[MacPorts] #62779: perl5.* fails to build on macOS 11.3 / Xcode 12.5, can be resolved for perl5.32.1

[MacPorts]

#62779: perl5.* fails to build on macOS 11.3 / Xcode 12.5, can be resolved for
perl5.32.1
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  Reporter:  ghosthound  |      Owner:  mojca
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  perl5       |
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Comment (by ghosthound):

 I think I have a better solution - I've back ported the fix in perl 5.32.1
 to 5.30 and 5.28.  See new attached patches.

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Ticket URL: <https://trac.macports.org/ticket/62779#comment:4>
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