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rust/tests/run-make/print-native-static-libs/rmake.rs

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Rust

//! This checks the output of `--print=native-static-libs`
//!
//! Specifically, this test makes sure that one and only one
//! note is emitted with the text "native-static-libs:" as prefix
//! that the note contains the link args given in the source code
//! and cli of the current crate and downstream crates.
//!
//! It also checks that there aren't any duplicated consecutive
//! args, as they are useless and suboptimal for debugability.
//! See https://github.com/rust-lang/rust/issues/113209.
//@ ignore-cross-compile
//@ ignore-wasm
extern crate run_make_support;
use std::io::BufRead;
use run_make_support::rustc;
fn main() {
// build supporting crate
rustc()
.input("bar.rs")
.crate_type("rlib")
.arg("-lbar_cli")
.run();
// build main crate as staticlib
let output = rustc()
.input("foo.rs")
.crate_type("staticlib")
.arg("-lfoo_cli")
.arg("-lfoo_cli") // 2nd time
.print("native-static-libs")
.run();
let mut found_note = false;
for l in output.stderr.lines() {
let l = l.expect("utf-8 string");
let Some(args) = l.strip_prefix("note: native-static-libs:") else { continue; };
assert!(!found_note);
found_note = true;
let args: Vec<&str> = args.trim().split_ascii_whitespace().collect();
assert!(args.contains(&"-lglib-2.0")); // in bar.rs
assert!(args.contains(&"-lsystemd")); // in foo.rs
assert!(args.contains(&"-lbar_cli"));
assert!(args.contains(&"-lfoo_cli"));
// make sure that no args are consecutively present
let dedup_args: Vec<&str> = {
let mut args = args.clone();
args.dedup();
args
};
assert_eq!(args, dedup_args);
}
assert!(found_note);
}