[MacPorts] #53348: OpenBLAS*: redo compiler variants

[MacPorts]

#53348: OpenBLAS*: redo compiler variants
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  Reporter:  michaelld                 |      Owner:  NicosPavlov
      Type:  enhancement               |     Status:  new
  Priority:  Normal                    |  Milestone:
 Component:  ports                     |    Version:
Resolution:                            |   Keywords:
      Port:  OpenBlas, OpenBlas-devel  |
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Comment (by michaelld):

 I have no direct experience using the compilers portgroup; my experiences
 thus far are mostly through py*numpy, and someone else set the PG usage up
 so I didn't have to. If someone else wants to do the same here I'm all for
 it.

 In my current changes, +clang +gcc# would mean "use Clang for C/C++ and
 gFortran# for Fortran", while -clang +gcc# would mean "use GCC# for the
 compiler suite".

 I could move to using +clang +gfortran#, where the latter requires the
 former and conflicts to +gcc# ... but that seems like a lot of work for
 IMHO minimal less confusion. OTOH, at least each variant would be explicit
 and differentiated from all other variants, so maybe not as confusing? ...
 hmmmm ... this might be worth thinking about more.

 Let's get more feedback from other MP devs, if at all possible.

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Ticket URL: <https://trac.macports.org/ticket/53348#comment:6>
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