opensmtpd-filter-dkimout/build.rs

use std::env;

const VARLIBDIR_NAME: &str = "VARLIBDIR";
const VARLIBDIR_VALUE_DEFAULT: &str = "/var/lib/";

fn main() {
	if env::var(VARLIBDIR_NAME).is_err() {
		println!(
			"cargo:rustc-env={}={}",
			VARLIBDIR_NAME, VARLIBDIR_VALUE_DEFAULT
		);
	}
}