[MacPorts] #55641: zmq @4.2.3 fails to build on 10.7 and 10.8 due to C++11

[MacPorts]

#55641: zmq @4.2.3 fails to build on 10.7 and 10.8 due to C++11
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  Reporter:  ryandesign      |      Owner:  merijn
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.4.2
Resolution:                  |   Keywords:  lion, mountainlion
      Port:  zmq, zmq-devel  |
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Comment (by michaelld):

 nice work there, Ken! I'll give these a go & see what happens. I know from
 reviewing my 10.8 install that I just added the cxx11 1.1 PG & that did
 the trick. That said, if we can find a way to make it work better I'm all
 for it!

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Ticket URL: <https://trac.macports.org/ticket/55641#comment:11>
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