[MacPorts] #36306: OpenSceneGraph opportunistically links with Coin and many others

[MacPorts]

#36306: OpenSceneGraph opportunistically links with Coin and many others
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  Reporter:  ryandesign@…                          |      Owner:  devans@…
      Type:  defect                                |     Status:  new
  Priority:  Normal                                |  Milestone:
 Component:  ports                                 |    Version:  2.1.2
Resolution:                                        |   Keywords:
      Port:  OpenSceneGraph, OpenSceneGraph-devel  |
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Comment (by devans@…):

 Fix for OpenSceneGraph committed in r106522

  * add common optional dependencies
  * patch to conditionally disable less common or broken options (including
 Coin/Inventor)
  * explicitly request Qt4 to avoid linking with Qt3

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Ticket URL: <https://trac.macports.org/ticket/36306#comment:3>
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