fn main() {
println!("cargo::rustc-check-cfg=cfg(backend)");
if cfg!(feature = "std") {
println!("cargo::rustc-cfg=backend");
}
println!("cargo::rustc-check-cfg=cfg(assertions)");
if cfg!(feature = "assertions") || cfg!(debug_assertions) && !cfg!(feature = "no-assertions") {
println!("cargo::rustc-cfg=assertions");
}
}