[MacPorts] #52442: opencsg @1.4.0 does not honor -stdlib=libc++ and patch to fix

[MacPorts]

#52442: opencsg @1.4.0 does not honor -stdlib=libc++ and patch to fix
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  Reporter:  ken.cunningham.webuse@…  |      Owner:  dstrubbe@…
      Type:  defect                   |     Status:  new
  Priority:  Normal                   |  Milestone:
 Component:  ports                    |    Version:  2.3.4
Resolution:                           |   Keywords:
      Port:  opencsg                  |
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Comment (by ken.cunningham.webuse@…):

 Wasn't 100% sure of the c++11 part for opencsg, but openscad uses c++11 so
 I I added it here too. It works, but maybe isn't needed. I didn't deeply
 dig into that part of it.

 After configuring, I couldn't find the optflag in the Makefile.... and I
 know the cmake portgroup ignores them, so I thought the qmake portgroup
 might as well.
 {{{
 configure.optflags  -O3
 }}}

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Ticket URL: <https://trac.macports.org/ticket/52442#comment:4>
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