[MacPorts] #38142: giza @0.7.6 - new port file

[MacPorts]

#38142: giza @0.7.6 - new port file
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  Reporter:  daniel.price@…  |      Owner:  macports-tickets@…
      Type:  submission      |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.1.3
Resolution:                  |   Keywords:  maintainer
      Port:  giza            |
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Comment (by daniel.price@…):

 I've updated the Portfile to use the compilers portgroup. Also fixed the
 build problem with -lgfortran.

 One thing is that the compilers portgroup stuff does not seem to update
 ${configure.cc} and ${configure.fc} for use in the Portfile, so I have had
 to do this manually using a loop in the style of the old Fortran recipe.
 Also, no Fortran compiler is turned on by default, so I've had to add a
 few lines to make sure that at least one of the Fortran variants is chosen
 (+gcc48 by default). Let me know if you think this can be done more
 elegantly.

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Ticket URL: <https://trac.macports.org/ticket/38142#comment:8>
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