extern crate bindgen;
extern crate cmake;

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

fn main() {
    let mut dst = cmake::Config::new("wavm")
        .define("WAVM_ENABLE_STATIC_LINKING", "ON")
        .define("WAVM_ENABLE_FUZZ_TARGETS", "OFF")
        .define("WAVM_ENABLE_UNWIND", "ON")
        .register_dep("LLVM")
        .build_target("libWAVM")
        .build();
    dst.push("build");

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

    let bindings = bindgen::Builder::default()
        .header("src/wrapper.hpp")
        .clang_args(
            [
                "-I",
                "src",
                "-I",
                "wavm/Include",
                "-I",
                &format!("{}/include", dst.display()),
                "-std=c++17",
            ]
            .iter(),
        )
        .whitelist_type("wasm_.*")
        .whitelist_function("wasm_.*")
        .whitelist_function("WAVM::.*")
        .default_enum_style(bindgen::EnumVariation::Rust {
            non_exhaustive: false,
        })
        .enable_cxx_namespaces()
        .raw_line("#[allow(bad_style)]")
        .derive_debug(true)
        .generate()
        .expect("Unable to generate bindings");

    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
    bindings
        .write_to_file(out_dir.join("bindings.rs"))
        .expect("Could not write bindings");
}