Re: [PATCH 1/2] Documentation/llvm: drop note about LLVM=0

[Nathan Chancellor <nathan@kernel.org>]

On Thu, Feb 26, 2026 at 10:23:57PM +0100, Thomas Weißschuh wrote:
> Since commit 502678b88cb3 ("kbuild: Reject unexpected values for LLVM=")
> LLVM=0 generates an error instead of silently behaving unexpectedly.
> 
> Drop the now unnecessary note.
> 
> Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>

It might be worth keeping the note about LLVM=0 not being the same as
omitting LLVM altogether, as neither the documentation nor the error
message will say why that is not a valid value. Maybe:

  ``LLVM=0`` is not the same as omitting ``LLVM`` altogether. If you
  only wish to use certain LLVM utilities, use their respective make
  variables.

I don't feel that strongly about it though. Regardless:

Reviewed-by: Nathan Chancellor <nathan@kernel.org>

> ---
>  Documentation/kbuild/llvm.rst | 4 ----
>  1 file changed, 4 deletions(-)
> 
> diff --git a/Documentation/kbuild/llvm.rst b/Documentation/kbuild/llvm.rst
> index bc8a283bc44b..441d8786fcbc 100644
> --- a/Documentation/kbuild/llvm.rst
> +++ b/Documentation/kbuild/llvm.rst
> @@ -71,10 +71,6 @@ recommend::
>  
>  	PATH=/path/to/llvm/:$PATH make LLVM=-14
>  
> -``LLVM=0`` is not the same as omitting ``LLVM`` altogether, it will behave like
> -``LLVM=1``. If you only wish to use certain LLVM utilities, use their
> -respective make variables.
> -
>  The same value used for ``LLVM=`` should be set for each invocation of ``make``
>  if configuring and building via distinct commands. ``LLVM=`` should also be set
>  as an environment variable when running scripts that will eventually run
> 
> -- 
> 2.53.0
>