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SubjectRe: [PATCH v8 27/31] Kbuild: add Rust support
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Masahiro Yamada <masahiroy@kernel.org> writes:
> On Tue, Aug 2, 2022 at 10:53 AM Miguel Ojeda <ojeda@kernel.org> wrote:
>>
>> Having all the new files in place, we now enable Rust support
>> in the build system, including `Kconfig` entries related to Rust,
>> the Rust configuration printer, the target specification
>> generation script, the version detection script and a few
>> other bits.
...
>> +
>> +config RUSTC_VERSION_TEXT
>> + string
>> + depends on RUST
>> + default $(shell,command -v $(RUSTC) >/dev/null 2>&1 && $(RUSTC) --version || echo n)
>> +
>> +config BINDGEN_VERSION_TEXT
>> + string
>> + depends on RUST
>> + default $(shell,command -v $(BINDGEN) >/dev/null 2>&1 && $(BINDGEN) --version || echo n)
>> +
>
> Where are these config options used?
>
> I grep'ed but no hit.
>
> masahiro@zoe:~/ref/linux-next$ git grep RUSTC_VERSION_TEXT
> init/Kconfig:config RUSTC_VERSION_TEXT
> masahiro@zoe:~/ref/linux-next$ git grep BINDGEN_VERSION_TEXT
> init/Kconfig:config BINDGEN_VERSION_TEXT

That came up before in a review by Nick:

Miguel wrote:
> Nick wrote:
> > Are these two kconfigs used anywhere?
>
> Not for the moment, but it could still be useful when getting
> `.config` reports (and we could add it to `LINUX_COMPILER` etc. in the
> future).

https://lore.kernel.org/all/CANiq72n2bU3LSGu-4v66nif_95EVq--z2X_F2V7JBPU8v=h8EA@mail.gmail.com/


cheers

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