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2e6d82c9c9
This stabilizes a subset of the `-Clinker-features` components on x64 linux: the lld opt-out. The opt-in is not stabilized, as interactions with other stable flags require more internal work, but are not needed for stabilizing using rust-lld by default. Similarly, since we only switch to rust-lld on x64 linux, the opt-out is only stabilized there. Other targets still require `-Zunstable-options` to use it.
43 lines
1.4 KiB
Rust
43 lines
1.4 KiB
Rust
// Checks debuginfo compression both for the always-enabled zlib, and when the optional zstd is
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// enabled:
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// - via rustc's `debuginfo-compression`,
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// - and via rust-lld's `compress-debug-sections`
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//@ needs-llvm-zstd: we want LLVM/LLD to be built with zstd support
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//@ needs-rust-lld: the system linker will most likely not support zstd
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//@ only-linux
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//@ ignore-cross-compile
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use run_make_support::{Rustc, llvm_readobj, run_in_tmpdir};
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fn check_compression(compression: &str, to_find: &str) {
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// check compressed debug sections via rustc flag
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prepare_and_check(to_find, |rustc| {
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rustc.arg(&format!("-Zdebuginfo-compression={compression}"))
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});
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// check compressed debug sections via rust-lld flag
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prepare_and_check(to_find, |rustc| {
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rustc.link_arg(&format!("-Wl,--compress-debug-sections={compression}"))
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});
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}
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fn prepare_and_check<F: FnOnce(&mut Rustc) -> &mut Rustc>(to_find: &str, prepare_rustc: F) {
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run_in_tmpdir(|| {
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let mut rustc = Rustc::new();
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rustc
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.arg("-Clinker-features=+lld")
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.arg("-Clink-self-contained=+linker")
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.arg("-Zunstable-options")
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.arg("-Cdebuginfo=full")
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.input("main.rs");
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prepare_rustc(&mut rustc).run();
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llvm_readobj().arg("-t").arg("main").run().assert_stdout_contains(to_find);
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});
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}
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fn main() {
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check_compression("zlib", "ZLIB");
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check_compression("zstd", "ZSTD");
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}
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