PATCH: Make ObjC an extension of C (Take 2)

[Stan Shebs]

Ziemowit Laski wrote:

> Ok, I've incorporated some of Neil Booth's suggestions, notably
> renaming compiling_objc to flag_objc, and removing this flag
> from cpplib.  Selecting Objective-C will currently imply C89;
> I have a fix to c-parse.in in the queue which will allow C99
> designated initializers to coexist with ObjC messages; once that
> goes in, we could have ObjC imply C99 instead.
>
> I'm currently bootstrapping the whole thing on i686-pc-linux-gnu.
> OK for TOT if all goes well?

OK, with Neil's changes and the following tweaks.

> + /* The following flag is non-zero whenever ObjC or ObjC++ is being

Reword to say "Objective-C functionality" or something like that.  As
you yourself noted, references to things not actually in the source are
confusing at best.

>
> + /* The following flag is non-zero whenever ObjC or ObjC++ is being

Ditto.

> ! #ifdef OBJCPLUS
> !   cxx_init_options (clk_cplusplus);
> ! #else
> !   c_common_init_options (clk_c);
> ! #endif
> ! }

Don't forget about this bit...

Stan