[MacPorts] #57412: cxx11 1.1 portgroup: add dependency on cctools

[MacPorts]

#57412: cxx11 1.1 portgroup: add dependency on cctools
-------------------------+--------------------
  Reporter:  ryandesign  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:              |
-------------------------+--------------------

Comment (by kencu):

 is everyone OK if we just make port:cctools a clang runtime dep for every
 system? It would just be much simpler that way in the clang-3.9+
 portfiles, I can't see how it would cause any harm, and it will save us
 running into this issue again soon with 10.7 or 10.8, at the lack of some
 specificity.

-- 
Ticket URL: <https://trac.macports.org/ticket/57412#comment:4>
MacPorts <https://www.macports.org/>
Ports system for macOS