tari_crypto 0.9.0

// Copyright 2020. The Tari Project
// Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
// following conditions are met:
// 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following
// disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
// following disclaimer in the documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
// products derived from this software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
// USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

use cbindgen::Config;
use std::{env, path::Path};

fn main() {
    let needs_ffi = &env::var("CARGO_FEATURE_FFI").unwrap_or_default() == "1";
    if needs_ffi {
        generate_ffi_header();
    }
}

fn generate_ffi_header() {
    let crate_env = env::var("CARGO_MANIFEST_DIR").unwrap();
    let crate_path = Path::new(&crate_env);
    let config = Config::from_root_or_default(crate_path);
    cbindgen::Builder::new()
        .with_crate(crate_path.to_str().unwrap())
        .with_config(config)
        .generate()
        .expect("Unable to generate bindings")
        .write_to_file("libtari/tari_crypto.h");
}