use std::env; mod configure; fn main() { let cfg = configure::Config::from_env(); println!("cargo:rerun-if-changed=build.rs"); println!("cargo:rustc-check-cfg=cfg(assert_no_panic)"); // If set, enable `no-panic`. Requires LTO (`release-opt` profile). if env::var("ENSURE_NO_PANIC").is_ok() { println!("cargo:rustc-cfg=assert_no_panic"); } configure::emit_libm_config(&cfg); }