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

fn main() {

    // 读取环境变量 MVCAM_COMMON_RUNENV
    let mut runenv = env::var("MVCAM_COMMON_RUNENV").expect("[ERROR]MVCAM_COMMON_RUNENV not found");
    // runenv 中的\改为/
    runenv = runenv.replace("\\", "/");
    let lib_path = format!("{}{}", runenv, "/Libraries/win64");
    println!("{}", lib_path);

    println!("cargo:rustc-link-search={}", lib_path);
    // println!("cargo:rustc-link-search=D:/Program Files/MVS/Development/Libraries/win64");
    println!("cargo:rustc-link-lib=MvCameraControl");

    // The bindgen::Builder is the main entry point
    // to bindgen, and lets you build up options for
    // the resulting bindings.
    let bindings = bindgen::Builder::default()
        // The input header we would like to generate
        // bindings for.
        .header("wrapper.h")
        // Tell cargo to invalidate the built crate whenever any of the
        // included header files changed.
        .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
        // Finish the builder and generate the bindings.
        .generate()
        // Unwrap the Result and panic on failure.
        .expect("[ERROR]Unable to generate bindings");

    // Write the bindings to the $OUT_DIR/bindings.rs file.
    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
    bindings
        .write_to_file(out_path.join("bindings.rs"))
        .expect("[ERROR]Couldn't write bindings!");
}