[MacPorts] #63404: openssl @1.1.1l fails to build on older OS versions

[MacPorts]

#63404: openssl @1.1.1l fails to build on older OS versions
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  Reporter:  tehcog   |      Owner:  ci42
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.7.1
Resolution:           |   Keywords:
      Port:  openssl  |
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Comment (by kencu):

 upstream bug report:

 https://github.com/openssl/openssl/issues/16407

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Ticket URL: <https://trac.macports.org/ticket/63404#comment:6>
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