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63 lines
2.2 KiB
Rust
63 lines
2.2 KiB
Rust
// Test linking using `cc` with `rust-lld`, using the unstable CLI described in MCP 510
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// see https://github.com/rust-lang/compiler-team/issues/510 for more info
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//@ needs-rust-lld
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//@ ignore-msvc
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//@ ignore-s390x lld does not yet support s390x as target
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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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// Opt-in to lld and the self-contained linker, to link with rust-lld. We'll check that by
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// asking the linker 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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.arg("-Zlinker-features=+lld")
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.arg("-Clink-self-contained=+linker")
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.arg("-Zunstable-options")
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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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// It should not be used when we explictly opt-out of lld.
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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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// While we're here, also check that the last linker feature flag "wins" when passed multiple
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// times to rustc.
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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("-Clink-self-contained=+linker")
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.arg("-Zunstable-options")
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.arg("-Zlinker-features=-lld")
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.arg("-Zlinker-features=+lld")
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.arg("-Zlinker-features=-lld,+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 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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