[Bug bootstrap/87788] [9 Regression] Bootstrap fails for x86_64-apple-darwin* with default languages selection after D addition.

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87788

--- Comment #9 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Buclaw from comment #8)
> (In reply to Iain Sandoe from comment #6)
> > 
> > hmm - isn't there a way to put it in the non-default category instead so
> > that someone trying to make it work doesn't need to hack configure?
> > 
> > and then just not build libphobos if d is not being built?
> > 
> 
> So something like.
> 
> # Disable the D frontend on systems where it is known to not work.
> # For testing, you can override this with --enable-languages=d.
> case ,${enable_languages}, in
>   *,d,*)
>     ;;
>   *)
>     case "${target}" in
>       *-*-darwin* | *-*-cygwin* | *-*-mingw*)
>        echo "$enable_languages"
>        unsupported_languages="$unsupported_languages d"
>        ;;
>     esac
>     ;;
> esac
> 
> 
> There'd be large swaths of functionality unavailable if without libphobos,
> but a standalone compiler is still workable given that there's an object.d
> in the search paths.

good motivation for the (very few) Darwin folks to try and fix it .. 

thanks, I'll update in a little while - hopefully after the next C++ stds
meeting there will be some cycles to try and tackle this.

polishing new additions in stage 3 is expected, I think.