[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
-----------------------------+--------------------------------
  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  |
-----------------------------+--------------------------------

Comment (by michaelld):

 It's pretty simple to patch configure.ac to add an option "--enable-cxx11"
 which is disabled by default, then to force C++11 checking in the compiler
 if this option is enabled. If found use it; if not, error out. I'll attach
 a tarball with these patches & Portfile update.

--
Ticket URL: <https://trac.macports.org/ticket/55641#comment:14>
MacPorts <https://www.macports.org/>
Ports system for macOS