cargo/tests/testsuite/cross_compile.rs

//! Tests for cross compiling with --target.
//!
//! See `cargo_test_support::cross_compile` for more detail.

use cargo_test_support::rustc_host;
use cargo_test_support::{basic_bin_manifest, basic_manifest, cross_compile, project};

#[cargo_test]
fn simple_cross() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.0"
                authors = []
                build = "build.rs"
            "#,
        )
        .file(
            "build.rs",
            &format!(
                r#"
                    fn main() {{
                        assert_eq!(std::env::var("TARGET").unwrap(), "{}");
                    }}
                "#,
                cross_compile::alternate()
            ),
        )
        .file(
            "src/main.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    let target = cross_compile::alternate();
    p.cargo("build -v --target").arg(&target).run();
    assert!(p.target_bin(target, "foo").is_file());

    if cross_compile::can_run_on_host() {
        p.process(&p.target_bin(target, "foo")).run();
    }
}

#[cargo_test]
fn simple_cross_config() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            ".cargo/config",
            &format!(
                r#"
                    [build]
                    target = "{}"
                "#,
                cross_compile::alternate()
            ),
        )
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.0"
                authors = []
                build = "build.rs"
            "#,
        )
        .file(
            "build.rs",
            &format!(
                r#"
                    fn main() {{
                        assert_eq!(std::env::var("TARGET").unwrap(), "{}");
                    }}
                "#,
                cross_compile::alternate()
            ),
        )
        .file(
            "src/main.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    let target = cross_compile::alternate();
    p.cargo("build -v").run();
    assert!(p.target_bin(target, "foo").is_file());

    if cross_compile::can_run_on_host() {
        p.process(&p.target_bin(target, "foo")).run();
    }
}

#[cargo_test]
fn simple_deps() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.1"
                authors = []

                [dependencies.bar]
                path = "../bar"
            "#,
        )
        .file("src/main.rs", "extern crate bar; fn main() { bar::bar(); }")
        .build();
    let _p2 = project()
        .at("bar")
        .file("Cargo.toml", &basic_manifest("bar", "0.0.1"))
        .file("src/lib.rs", "pub fn bar() {}")
        .build();

    let target = cross_compile::alternate();
    p.cargo("build --target").arg(&target).run();
    assert!(p.target_bin(target, "foo").is_file());

    if cross_compile::can_run_on_host() {
        p.process(&p.target_bin(target, "foo")).run();
    }
}

/// Always take care of setting these so that
/// `cross_compile::alternate()` is the actually-picked target
fn per_crate_target_test(
    default_target: Option<&'static str>,
    forced_target: Option<&'static str>,
    arg_target: Option<&'static str>,
) {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            &format!(
                r#"
                    cargo-features = ["per-package-target"]

                    [package]
                    name = "foo"
                    version = "0.0.0"
                    authors = []
                    build = "build.rs"
                    {}
                    {}
                "#,
                default_target
                    .map(|t| format!(r#"default-target = "{}""#, t))
                    .unwrap_or(String::new()),
                forced_target
                    .map(|t| format!(r#"forced-target = "{}""#, t))
                    .unwrap_or(String::new()),
            ),
        )
        .file(
            "build.rs",
            &format!(
                r#"
                    fn main() {{
                        assert_eq!(std::env::var("TARGET").unwrap(), "{}");
                    }}
                "#,
                cross_compile::alternate()
            ),
        )
        .file(
            "src/main.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    let mut cmd = p.cargo("build -v");
    if let Some(t) = arg_target {
        cmd.arg("--target").arg(&t);
    }
    cmd.masquerade_as_nightly_cargo(&["per-package-target"])
        .run();
    assert!(p.target_bin(cross_compile::alternate(), "foo").is_file());

    if cross_compile::can_run_on_host() {
        p.process(&p.target_bin(cross_compile::alternate(), "foo"))
            .run();
    }
}

#[cargo_test]
fn per_crate_default_target_is_default() {
    per_crate_target_test(Some(cross_compile::alternate()), None, None);
}

#[cargo_test]
fn per_crate_default_target_gets_overridden() {
    per_crate_target_test(
        Some(cross_compile::unused()),
        None,
        Some(cross_compile::alternate()),
    );
}

#[cargo_test]
fn per_crate_forced_target_is_default() {
    per_crate_target_test(None, Some(cross_compile::alternate()), None);
}

#[cargo_test]
fn per_crate_forced_target_does_not_get_overridden() {
    per_crate_target_test(
        None,
        Some(cross_compile::alternate()),
        Some(cross_compile::unused()),
    );
}

#[cargo_test]
fn workspace_with_multiple_targets() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [workspace]
                members = ["native", "cross"]
            "#,
        )
        .file(
            "native/Cargo.toml",
            r#"
                cargo-features = ["per-package-target"]

                [package]
                name = "native"
                version = "0.0.0"
                authors = []
                build = "build.rs"
            "#,
        )
        .file(
            "native/build.rs",
            &format!(
                r#"
                    fn main() {{
                        assert_eq!(std::env::var("TARGET").unwrap(), "{}");
                    }}
                "#,
                cross_compile::native()
            ),
        )
        .file(
            "native/src/main.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::native_arch()
            ),
        )
        .file(
            "cross/Cargo.toml",
            &format!(
                r#"
                    cargo-features = ["per-package-target"]

                    [package]
                    name = "cross"
                    version = "0.0.0"
                    authors = []
                    build = "build.rs"
                    default-target = "{}"
                "#,
                cross_compile::alternate(),
            ),
        )
        .file(
            "cross/build.rs",
            &format!(
                r#"
                    fn main() {{
                        assert_eq!(std::env::var("TARGET").unwrap(), "{}");
                    }}
                "#,
                cross_compile::alternate()
            ),
        )
        .file(
            "cross/src/main.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    let mut cmd = p.cargo("build -v");
    cmd.masquerade_as_nightly_cargo(&["per-package-target"])
        .run();

    assert!(p.bin("native").is_file());
    assert!(p.target_bin(cross_compile::alternate(), "cross").is_file());

    p.process(&p.bin("native")).run();
    if cross_compile::can_run_on_host() {
        p.process(&p.target_bin(cross_compile::alternate(), "cross"))
            .run();
    }
}

#[cargo_test]
fn linker() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let p = project()
        .file(
            ".cargo/config",
            &format!(
                r#"
                    [target.{}]
                    linker = "my-linker-tool"
                "#,
                target
            ),
        )
        .file("Cargo.toml", &basic_bin_manifest("foo"))
        .file(
            "src/foo.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    p.cargo("build -v --target")
        .arg(&target)
        .with_status(101)
        .with_stderr_contains(&format!(
            "\
[COMPILING] foo v0.5.0 ([CWD])
[RUNNING] `rustc --crate-name foo src/foo.rs [..]--crate-type bin \
    --emit=[..]link[..]-C debuginfo=2 [..]\
    -C metadata=[..] \
    --out-dir [CWD]/target/{target}/debug/deps \
    --target {target} \
    -C linker=my-linker-tool \
    -L dependency=[CWD]/target/{target}/debug/deps \
    -L dependency=[CWD]/target/debug/deps`
",
            target = target,
        ))
        .run();
}

#[cargo_test]
fn cross_tests() {
    if !cross_compile::can_run_on_host() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                authors = []
                version = "0.0.0"

                [[bin]]
                name = "bar"
            "#,
        )
        .file(
            "src/bin/bar.rs",
            &format!(
                r#"
                    #[allow(unused_extern_crates)]
                    extern crate foo;
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                    #[test] fn test() {{ main() }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .file(
            "src/lib.rs",
            &format!(
                r#"
                    use std::env;
                    pub fn foo() {{ assert_eq!(env::consts::ARCH, "{}"); }}
                    #[test] fn test_foo() {{ foo() }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    let target = cross_compile::alternate();
    p.cargo("test --target")
        .arg(&target)
        .with_stderr(&format!(
            "\
[COMPILING] foo v0.0.0 ([CWD])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] [..] (target/{triple}/debug/deps/foo-[..][EXE])
[RUNNING] [..] (target/{triple}/debug/deps/bar-[..][EXE])",
            triple = target
        ))
        .with_stdout_contains("test test_foo ... ok")
        .with_stdout_contains("test test ... ok")
        .run();
}

#[cargo_test]
fn no_cross_doctests() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "src/lib.rs",
            r#"
                //! ```
                //! extern crate foo;
                //! assert!(true);
                //! ```
            "#,
        )
        .build();

    let host_output = "\
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] [..] (target/debug/deps/foo-[..][EXE])
[DOCTEST] foo
";

    println!("a");
    p.cargo("test").with_stderr(&host_output).run();

    println!("b");
    let target = rustc_host();
    p.cargo("test -v --target")
        .arg(&target)
        // Unordered since the two `rustc` invocations happen concurrently.
        .with_stderr_unordered(&format!(
            "\
[COMPILING] foo v0.0.1 ([CWD])
[RUNNING] `rustc --crate-name foo [..]--crate-type lib[..]
[RUNNING] `rustc --crate-name foo [..]--test[..]
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[CWD]/target/{target}/debug/deps/foo-[..][EXE]`
[DOCTEST] foo
[RUNNING] `rustdoc [..]--target {target}[..]`
",
        ))
        .with_stdout(
            "
running 0 tests

test result: ok. 0 passed[..]


running 1 test
test src/lib.rs - (line 2) ... ok

test result: ok. 1 passed[..]

",
        )
        .run();

    println!("c");
    let target = cross_compile::alternate();

    // This will build the library, but does not build or run doc tests.
    // This should probably be a warning or error.
    p.cargo("test -v --doc --target")
        .arg(&target)
        .with_stderr(
            "\
[COMPILING] foo v0.0.1 ([CWD])
[RUNNING] `rustc --crate-name foo [..]
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[NOTE] skipping doctests for foo v0.0.1 ([ROOT]/foo) (lib), \
cross-compilation doctests are not yet supported
See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#doctest-xcompile \
for more information.
",
        )
        .run();

    if !cross_compile::can_run_on_host() {
        return;
    }

    // This tests the library, but does not run the doc tests.
    p.cargo("test -v --target")
        .arg(&target)
        .with_stderr(&format!(
            "\
[COMPILING] foo v0.0.1 ([CWD])
[RUNNING] `rustc --crate-name foo [..]--test[..]
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] `[CWD]/target/{triple}/debug/deps/foo-[..][EXE]`
[NOTE] skipping doctests for foo v0.0.1 ([ROOT]/foo) (lib), \
cross-compilation doctests are not yet supported
See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#doctest-xcompile \
for more information.
",
            triple = target
        ))
        .run();
}

#[cargo_test]
fn simple_cargo_run() {
    if !cross_compile::can_run_on_host() {
        return;
    }

    let p = project()
        .file(
            "src/main.rs",
            &format!(
                r#"
                    use std::env;
                    fn main() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    let target = cross_compile::alternate();
    p.cargo("run --target").arg(&target).run();
}

#[cargo_test]
fn cross_with_a_build_script() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.0"
                authors = []
                build = 'build.rs'
            "#,
        )
        .file(
            "build.rs",
            &format!(
                r#"
                    use std::env;
                    use std::path::PathBuf;
                    fn main() {{
                        assert_eq!(env::var("TARGET").unwrap(), "{0}");
                        let mut path = PathBuf::from(env::var_os("OUT_DIR").unwrap());
                        assert_eq!(path.file_name().unwrap().to_str().unwrap(), "out");
                        path.pop();
                        assert!(path.file_name().unwrap().to_str().unwrap()
                                    .starts_with("foo-"));
                        path.pop();
                        assert_eq!(path.file_name().unwrap().to_str().unwrap(), "build");
                        path.pop();
                        assert_eq!(path.file_name().unwrap().to_str().unwrap(), "debug");
                        path.pop();
                        assert_eq!(path.file_name().unwrap().to_str().unwrap(), "{0}");
                        path.pop();
                        assert_eq!(path.file_name().unwrap().to_str().unwrap(), "target");
                    }}
                "#,
                target
            ),
        )
        .file("src/main.rs", "fn main() {}")
        .build();

    p.cargo("build -v --target")
        .arg(&target)
        .with_stderr(&format!(
            "\
[COMPILING] foo v0.0.0 ([CWD])
[RUNNING] `rustc [..] build.rs [..] --out-dir [CWD]/target/debug/build/foo-[..]`
[RUNNING] `[CWD]/target/debug/build/foo-[..]/build-script-build`
[RUNNING] `rustc [..] src/main.rs [..] --target {target} [..]`
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
            target = target,
        ))
        .run();
}

#[cargo_test]
fn build_script_needed_for_host_and_target() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let host = rustc_host();
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.0"
                authors = []
                build = 'build.rs'

                [dependencies.d1]
                path = "d1"
                [build-dependencies.d2]
                path = "d2"
            "#,
        )
        .file(
            "build.rs",
            r#"
                #[allow(unused_extern_crates)]
                extern crate d2;
                fn main() { d2::d2(); }
            "#,
        )
        .file(
            "src/main.rs",
            "
            #[allow(unused_extern_crates)]
            extern crate d1;
            fn main() { d1::d1(); }
        ",
        )
        .file(
            "d1/Cargo.toml",
            r#"
                [package]
                name = "d1"
                version = "0.0.0"
                authors = []
                build = 'build.rs'
            "#,
        )
        .file("d1/src/lib.rs", "pub fn d1() {}")
        .file(
            "d1/build.rs",
            r#"
                use std::env;
                fn main() {
                    let target = env::var("TARGET").unwrap();
                    println!("cargo::rustc-flags=-L /path/to/{}", target);
                }
            "#,
        )
        .file(
            "d2/Cargo.toml",
            r#"
                [package]
                name = "d2"
                version = "0.0.0"
                authors = []

                [dependencies.d1]
                path = "../d1"
            "#,
        )
        .file(
            "d2/src/lib.rs",
            "
            #[allow(unused_extern_crates)]
            extern crate d1;
            pub fn d2() { d1::d1(); }
        ",
        )
        .build();

    p.cargo("build -v --target")
        .arg(&target)
        .with_stderr_contains(&"[COMPILING] d1 v0.0.0 ([CWD]/d1)")
        .with_stderr_contains(
            "[RUNNING] `rustc [..] d1/build.rs [..] --out-dir [CWD]/target/debug/build/d1-[..]`",
        )
        .with_stderr_contains("[RUNNING] `[CWD]/target/debug/build/d1-[..]/build-script-build`")
        .with_stderr_contains("[RUNNING] `rustc [..] d1/src/lib.rs [..]`")
        .with_stderr_contains("[COMPILING] d2 v0.0.0 ([CWD]/d2)")
        .with_stderr_contains(&format!(
            "[RUNNING] `rustc [..] d2/src/lib.rs [..] -L /path/to/{host}`",
            host = host
        ))
        .with_stderr_contains("[COMPILING] foo v0.0.0 ([CWD])")
        .with_stderr_contains(&format!(
            "[RUNNING] `rustc [..] build.rs [..] --out-dir [CWD]/target/debug/build/foo-[..] \
             -L /path/to/{host}`",
            host = host
        ))
        .with_stderr_contains(&format!(
            "[RUNNING] `rustc [..] src/main.rs [..] --target {target} [..] \
             -L /path/to/{target}`",
            target = target
        ))
        .run();
}

#[cargo_test]
fn build_deps_for_the_right_arch() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.0"
                authors = []

                [dependencies.d2]
                path = "d2"
            "#,
        )
        .file("src/main.rs", "extern crate d2; fn main() {}")
        .file("d1/Cargo.toml", &basic_manifest("d1", "0.0.0"))
        .file("d1/src/lib.rs", "pub fn d1() {}")
        .file(
            "d2/Cargo.toml",
            r#"
                [package]
                name = "d2"
                version = "0.0.0"
                authors = []
                build = "build.rs"

                [build-dependencies.d1]
                path = "../d1"
            "#,
        )
        .file("d2/build.rs", "extern crate d1; fn main() {}")
        .file("d2/src/lib.rs", "")
        .build();

    let target = cross_compile::alternate();
    p.cargo("build -v --target").arg(&target).run();
}

#[cargo_test]
fn build_script_only_host() {
    if cross_compile::disabled() {
        return;
    }

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.0"
                authors = []
                build = "build.rs"

                [build-dependencies.d1]
                path = "d1"
            "#,
        )
        .file("src/main.rs", "fn main() {}")
        .file("build.rs", "extern crate d1; fn main() {}")
        .file(
            "d1/Cargo.toml",
            r#"
                [package]
                name = "d1"
                version = "0.0.0"
                authors = []
                build = "build.rs"
            "#,
        )
        .file("d1/src/lib.rs", "pub fn d1() {}")
        .file(
            "d1/build.rs",
            r#"
                use std::env;

                fn main() {
                    assert!(env::var("OUT_DIR").unwrap().replace("\\", "/")
                                               .contains("target/debug/build/d1-"),
                            "bad: {:?}", env::var("OUT_DIR"));
                }
            "#,
        )
        .build();

    let target = cross_compile::alternate();
    p.cargo("build -v --target").arg(&target).run();
}

#[cargo_test]
fn plugin_build_script_right_arch() {
    if cross_compile::disabled() {
        return;
    }
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.1"
                authors = []
                build = "build.rs"

                [lib]
                name = "foo"
                plugin = true
            "#,
        )
        .file("build.rs", "fn main() {}")
        .file("src/lib.rs", "")
        .build();

    p.cargo("build -v --target")
        .arg(cross_compile::alternate())
        .with_stderr(
            "\
[WARNING] support for rustc plugins has been removed from rustc. library `foo` should not specify `plugin = true`
[WARNING] support for `plugin = true` will be removed from cargo in the future
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..] build.rs [..]`
[RUNNING] `[..]/build-script-build`
[RUNNING] `rustc [..] src/lib.rs [..]`
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
        )
        .run();
}

#[cargo_test]
fn build_script_with_platform_specific_dependencies() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let host = rustc_host();
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.1"
                authors = []
                build = "build.rs"

                [build-dependencies.d1]
                path = "d1"
            "#,
        )
        .file(
            "build.rs",
            "
            #[allow(unused_extern_crates)]
            extern crate d1;
            fn main() {}
        ",
        )
        .file("src/lib.rs", "")
        .file(
            "d1/Cargo.toml",
            &format!(
                r#"
                    [package]
                    name = "d1"
                    version = "0.0.0"
                    authors = []

                    [target.{}.dependencies]
                    d2 = {{ path = "../d2" }}
                "#,
                host
            ),
        )
        .file(
            "d1/src/lib.rs",
            "#[allow(unused_extern_crates)] extern crate d2;",
        )
        .file("d2/Cargo.toml", &basic_manifest("d2", "0.0.0"))
        .file("d2/src/lib.rs", "")
        .build();

    p.cargo("build -v --target")
        .arg(&target)
        .with_stderr(&format!(
            "\
[COMPILING] d2 v0.0.0 ([..])
[RUNNING] `rustc [..] d2/src/lib.rs [..]`
[COMPILING] d1 v0.0.0 ([..])
[RUNNING] `rustc [..] d1/src/lib.rs [..]`
[COMPILING] foo v0.0.1 ([..])
[RUNNING] `rustc [..] build.rs [..]`
[RUNNING] `[CWD]/target/debug/build/foo-[..]/build-script-build`
[RUNNING] `rustc [..] src/lib.rs [..] --target {target} [..]`
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
            target = target
        ))
        .run();
}

#[cargo_test]
fn platform_specific_dependencies_do_not_leak() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let host = rustc_host();
    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.1"
                authors = []
                build = "build.rs"

                [dependencies.d1]
                path = "d1"

                [build-dependencies.d1]
                path = "d1"
            "#,
        )
        .file("build.rs", "extern crate d1; fn main() {}")
        .file("src/lib.rs", "")
        .file(
            "d1/Cargo.toml",
            &format!(
                r#"
                    [package]
                    name = "d1"
                    version = "0.0.0"
                    authors = []

                    [target.{}.dependencies]
                    d2 = {{ path = "../d2" }}
                "#,
                host
            ),
        )
        .file("d1/src/lib.rs", "extern crate d2;")
        .file("d1/Cargo.toml", &basic_manifest("d1", "0.0.0"))
        .file("d2/src/lib.rs", "")
        .build();

    p.cargo("build -v --target")
        .arg(&target)
        .with_status(101)
        .with_stderr_contains("[..] can't find crate for `d2`[..]")
        .run();
}

#[cargo_test]
fn platform_specific_variables_reflected_in_build_scripts() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let host = rustc_host();
    let p = project()
        .file(
            "Cargo.toml",
            &format!(
                r#"
                    [package]
                    name = "foo"
                    version = "0.0.1"
                    authors = []
                    build = "build.rs"

                    [target.{host}.dependencies]
                    d1 = {{ path = "d1" }}

                    [target.{target}.dependencies]
                    d2 = {{ path = "d2" }}
                "#,
                host = host,
                target = target
            ),
        )
        .file(
            "build.rs",
            &format!(
                r#"
                    use std::env;

                    fn main() {{
                        let platform = env::var("TARGET").unwrap();
                        let (expected, not_expected) = match &platform[..] {{
                            "{host}" => ("DEP_D1_VAL", "DEP_D2_VAL"),
                            "{target}" => ("DEP_D2_VAL", "DEP_D1_VAL"),
                            _ => panic!("unknown platform")
                        }};

                        env::var(expected).ok()
                            .expect(&format!("missing {{}}", expected));
                        env::var(not_expected).err()
                            .expect(&format!("found {{}}", not_expected));
                    }}
                "#,
                host = host,
                target = target
            ),
        )
        .file("src/lib.rs", "")
        .file(
            "d1/Cargo.toml",
            r#"
                [package]
                name = "d1"
                version = "0.0.0"
                authors = []
                links = "d1"
                build = "build.rs"
            "#,
        )
        .file(
            "d1/build.rs",
            r#"fn main() { println!("cargo::metadata=val=1") }"#,
        )
        .file("d1/src/lib.rs", "")
        .file(
            "d2/Cargo.toml",
            r#"
                [package]
                name = "d2"
                version = "0.0.0"
                authors = []
                links = "d2"
                build = "build.rs"
            "#,
        )
        .file(
            "d2/build.rs",
            r#"fn main() { println!("cargo::metadata=val=1") }"#,
        )
        .file("d2/src/lib.rs", "")
        .build();

    p.cargo("build -v").run();
    p.cargo("build -v --target").arg(&target).run();
}

#[cargo_test]
#[cfg_attr(
    target_os = "macos",
    ignore = "don't have a dylib cross target on macos"
)]
fn cross_test_dylib() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();

    let p = project()
        .file(
            "Cargo.toml",
            r#"
                [package]
                name = "foo"
                version = "0.0.1"
                authors = []

                [lib]
                name = "foo"
                crate_type = ["dylib"]

                [dependencies.bar]
                path = "bar"
            "#,
        )
        .file(
            "src/lib.rs",
            r#"
                extern crate bar as the_bar;

                pub fn bar() { the_bar::baz(); }

                #[test]
                fn foo() { bar(); }
            "#,
        )
        .file(
            "tests/test.rs",
            r#"
                extern crate foo as the_foo;

                #[test]
                fn foo() { the_foo::bar(); }
            "#,
        )
        .file(
            "bar/Cargo.toml",
            r#"
                [package]
                name = "bar"
                version = "0.0.1"
                authors = []

                [lib]
                name = "bar"
                crate_type = ["dylib"]
            "#,
        )
        .file(
            "bar/src/lib.rs",
            &format!(
                r#"
                     use std::env;
                     pub fn baz() {{
                        assert_eq!(env::consts::ARCH, "{}");
                    }}
                "#,
                cross_compile::alternate_arch()
            ),
        )
        .build();

    p.cargo("test --target")
        .arg(&target)
        .with_stderr(&format!(
            "\
[COMPILING] bar v0.0.1 ([CWD]/bar)
[COMPILING] foo v0.0.1 ([CWD])
[FINISHED] test [unoptimized + debuginfo] target(s) in [..]
[RUNNING] [..] (target/{arch}/debug/deps/foo-[..][EXE])
[RUNNING] [..] (target/{arch}/debug/deps/test-[..][EXE])",
            arch = cross_compile::alternate()
        ))
        .with_stdout_contains_n("test foo ... ok", 2)
        .run();
}

#[cargo_test(nightly, reason = "-Zdoctest-xcompile is unstable")]
fn doctest_xcompile_linker() {
    if cross_compile::disabled() {
        return;
    }

    let target = cross_compile::alternate();
    let p = project()
        .file(
            ".cargo/config",
            &format!(
                r#"
                    [target.{}]
                    linker = "my-linker-tool"
                "#,
                target
            ),
        )
        .file("Cargo.toml", &basic_manifest("foo", "0.1.0"))
        .file(
            "src/lib.rs",
            r#"
                /// ```
                /// assert_eq!(1, 1);
                /// ```
                pub fn foo() {}
            "#,
        )
        .build();

    // Fails because `my-linker-tool` doesn't actually exist.
    p.cargo("test --doc -v -Zdoctest-xcompile --target")
        .arg(&target)
        .with_status(101)
        .masquerade_as_nightly_cargo(&["doctest-xcompile"])
        .with_stderr_contains(&format!(
            "\
[RUNNING] `rustdoc --crate-type lib --crate-name foo --test [..]\
    --target {target} [..] -C linker=my-linker-tool[..]
",
            target = target,
        ))
        .run();
}