[MacPorts] #55382: cmake @3.10.0: Cannot find a C++ compiler supporting C++11 on this system

[MacPorts]

#55382: cmake @3.10.0: Cannot find a C++ compiler supporting C++11 on this system
-------------------------+-------------------------------------------------
  Reporter:  ryandesign  |      Owner:  michaelld
      Type:  defect      |     Status:  closed
  Priority:  High        |  Milestone:
 Component:  ports       |    Version:
Resolution:  fixed       |   Keywords:  tiger leopard snowleopard lion
      Port:  cmake       |  mountainlion
-------------------------+-------------------------------------------------

Comment (by thetrial):

 The fix managed that macports now works with OSX 10.7.5, thanks a lot.

 Now I have clang-3.4, 3.7, 3.8, 3.9, 4.0 and 5.0 and the corresponding
 llvm-3.4…5.0 on my system. So what is necessary and what could be
 uninstalled? Would it be right to set 5.0 requested and let the rest go?

 What makes me wonder a bit:


 {{{
 The following ports are dependent on llvm-3.4:
   cctools
     libgcc
   clang-3.4
   ld64-latest
     ld64
       clang-3.7
       clang-3.8
       clang-3.9
       clang-4.0
       clang-5.0
 }}}

 So what is the right way to go now?

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Ticket URL: <https://trac.macports.org/ticket/55382#comment:59>
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