[MacPorts] #67099: openssl3 @3.1.0 fails to build on 10.10 through 10.13

[MacPorts]

#67099: openssl3 @3.1.0 fails to build on 10.10 through 10.13
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  Reporter:  dyne2meter  |      Owner:  neverpanic
      Type:  defect      |     Status:  accepted
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.8.1
Resolution:              |   Keywords:
      Port:  openssl3    |
-------------------------+------------------------

Comment (by LLatULiege):

 Same issue, errors.

 Trying "install openssl3 +legacy" fails.

 Note that the main.log generated in my configuration includes
 ":debug:configure MACPORTS_LEGACY_SUPPORT_DISABLED='1'" at line #105,
 while I chose "openssl3 +legacy" for my install.

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Ticket URL: <https://trac.macports.org/ticket/67099#comment:10>
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