[MacPorts] #69016: Add Flang as fortran compiler for mpich-clang

[MacPorts]

#69016: Add Flang as fortran compiler for mpich-clang
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 Reporter:  rfj82982                    |      Owner:  (none)
     Type:  defect                      |     Status:  new
 Priority:  Normal                      |  Milestone:
Component:  ports                       |    Version:  2.8.1
 Keywords:  mpich-clang, openmpi-clang  |       Port:  mpich-clang-17
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 I am trying to have flang, which is now part of macport, as fortran
 compiler for mpich instead of gcc. I try few configure options as
 described in this page https://trac.macports.org/wiki/CompilerSelection,
 however I always end up to have gcc as fortran compiler. What is the full
 syntax to force flang instead of gcc? Is this option available.
 Would be good if among the fortran option for variants flang would be
 available and would make more sense to have flang as fortran compiler
 instead of gcc.
 Same issue seems also to be affecting the openmpi-clang port

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Ticket URL: <https://trac.macports.org/ticket/69016>
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