[MacPorts] #46506: Update: eigen3 3.2.3

[MacPorts]

#46506: Update: eigen3 3.2.3
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  Reporter:  mschamschula@…  |      Owner:  eborisch@…
      Type:  update          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.3.3
Resolution:                  |   Keywords:  haspatch
      Port:  eigen3          |
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Comment (by mschamschula@…):

 As cmake had failed trace mode, I had assumed that cmake was a missing
 build dependency. Changed depends_build to depends_build-append for
 port:pkgconfig.

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Ticket URL: <https://trac.macports.org/ticket/46506#comment:2>
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