[Bug fortran/33456] New: Vendor extension: Use env. var. to set filename of preconnect unit

["burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Some vendors seemingly offer to set the filename of a pre-connected unit via an
environment variable.

I'm not sure we need this, but some other compilers seem to have it and it is
seemingly used:

http://groups.google.com/group/comp.lang.fortran/browse_thread/thread/16d2c1d82a05edb4


-- 
           Summary: Vendor extension: Use env. var.  to set filename of
                    preconnect unit
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33456