Directly substitute $OPENSSL_PATH

           flags.push_str(" -l gdi32 -l wsock32");

        }

        // Android doesn't have libcrypto/libssl,

        // the toplevel Rust program should compile it themselves

        if target.find_str("android").is_some() {

            os::getenv("OPENSSL_PATH").expect("Android does not provide openssl libraries, please \

            let path = os::getenv("OPENSSL_PATH").expect("Android does not provide openssl libraries, please \

                                                          build them yourselves (instructions in the README) \

                                                          and provide their location through $OPENSSL_PATH.");

            flags.push_str(" -L ${OPENSSL_PATH}");

            flags.push_str(format!(" -L {}", path).as_slice());

        }

        println!("cargo:rustc-flags={}", flags);