build.rs

fn main() {
    #[cfg(feature = "linked")]
    {
        use std::env;

        let target_family = env::var("CARGO_CFG_TARGET_FAMILY").unwrap();
        let target_pointer_width = env::var("CARGO_CFG_TARGET_POINTER_WIDTH").unwrap();

        println!("cargo:rerun-if-env-changed=VULKAN_SDK");
        if let Ok(var) = env::var("VULKAN_SDK") {
            let suffix = match (&*target_family, &*target_pointer_width) {
                ("windows", "32") => "Lib32",
                ("windows", "64") => "Lib",
                _ => "lib",
            };
            println!("cargo:rustc-link-search={var}/{suffix}");
        }
        let lib = match &*target_family {
            "windows" => "vulkan-1",
            _ => "vulkan",
        };
        println!("cargo:rustc-link-lib={lib}");
    }
}