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Auto merge of #10149 - jyn514:duplicate-sysroot, r=flip1995

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Don't pass `--sysroot` twice if SYSROOT is set

This is useful for rust-lang/rust to allow setting a sysroot that's *only* for build scripts, different from the regular sysroot passed in RUSTFLAGS (since cargo doesn't apply RUSTFLAGS to build scripts or proc-macros).

That said, the exact motivation is not particularly important: this fixes a regression from
5907e9155e (r1060215684).

Note that only RUSTFLAGS is tested in the new integration test; passing --sysroot through `clippy-driver` never worked as far as I can tell, and no one is using it, so I didn't fix it here.

Helps with https://github.com/rust-lang/rust/pull/106394.

---

changelog: other: `SYSROOT` and `--sysroot` can now be set at the same time
[#10149](https://github.com/rust-lang/rust-clippy/pull/10149)
<!-- changelog_checked -->
This commit is contained in:
bors 2023-01-12 17:36:00 +00:00
commit f9ca9d4112
3 changed files with 20 additions and 1 deletions
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7
.github/driver.sh vendored
View file

@ -17,6 +17,13 @@ test "$sysroot" = $desired_sysroot
sysroot=$(SYSROOT=$desired_sysroot ./target/debug/clippy-driver --print sysroot)
test "$sysroot" = $desired_sysroot
# Check that the --sysroot argument is only passed once (SYSROOT is ignored)
(
cd rustc_tools_util
touch src/lib.rs
SYSROOT=/tmp RUSTFLAGS="--sysroot=$(rustc --print sysroot)" ../target/debug/cargo-clippy clippy --verbose
)
# Make sure this isn't set - clippy-driver should cope without it
unset CARGO_MANIFEST_DIR

5
src/driver.rs
View file

@ -256,11 +256,14 @@ pub fn main() {
LazyLock::force(&ICE_HOOK);
exit(rustc_driver::catch_with_exit_code(move || {
let mut orig_args: Vec<String> = env::args().collect();
let has_sysroot_arg = arg_value(&orig_args, "--sysroot", |_| true).is_some();
let sys_root_env = std::env::var("SYSROOT").ok();
let pass_sysroot_env_if_given = |args: &mut Vec<String>, sys_root_env| {
if let Some(sys_root) = sys_root_env {
args.extend(vec!["--sysroot".into(), sys_root]);
if !has_sysroot_arg {
args.extend(vec!["--sysroot".into(), sys_root]);
}
};
};

9
tests/integration.rs
View file

@ -1,3 +1,12 @@
//! This test is meant to only be run in CI. To run it locally use:
//!
//! `env INTEGRATION=rust-lang/log cargo test --test integration --features=integration`
//!
//! You can use a different `INTEGRATION` value to test different repositories.
//!
//! This test will clone the specified repository and run Clippy on it. The test succeeds, if
//! Clippy doesn't produce an ICE. Lint warnings are ignored by this test.
#![cfg(feature = "integration")]
#![cfg_attr(feature = "deny-warnings", deny(warnings))]
#![warn(rust_2018_idioms, unused_lifetimes)]