Re: [PATCH v2] kbuild: Make $(LLVM) more flexible

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On Wed, Mar 9, 2022 at 1:36 AM Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
>
> On Mon, Mar 07, 2022 at 11:08:29AM -0800, Nick Desaulniers wrote:
> > > +``LLVM=0`` is not the same as omitting ``LLVM`` altogether, it will behave like
> > > +``LLVM=1``.
> >
> > Hmm... I can see someone's build wrappers setting LLVM=1, then them
> > being surprised that appending LLVM=0 doesn't disable LLVM=1 as they
> > might expect.  But Masahiro says let's fix this later which is fine.
>
> What happens if you say LLVM= instead of LLVM=0 ?  Would that "undo"
> a prior LLVM=1 and use GCC instead?

I think so.


-- 
Best Regards
Masahiro Yamada



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