.

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Ticket URL: <https://trac.macports.org/ticket/64371#comment:1>
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