[MacPorts] #50854: scons incorrectly builds projects, serf1 unexpectedly changed dylib versions with just a revbump for OpenSSL

[MacPorts]

#50854: scons incorrectly builds projects, serf1 unexpectedly changed dylib
versions with just a revbump for OpenSSL
-----------------------+------------------------
  Reporter:  jeremyhu  |      Owner:  ryandesign
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.4
Resolution:            |   Keywords:
      Port:  scons     |
-----------------------+------------------------

Comment (by jeremyhu):

 Most well behaved libraries (IE: system libraries) set
 -compatibility_version to just 1.0 and continue to rev -current_version
 over time such that they have binary compatibility with all older clients.

 You should only bump the compatibility_version if you break ABI
 compatibility with older clients.

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Ticket URL: <https://trac.macports.org/ticket/50854#comment:9>
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