[RFC] PR 53063 encode group options in .opt files

[Gabriel Dos Reis]

On Sat, May 12, 2012 at 10:12 AM, Joseph S. Myers
<joseph@codesourcery.com> wrote:
> I don't think common.opt should have LangEnabledBy listing different
> languages, though; that information should be in the front ends' .opt
> files.

Agreed.

> And, before we add such language-specific enabling of a
> language-independent option, I'd like a good reason not to make -Wall a
> common option (also having language-specific aspects) that enables
> -Wunused for all languages - or else -Wall should (as a separate patch) be
> made to enable -Wunused for all languages, to make the semantics simpler
> and more consistent.

The trouble is there is no agreement on common understanding of "-Wall"
across front-ends, as the recent thread about -Wall showed.

-- Gaby