[MacPorts] #69586: R build fails

[MacPorts]

#69586: R build fails
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  Reporter:  ShadSterling  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.9.1
Resolution:                |   Keywords:
      Port:  R             |
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Comment (by ShadSterling):

 Why is a build with the `gcc12` variant referring to a library provided by
 `libgcc13` rather than `libgcc12`?

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Ticket URL: <https://trac.macports.org/ticket/69586#comment:7>
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