44 lines
1.4 KiB
Rust
44 lines
1.4 KiB
Rust
// Ensure that rust-lld is used as the default linker on `x86_64-unknown-linux-gnu`, and that it can
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// also be turned off with a CLI flag.
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//@ needs-rust-lld
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//@ only-x86_64-unknown-linux-gnu
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extern crate run_make_support;
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use run_make_support::regex::Regex;
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use run_make_support::rustc;
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use std::process::Output;
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fn main() {
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// A regular compilation should use rust-lld by default. We'll check that by asking the linker
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// to display its version number with a link-arg.
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let output = rustc()
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.env("RUSTC_LOG", "rustc_codegen_ssa::back::link=info")
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.link_arg("-Wl,-v")
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.input("main.rs")
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.run();
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assert!(
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find_lld_version_in_logs(output),
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"the LLD version string should be present in the output logs"
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);
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// But it can still be disabled by turning the linker feature off.
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let output = rustc()
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.env("RUSTC_LOG", "rustc_codegen_ssa::back::link=info")
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.link_arg("-Wl,-v")
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.arg("-Zlinker-features=-lld")
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.input("main.rs")
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.run();
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assert!(
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!find_lld_version_in_logs(output),
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"the LLD version string should not be present in the output logs"
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);
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}
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fn find_lld_version_in_logs(output: Output) -> bool {
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let lld_version_re = Regex::new(r"^LLD [0-9]+\.[0-9]+\.[0-9]+").unwrap();
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let stderr = std::str::from_utf8(&output.stderr).unwrap();
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stderr.lines().any(|line| lld_version_re.is_match(line))
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}
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