[MacPorts] #53102: jasper dylib current version regressed

[MacPorts]

#53102: jasper dylib current version regressed
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  Reporter:  jeremyhu  |      Owner:  jmroot
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  jasper    |
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Comment (by jmroot):

 More fallout from switching to cmake, which doesn't appear to let you set
 compatibility_version independently of the soname/major version. So
 libjasper.4.dylib built by cmake will always have current and compat
 versions of 4.x.y.

 https://cmake.org/cmake/help/v3.7/prop_tgt/SOVERSION.html

 I think we might just need to rev bump the dependents. :/

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Ticket URL: <https://trac.macports.org/ticket/53102#comment:1>
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