[MacPorts] #67777: PDAL: possible to switch to using our Eigen3?

[MacPorts]

#67777: PDAL: possible to switch to using our Eigen3?
--------------------------+----------------------
 Reporter:  barracuda156  |      Owner:  Veence
     Type:  defect        |     Status:  assigned
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:  powerpc       |       Port:  PDAL
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 Bundled Eigen is broken for PPC: it suffers from a bug which has been
 fixed with upstream Eigen, and our eigen3-devel works fine. So at least it
 will possible to install eigen3-devel and then build the port.

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Ticket URL: <https://trac.macports.org/ticket/67777>
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