[MacPorts] #59822: cmake @3.16.0_0: failing to build on Mountain Lion

[MacPorts]

#59822: cmake @3.16.0_0: failing to build on Mountain Lion
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  Reporter:  letaage  |      Owner:  michaelld
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.6.2
Resolution:           |   Keywords:  mountainlion
      Port:  cmake    |
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Comment (by jmroot):

 Looks like the same error as #59782. Seems to have built OK on the
 buildbot:
 https://build.macports.org/builders/ports-10.8_x86_64-builder/builds/9528

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Ticket URL: <https://trac.macports.org/ticket/59822#comment:2>
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