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Miguel Ojeda
9ce3cd48a4
[ Upstream commitf295522886] 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@mail.gmail.com/ Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Link: https://lore.kernel.org/r/20230616001631.463536-10-ojeda@kernel.org Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Stable-dep-of:5ce86c6c86("rust: suppress error messages from CONFIG_{RUSTC,BINDGEN}_VERSION_TEXT") Signed-off-by: Sasha Levin <sashal@kernel.org>