build.rs

/* -*- Mode: rust; rust-indent-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

use bindgen;

use std::env;
use std::path::PathBuf;

fn main() {
    let target_os = env::var("CARGO_CFG_TARGET_OS").expect("CARGO_CFG_TARGET_OS unset?");
    if target_os == "windows" {
        let bindings = bindgen::Builder::default()
            .header("src/wrapper-windows.h")
            .whitelist_function("NCryptSignHash")
            .generate()
            .expect("Unable to generate bindings");
        let out_path = PathBuf::from(env::var("OUT_DIR").expect("OUT_DIR unset?"));
        bindings
            .write_to_file(out_path.join("bindings.rs"))
            .expect("Couldn't write bindings");
    }
}