[MacPorts] #58801: mysql57 at 5.7.27 does not build under OS X 10.11.6

[MacPorts]

#58801: mysql57 at 5.7.27 does not build under OS X 10.11.6
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  Reporter:  josephsacco  |      Owner:  chrstphrchvz
      Type:  defect       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:  fixed        |   Keywords:
      Port:  mysql57      |
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Comment (by cjones051073):

 > MySQL regularly drops support for running any version of MySQL on older
 macOS versions (see https://www.mysql.com/support/eol-notice.html);
 currently, 10.12 and lower unsupported. Should the mysql ports indicate
 this?

 Not sure. MacPorts is regularly able to build ports on platforms upstream
 does not directly support, through the use of the various mechanisms we
 have such as our own (newer) compilers and the legacysupport PG. I am not
 sure we need to mention in each and every port when we are doing this.

 That said, maybe in cases like this, where there is a direct comment from
 upstream on what is supported (often there isn't) we could conditionally
 add the obsolete PG for the Darwin versions that have been dropped.

 b.t.w. legacysupport PG has indeed worked here, e.g. for 10.9

 https://build.macports.org/builders/ports-10.9_x86_64-builder/builds/94023/steps
 /install-port/logs/stdio

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Ticket URL: <https://trac.macports.org/ticket/58801#comment:5>
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