[Bug libobjc/64051] broken exception model detection in libobjc's configure

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64051

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Pierre Ossman from comment #6)
> Just to make sure I understand you perfectly. This is not supported:
> 
>   ../configure --build=A --host=B --target=B

By itself yes this is not supported.

> 
> Instead you have to do:
> 
>   ../configure --build=A --host=A --target=B
> 
>   Then use that to:
> 
>   ../configure --build=A --host=B --target=B
> 
> And those two compilers better have the same settings with regard to the
> target or you're bound to get problems.
> 
> Have I understood it correctly?

Yes.