Re: [PATCH v2 09/11] kbuild: rust_is_available: handle failures calling `$RUSTC`/`$BINDGEN`

[Martin Rodriguez Reboredo]

On 6/15/23 21:16, Miguel Ojeda wrote:
> The script already checks if `$RUSTC` and `$BINDGEN` exists via
> `command`, but the environment variables may point to a
> non-executable file, or the programs may fail for some other reason.
> While the script successfully exits with a failure as it should,
> the error given can be quite confusing depending on the shell and
> the behavior of its `command`. For instance, with `dash`:
>
>      $ RUSTC=./mm BINDGEN=bindgen CC=clang scripts/rust_is_available.sh
>      scripts/rust_is_available.sh: 19: arithmetic expression: expecting primary: "100000 *  + 100 *  + "
>
> Thus detect failure exit codes when calling `$RUSTC` and `$BINDGEN` and
> print a better message, in a similar way to what we do when extracting
> the `libclang` version found by `bindgen`.
>
> 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>