[MacPorts] #54281: cmake - 3.8.2 update fails to build on OS 10.12

[MacPorts]

#54281: cmake - 3.8.2 update fails to build on OS 10.12
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  Reporter:  cjones051073  |      Owner:
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  cmake         |
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Comment (by dyne2meter):

 Similar issue with 10.9, only the "distribution not found" sphinx-contrib.
 Log attached

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Ticket URL: <https://trac.macports.org/ticket/54281#comment:2>
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