[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):

 This commit:

 https://github.com/openssl/openssl/commit/b58ac9f1e3f828b5c65c9edd5bb86603a4886a26
 #diff-dba8c3f61f549f95824cacc4d356df3e33e7c6db5038f8a6e5c0d2e2ad46a45a

 But how exactly did it work before? More to discover...

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Ticket URL: <https://trac.macports.org/ticket/63404#comment:5>
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