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authorMiguel Ojeda <ojeda@kernel.org>2023-06-16 02:16:29 +0200
committerMiguel Ojeda <ojeda@kernel.org>2023-08-10 01:18:34 +0200
commitf295522886a4ebb628cadb2cd74d0661d6292978 (patch)
tree87490c3cb9df92237c60b2fce7a634d7ce4bff13
parent7cd6a3e1f94bab4f2a3425e06f70ab13eb8190d4 (diff)
kbuild: rust_is_available: handle failures calling `$RUSTC`/`$BINDGEN`
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>
-rwxr-xr-xscripts/rust_is_available.sh28
1 files changed, 26 insertions, 2 deletions
diff --git a/scripts/rust_is_available.sh b/scripts/rust_is_available.sh
index b7e0781fdea9..da8296cd9b8d 100755
--- a/scripts/rust_is_available.sh
+++ b/scripts/rust_is_available.sh
@@ -81,8 +81,20 @@ fi
# Check that the Rust compiler version is suitable.
#
# Non-stable and distributions' versions may have a version suffix, e.g. `-dev`.
+rust_compiler_output=$( \
+ LC_ALL=C "$RUSTC" --version 2>/dev/null
+) || rust_compiler_code=$?
+if [ -n "$rust_compiler_code" ]; then
+ echo >&2 "***"
+ echo >&2 "*** Running '$RUSTC' to check the Rust compiler version failed with"
+ echo >&2 "*** code $rust_compiler_code. See output and docs below for details:"
+ echo >&2 "***"
+ echo >&2 "$rust_compiler_output"
+ echo >&2 "***"
+ exit 1
+fi
rust_compiler_version=$( \
- LC_ALL=C "$RUSTC" --version 2>/dev/null \
+ echo "$rust_compiler_output" \
| sed -nE '1s:.*rustc ([0-9]+\.[0-9]+\.[0-9]+).*:\1:p'
)
rust_compiler_min_version=$($min_tool_version rustc)
@@ -108,8 +120,20 @@ fi
# Check that the Rust bindings generator is suitable.
#
# Non-stable and distributions' versions may have a version suffix, e.g. `-dev`.
+rust_bindings_generator_output=$( \
+ LC_ALL=C "$BINDGEN" --version 2>/dev/null
+) || rust_bindings_generator_code=$?
+if [ -n "$rust_bindings_generator_code" ]; then
+ echo >&2 "***"
+ echo >&2 "*** Running '$BINDGEN' to check the Rust bindings generator version failed with"
+ echo >&2 "*** code $rust_bindings_generator_code. See output and docs below for details:"
+ echo >&2 "***"
+ echo >&2 "$rust_bindings_generator_output"
+ echo >&2 "***"
+ exit 1
+fi
rust_bindings_generator_version=$( \
- LC_ALL=C "$BINDGEN" --version 2>/dev/null \
+ echo "$rust_bindings_generator_output" \
| sed -nE '1s:.*bindgen ([0-9]+\.[0-9]+\.[0-9]+).*:\1:p'
)
rust_bindings_generator_min_version=$($min_tool_version bindgen)