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// Test linking using `cc` with `rust-lld`, using the unstable CLI described in MCP 510
// see https://github.com/rust-lang/compiler-team/issues/510 for more info
//@ needs-rust-lld
//@ ignore-s390x lld does not yet support s390x as target
use run_make_support::linker::{assert_rustc_doesnt_use_lld, assert_rustc_uses_lld};
use run_make_support::rustc;
fn main() {
// Opt-in to lld and the self-contained linker, to link with rust-lld. We'll check that by
// asking the linker to display its version number with a link-arg.
assert_rustc_uses_lld(
rustc()
.arg("-Zlinker-features=+lld")
.arg("-Clink-self-contained=+linker")
.arg("-Zunstable-options")
.input("main.rs"),
);
// It should not be used when we explicitly opt out of lld.
assert_rustc_doesnt_use_lld(rustc().arg("-Zlinker-features=-lld").input("main.rs"));
// While we're here, also check that the last linker feature flag "wins" when passed multiple
// times to rustc.
assert_rustc_uses_lld(
rustc()
.arg("-Clink-self-contained=+linker")
.arg("-Zunstable-options")
.arg("-Zlinker-features=-lld")
.arg("-Zlinker-features=+lld")
.arg("-Zlinker-features=-lld,+lld")
.input("main.rs"),
);
}
|
