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

[MacPorts]

#55139: RFE: Improve Compiler Management Code
---------------------------------+-----------------
 Reporter:  MarcusCalhoun-Lopez  |      Owner:
     Type:  enhancement          |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  base                 |    Version:
 Keywords:                       |       Port:
---------------------------------+-----------------
 I would like to make the following improvements to the MacPorts code:
 * Eliminate the cxx11 PorGroups ([https://github.com/macports/macports-
 ports/blob/master/_resources/port1.0/group/cxx11-1.0.tcl 1.0] and
 [https://github.com/macports/macports-
 ports/blob/master/_resources/port1.0/group/cxx11-1.1.tcl 1.1]).
 * Prevent the creation of a c11 PortGroup.
   * {{{grep -r "support C11" --include=Portfile * | cut -d "/" -f2 | wc
 -l}}} lists 21 ports.
   * See also #52468.
 * Support Fortran compilers **without** the [https://github.com/macports
 /macports-ports/blob/master/_resources/port1.0/group/compilers-1.0.tcl
 compilers PortGroup], which is the
 [https://trac.macports.org/wiki/PortfileRecipes#fortran current
 recommendation].
 * Simplify (eliminate?) the [https://github.com/macports/macports-
 ports/blob/master/_resources/port1.0/group/compilers-1.0.tcl compilers
 PortGroup].
 * Add the latest stable [https://github.com/macports/macports-
 ports/tree/master/lang/gcc7 GCC] and [https://github.com/macports
 /macports-ports/tree/master/lang/llvm-5.0 Clang] compilers to the the
 compilers [https://github.com/macports/macports-
 base/blob/da3909b0ffab909602920f63a77b13e4016af519/src/port1.0/portconfigure.tcl#L552
 fallback list].
 * Minimize the dependencies when using a MacPorts compiler.
   * When using MacPorts GCC for example, the compiler is added as a
 library dependency.
   * The compiler should be a build dependency with libgcc as the library
 dependency.
 * Improve the compiler choices for [https://lists.macports.org/pipermail
 /macports-dev/2017-October/thread.html#36685 PPC systems].
 * Turn off universal support when MacPorts GCC is used.

 I have created a [https://github.com/macports/macports-
 ports/blob/master/_resources/port1.0/group/languages-1.0.tcl PortGroup] to
 test these changes.[[BR]]
 If successful, they can be incorporated into the base code.

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Ticket URL: <https://trac.macports.org/ticket/55139>
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