[MacPorts] #63120: boost176 needs a compiler that supports C++11

[MacPorts]

#63120: boost176 needs a compiler that supports C++11
-----------------------+----------------------
 Reporter:  ballapete  |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.7.1
 Keywords:  tiger      |       Port:  boost176
-----------------------+----------------------
 From configure: `A C++11 capable compiler is required for building the B2
 engine.`

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Ticket URL: <https://trac.macports.org/ticket/63120>
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