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

fn main() {
    println!("cargo:rerun-if-changed=csrc/mt_crypto.c");
    println!("cargo:rerun-if-changed=csrc/mt_crypto.h");
    println!("cargo:rerun-if-changed=build.rs");

    let openssl = openssl_src::Build::new().build();
    let openssl_include = openssl.include_dir();
    let openssl_lib = openssl.lib_dir();

    cc::Build::new()
        .file("csrc/mt_crypto.c")
        .include("csrc")
        .include(openssl_include)
        .flag_if_supported("-std=c11")
        .flag_if_supported("-Wall")
        .flag_if_supported("-Wextra")
        .flag_if_supported("-Wpedantic")
        .flag_if_supported("-Werror")
        .flag_if_supported("-Wno-unused-parameter")
        .compile("mt_crypto");

    println!(
        "cargo:rustc-link-search=native={}",
        openssl_lib.to_str().expect("openssl lib path utf8")
    );
    println!("cargo:rustc-link-lib=static=ssl");
    println!("cargo:rustc-link-lib=static=crypto");

    let target_os = env::var("CARGO_CFG_TARGET_OS").expect("CARGO_CFG_TARGET_OS set by cargo");
    if target_os == "macos" {
        println!("cargo:rustc-link-lib=framework=Security");
        println!("cargo:rustc-link-lib=framework=CoreFoundation");
    } else if target_os == "linux" {
        println!("cargo:rustc-link-lib=dylib=dl");
        println!("cargo:rustc-link-lib=dylib=pthread");
    }

    let out_dir = PathBuf::from(env::var("OUT_DIR").expect("OUT_DIR set by cargo"));
    println!("cargo:include={}", openssl_include.display());
    println!("cargo:lib={}", openssl_lib.display());
    println!("cargo:out={}", out_dir.display());
}