Re: [PATCH v3] kconfig: Support conditional deps using "depends on X if Y"

[Nathan Chancellor <nathan@kernel.org>]

Hi Graham,

On Mon, Dec 15, 2025 at 03:06:54PM -0800, Graham Roff wrote:
> From: Nicolas Pitre <nico@fluxnic.net>
> 
> Extend the "depends on" syntax to support conditional dependencies
> using "depends on X if Y". While functionally equivalent to "depends
> on X || (Y == n)", "depends on X if Y" is much more readable and
> makes the kconfig language uniform in supporting the "if <expr>"
> suffix.
> This also improves readability for "optional" dependencies, which
> are the subset of conditional dependencies where X is Y.
> Previously such optional dependencies had to be expressed as
> the counterintuitive "depends on X || !X", now this can be
> represented as "depends on X if X".
> 
> The change is implemented by converting the "X if Y" syntax into the
> "X || (Y == n)" syntax during "depends on" token processing.
> 
> Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
> 
> [Graham Roff: Rewrote commit message, updated patch, added tests]
> 
> Signed-off-by: Graham Roff <grahamr@qti.qualcomm.com>

Thanks, I think this is a reasonable extension and the updates to v3
clear up all of my concerns.

I plan to apply this to kbuild-next in a week or so to give adequate
time for people to comment and review it.

Cheers,
Nathan