[MacPorts] #55139: RFE: Improve Compiler Management Code

[MacPorts]

#55139: RFE: Improve Compiler Management Code
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  Reporter:  MarcusCalhoun-Lopez  |      Owner:
      Type:  enhancement          |     Status:  new
  Priority:  Normal               |  Milestone:
 Component:  base                 |    Version:
Resolution:                       |   Keywords:
      Port:                       |
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Comment (by MarcusCalhoun-Lopez):

 I hope that the
 [https://trac.macports.org/changeset/e8c4772d46ceb8e3f2eac8888097d074da6d6bc2
 /macports-ports recent change] addresses some of the concerns
 expressed.[[BR]]
 As a very simple example, the following code should allow a port to select
 the GCC 7 compiler or just the GCC 7 Fortran part.
 {{{
 compiler.require_fortran yes

 variant mpich conflicts openmpi {}
 if {[variant_isset mpich]} {
     compiler.mpi mpich
 }

 variant openmpi conflicts mpich {}
 if {[variant_isset openmpi]} {
     compiler.mpi openmpi
 }

 variant gcc7 conflicts gfortran {}
 if {[variant_isset gcc7]} {
     compiler.whitelist macports-gcc-7 macports-mpich-gcc-7 macports-
 openmpi-gcc-7
 }

 variant gfortran conflicts gcc7 {}
 if {[variant_isset gfortran]} {
     compiler.fortran_fallback macports-gcc-7 macports-mpich-gcc-7
 macports-openmpi-gcc-7
 }
 }}}
 If anyone is interested in testing, I have attached a test Portfile for
 the reference implementation of [http://www.netlib.org/blas/ blas].

--
Ticket URL: <https://trac.macports.org/ticket/55139#comment:12>
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