Re: [PATCH v2 10/11] kbuild: rust_is_available: check that output looks as expected

[Martin Rodriguez Reboredo]

On 6/15/23 21:16, Miguel Ojeda wrote:
> The script already checks for `$RUSTC` and `$BINDGEN` existing
> and exiting without failure. However, one may still pass an
> unexpected binary that does not output what the later parsing
> expects. The script still successfully reports a failure as
> expected, but the error is confusing. For instance:
>
>      $ RUSTC=true BINDGEN=bindgen CC=clang scripts/rust_is_available.sh
>      scripts/rust_is_available.sh: 19: arithmetic expression: expecting primary: "100000 *  + 100 *  + "
>      ***
>      *** Please see Documentation/rust/quick-start.rst for details
>      *** on how to set up the Rust support.
>      ***
>
> Thus add an explicit check and a proper message for unexpected
> output from the called command.
>
> Similarly, do so for the `libclang` version parsing, too.
>
> Link: https://lore.kernel.org/rust-for-linux/CAK7LNAQYk6s11MASRHW6oxtkqF00EJVqhHOP=5rynWt-QDUsXw@xxxxxxxxxxxxxx/
> Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
> ---
> [...]

Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@xxxxxxxxx>