| 
 | 1 | +//! This checks the output of `--print=native-static-libs`  | 
 | 2 | +//!  | 
 | 3 | +//! Specifically, this test makes sure that one and only one  | 
 | 4 | +//! note is emitted with the text "native-static-libs:" as prefix  | 
 | 5 | +//! that the note contains the link args given in the source code  | 
 | 6 | +//! and cli of the current crate and downstream crates.  | 
 | 7 | +//!  | 
 | 8 | +//! It also checks that there aren't any duplicated consecutive  | 
 | 9 | +//! args, as they are useless and suboptimal for debugability.  | 
 | 10 | +//! See https://github.com/rust-lang/rust/issues/113209.  | 
 | 11 | +
  | 
 | 12 | +//@ ignore-cross-compile  | 
 | 13 | +//@ ignore-wasm  | 
 | 14 | + | 
 | 15 | +extern crate run_make_support;  | 
 | 16 | + | 
 | 17 | +use std::io::BufRead;  | 
 | 18 | + | 
 | 19 | +use run_make_support::{rustc, is_msvc};  | 
 | 20 | + | 
 | 21 | +fn main() {  | 
 | 22 | +    // build supporting crate  | 
 | 23 | +    rustc()  | 
 | 24 | +        .input("bar.rs")  | 
 | 25 | +        .crate_type("rlib")  | 
 | 26 | +        .arg("-lbar_cli")  | 
 | 27 | +        .run();  | 
 | 28 | + | 
 | 29 | +    // build main crate as staticlib  | 
 | 30 | +    let output = rustc()  | 
 | 31 | +        .input("foo.rs")  | 
 | 32 | +        .crate_type("staticlib")  | 
 | 33 | +        .arg("-lfoo_cli")  | 
 | 34 | +        .arg("-lfoo_cli") // 2nd time  | 
 | 35 | +        .print("native-static-libs")  | 
 | 36 | +        .run();  | 
 | 37 | + | 
 | 38 | +    let mut found_note = false;  | 
 | 39 | +    for l in output.stderr.lines() {  | 
 | 40 | +        let l = l.expect("utf-8 string");  | 
 | 41 | + | 
 | 42 | +        let Some(args) = l.strip_prefix("note: native-static-libs:") else { continue; };  | 
 | 43 | +        assert!(!found_note);  | 
 | 44 | +        found_note = true;  | 
 | 45 | + | 
 | 46 | +        let args: Vec<&str> = args.trim().split_ascii_whitespace().collect();  | 
 | 47 | + | 
 | 48 | +        macro_rules! assert_contains_lib {  | 
 | 49 | +            ($lib:literal in $args:ident) => {{  | 
 | 50 | +                let lib = format!(  | 
 | 51 | +                    "{}{}{}",  | 
 | 52 | +                    if !is_msvc() { "-l" } else { "" },  | 
 | 53 | +                    $lib,  | 
 | 54 | +                    if !is_msvc() { "" } else { ".lib" },  | 
 | 55 | +                );  | 
 | 56 | +                let found = $args.contains(&&*lib);  | 
 | 57 | +                assert!(found, "unable to find lib `{}` in those linker args: {:?}", lib, $args);  | 
 | 58 | +            }}  | 
 | 59 | +        }  | 
 | 60 | + | 
 | 61 | +        assert_contains_lib!("glib-2.0" in args); // in bar.rs  | 
 | 62 | +        assert_contains_lib!("systemd" in args);  // in foo.rs  | 
 | 63 | +        assert_contains_lib!("bar_cli" in args);  | 
 | 64 | +        assert_contains_lib!("foo_cli" in args);  | 
 | 65 | + | 
 | 66 | +        // make sure that no args are consecutively present  | 
 | 67 | +        let dedup_args: Vec<&str> = {  | 
 | 68 | +            let mut args = args.clone();  | 
 | 69 | +            args.dedup();  | 
 | 70 | +            args  | 
 | 71 | +        };  | 
 | 72 | +        assert_eq!(args, dedup_args);  | 
 | 73 | +    }  | 
 | 74 | + | 
 | 75 | +    assert!(found_note);  | 
 | 76 | +}  | 
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