Re: [RFC PATCH 2/6] kbuild: add "make tools_build" to build userspace tools from tools/

[sashiko-bot@kernel.org]

> The programs under tools/ have their own build systems and are not built
> by "make", so nothing builds them together with the kernel they belong
> to, and breakage in them is only noticed when someone happens to build
> them by hand, sometimes many stable releases later.
> 
> Add a "Build userspace tools from tools/" menu (CONFIG_TOOLS_BUILD) with
> an entry for each tool, and a "tools_build" target that builds the
> selected ones for the target:
> 
> - Each tool is built by its own build system, as it is built
>   standalone, into tools-build/ in the object tree. "make clean" removes
>   that directory without running the tools' own clean rules.
> 
> - The compiler is the one CONFIG_CC_CAN_LINK was tested with: $(CC),
>   USERCFLAGS and KBUILD_USERABI, so cross builds, including LLVM=1
> [ ... ]
> The first entries are the tools that only need a C library: bootconfig,
> counter, dma, gpio, hv, iio, spi and usb.
> 
> Assisted-by: LLM
> Signed-off-by: Sasha Levin <sashal@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20261011233647.2454648-1-sashal@kernel.org?part=2