fn main() {
println!(
"cargo:rustc-env=BUILD_TARGET={}",
std::env::var("TARGET").unwrap()
);
println!(
"cargo:rustc-env=BUILD_HOST={}",
std::env::var("HOST").unwrap()
);
let emscripten_version = std::fs::read_to_string("emscripten-version").unwrap();
println!("cargo:rustc-env=EMSCRIPTEN_VERSION={emscripten_version}");
}