extern crate bindgen;

use std::env;
use std::path::Path;
use std::process::Command;
use bindgen::Builder;

fn main() {
    let base = env::var("CARGO_MANIFEST_DIR").unwrap();
    let out  = env::var("OUT_DIR").unwrap();
    build(Path::new(&base), Path::new(&out));
}

fn build(base: &Path, out: &Path) {
    let bearssl = base.join("BearSSL");
    let header  = bearssl.join("inc").join("bearssl.h");
    let build   = bearssl.join("build");

    Command::new("make").current_dir(&bearssl).status().unwrap();

    println!("cargo:rustc-link-search=native={}", build.display());
    println!("cargo:rustc-link-lib=static=bearssl");

    let gen = Builder::default().header(header.to_string_lossy());
    gen.generate().unwrap().write_to_file(out.join("bearssl.rs")).unwrap();
}