[MacPorts] #66639: ruby31 3.1.3: fails to build on OS X 10.8 and 10.9

[MacPorts]

#66639: ruby31 3.1.3: fails to build on OS X 10.8 and 10.9
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  Reporter:  erikbs  |      Owner:  (none)
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  mountainlion, mavericks
      Port:  ruby31  |
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Changes (by erikbs):

 * Attachment "outside_macports.log" added.

 Log from build outside Macports

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Ticket URL: <https://trac.macports.org/ticket/66639>
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