[MacPorts] #53201: cmake: doesn't recognize macports-clang (No known features for CXX compiler)

[MacPorts]

#53201: cmake: doesn't recognize macports-clang (No known features for CXX
compiler)
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  Reporter:  RJVB    |      Owner:  michaelld
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  cmake   |
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Comment (by RJVB):

 Almost a year now that I run CMake with this patch (and quite heavily so),
 without any negative side-effects.

 The only side-effect of this kind of patch is that you can no longer use
 cmake-mp for testing stock cmake behaviour. Probably a moot issue in this
 case but easy to address. Just add a non-default `+stock` variant to ports
 that come with non-crucial patches adapting their behaviour to MacPorts
 "requirements" like "we should be able to use any compiler".

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Ticket URL: <https://trac.macports.org/ticket/53201#comment:15>
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