[m-rev.] for review: drop support for lcc

[Julien Fischer]

On Mon, Sep 29, 2014 at 4:55 PM, Peter Wang <novalazy at gmail.com> wrote:

> On Mon, 29 Sep 2014 15:52:00 +1000 (EST), Julien Fischer <
> jfischer at opturion.com> wrote:
> >
> > For review by anyone.
> >
> > ---------------------
> >
> > Drop support for lcc.
> >
> > Drop support for lcc as a C compiler.  lcc itself does not seem to have
> been
> > updated since around 2010 and Mercury's support for it has not been
> updated for
> > quite a while before that.
> >
> > Derivatives of lcc, for example lcc-win32, would almost certainly need
> to be
> > treated separately anyway, so this change doesn't affect them (i.e. they
> are
> > already not supported).
> >
> > configure.ac:
> >       Do not recognise lcc as a C compiler.
> >
> >       Unrelated change: remove residual support for a.out executables on
> Linux.
> >
> > scripts/mgnuc_file_opts.sh-subr:
> >       Do not define the macros __EXTENSIONS__ and _GNU_SOURCE if the
> mgnuc script
> >       is invoked with --no-ansi.  This was originally done to support
> lcc on Linux.
> >       Doing so on *all* systems as this code actually does is not a good
> idea.
> >       (If it becomes necessary to reinstate this behaviour on some
> system, it
> >       should be controlled from the configure script not here.)
> >
> > scripts/mgnuc.in:
> > scripts/ml.in:
> > compiler/compile_target_code.m:
> > compiler/handle_options.m:
> > compiler/globals.m:
> >       Delete support for lcc.
> >
> > README.lcc:
> >       Delete this file.
>
> It looks fine.  git grep 'lcc' reveals a few more mentions and
> workarounds that could be removed.
>

With the exception of the ones in the boehm_gc directory, I'll got through
and remove them.

Cheers,
Julien.
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