rustix-libc-wrappers 0.1.1

Safe Rust bindings to `libc` functions
Documentation 
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use std::env::var;

fn main() {
    // Don't rerun this on changes other than build.rs, as we only depend on
    // the rustc version.
    println!("cargo:rerun-if-changed=build.rs");

    // Gather target information.
    let os = var("CARGO_CFG_TARGET_OS").unwrap();

    // Rust's libc crate groups some OS's together which have similar APIs;
    // create similarly-named features to make `cfg` tests more concise.
    let freebsdlike = os == "freebsd" || os == "dragonfly";
    if freebsdlike {
        use_feature("freebsdlike");
    }
    let netbsdlike = os == "openbsd" || os == "netbsd";
    if netbsdlike {
        use_feature("netbsdlike");
    }
    let apple = os == "macos" || os == "ios" || os == "tvos" || os == "visionos" || os == "watchos";
    if apple {
        use_feature("apple");
    }
    if os == "linux" || os == "l4re" || os == "android" || os == "emscripten" {
        use_feature("linux_like");
    }
    if os == "solaris" || os == "illumos" {
        use_feature("solarish");
    }
    if apple || freebsdlike || netbsdlike {
        use_feature("bsd");
    }

    // Add some additional common target combinations.

    // Android and "regular" Linux both use the Linux kernel.
    if os == "android" || os == "linux" {
        use_feature("linux_kernel");
    }
}

fn use_feature(feature: &str) {
    println!("cargo:rustc-cfg={}", feature);
}