Generating a deprecation warning for macros

[Ian Lance Taylor]

On Thu, Sep 20, 2012 at 7:23 AM, Florian Weimer <fweimer@redhat.com> wrote:
> I would like to generate a deprecation warning for macros.  In the header
> file, I would like to have:
>
> #define FOO 127
> /* do something with FOO to mark it deprecated */
>
> And in client code which includes the header,
>
>   printf("%d", FOO);
>
> should print a compile-time warning.  Is this possible without changing GCC
> itself?

I don't think so.  We have deprecated attributes for functions,
variables, and types, but there is no notion of an attribute for
macros, and there is no support for marking a macro as deprecated.

Ian