Generate an initialization function for --library-fortran

[daviditen]

Initializing the runtime/modules for --library-fortran currently requires the library author to write an initialization function like:

export proc chpl_library_init_ftn() {
  extern proc chpl_library_init(argc: c_int, argv: c_ptr(c_ptr(c_char)));
  var filename = c"fake";
  chpl_library_init(1, c_ptrTo(filename): c_ptr(c_ptr(c_char)));;
  chpl__init_MyModuleName();
}

It would be good to generate an initializer like this so the library author doesn't need to.

[bradcray]

Given that we're now only conditionally useing ISO_Fortran_binding.chpl when --library-fortran is used, could this simply be made module-level initialization code in that module, such that it would run on program startup for any --library-fortran compilation? (in which case, maybe the module should also be renamed to something more general like FortranInterop.chpl or simply Fortran.chpl?)

[lydia-duncan]

Since the last line depends on the name of the program being compiled with --library-fortran, I'm not sure that is possible