[MacPorts] #39428: mpich should have variant +gcc47 by default

[MacPorts]

#39428: mpich should have variant +gcc47 by default
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  Reporter:  dstrubbe@…   |      Owner:  macports-tickets@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.1.3
Resolution:               |   Keywords:  haspatch
      Port:  mpich        |
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Comment (by eborisch@…):

 Making mpich +gcc47 by default introduces a large number of dependencies
 (to build gcc47) that aren't required if someone doesn't need Fortran. I'm
 hesitant to add this as a default variant; it seems it would be better
 suited to use active_variants in arpack and netcdf-fortran.

 Other thoughts?

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Ticket URL: <https://trac.macports.org/ticket/39428#comment:1>
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