fn main() {
    if cfg!(target_os = "macos") {
        // if we're on Mac OS X we'll kindly add DYLD_LIBRARY_PATH to rustc's
        // linker search path
        if let Some(dyld_paths) = option_env!("DYLD_LIBRARY_PATH") {
            print_paths(dyld_paths);
        }
        // if we're on Mac OS X we'll kindly add DYLD_FALLBACK_LIBRARY_PATH to rustc's
        // linker search path
        if let Some(dyld_fallback_paths) = option_env!("DYLD_FALLBACK_LIBRARY_PATH") {
            print_paths(dyld_fallback_paths);
        }
    }
}

fn print_paths(paths: &str) {
    for path in paths.split(':').filter(|x| !x.is_empty()) {
        println!("cargo:rustc-link-search=native={}", path)
    }
}