[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
 Keywords:  leopard    |       Port:  libsass
-----------------------+---------------------
 Obviously this port needs a modern compiler, for example `GCC7`.

 (Gtk3 was looking for `sassc`.)

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