[MacPorts] #61646: arpack 3.7.0 fails upon update with Intel Big Sur 11.0.1

[MacPorts]

#61646: arpack 3.7.0 fails upon update with Intel Big Sur 11.0.1
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 Reporter:  rth238                |      Owner:  (none)
     Type:  defect                |     Status:  new
 Priority:  Normal                |  Milestone:
Component:  ports                 |    Version:  2.6.4
 Keywords:  Big Sur, gfortran 10  |       Port:  arpack-3.7.0_0
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 arpack, needed for octave, fails to build after installation of Big Sur
 11.0.1
 config.log file points to issue with fortran (gcc10) that otherwise
 appears to be properly configured

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Ticket URL: <https://trac.macports.org/ticket/61646>
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