[MacPorts] #66953: cmake @3.24.3: Does not compile with SDK 10.12

[MacPorts]

#66953: cmake @3.24.3: Does not compile with SDK 10.12
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  Reporter:  lukaso  |      Owner:  michaelld
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.8.1
Resolution:          |   Keywords:
      Port:  cmake   |
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Comment (by lukaso):

 I believe this is the cause of the problem, which has now hit cmake:
 https://stackoverflow.com/questions/44217316/how-do-i-use-stdoptional-in-c

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Ticket URL: <https://trac.macports.org/ticket/66953#comment:3>
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