1
3 
fn main() {
2
3 
    // Check if the target is WebAssembly
3
3 
    let target = std::env::var("TARGET").unwrap_or_default();
4
3
5
3 
    if target.contains("wasm32") {
6 
        println!("cargo:rustc-cfg=target_arch=\"wasm32\"");
7 
        println!("cargo:rustc-cfg=wasm");
8
3 
    }
9
3 
}