[MacPorts] #45760: assimp: Add a noboost variant

[MacPorts]

#45760: assimp: Add a noboost variant
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  Reporter:  drew@…       |      Owner:  mmoll@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.2
Resolution:               |   Keywords:
      Port:  assimp       |
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Comment (by drew@…):

 > port install assimp -boost

 This worked perfectly for me. Is it version 3.1.1 that caused the issue
 with ''ompl'' or the noboost variant? Assimp 3.0.1270 is also able to be
 built without boost, but {{{ASSIMP_ENABLE_BOOST_WORKAROUND}}} needs to be
 set true explicitly.

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Ticket URL: <https://trac.macports.org/ticket/45760#comment:8>
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