use std::env;
use std::process::Command;

fn main() {
    let work_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
    let out_dir = env::var("OUT_DIR").unwrap();
    eprintln!("out_dir: {}",out_dir);

    #[cfg(not(feature="family-selected"))]
        let platform_subdir = "cmsis_freertos_stm32f4";

    #[cfg(feature = "stm32f3x")]
        let platform_subdir = "cmsis_freertos_stm32f3";
    #[cfg(feature = "stm32f4x")]
        let platform_subdir = "cmsis_freertos_stm32f4";
    #[cfg(feature = "stm32f7x")]
        let platform_subdir = "cmsis_freertos_stm32f7";
    #[cfg(feature = "stm32h7x")]
        let platform_subdir = "cmsis_freertos_stm32h7";

    let platform_dir = format!("{}/platforms/{}", work_dir, platform_subdir);
    eprintln!("platform_dir: {}",platform_dir);

    // force a rebuild on change
    println!("cargo:rerun-if-changed={}",platform_dir);

    #[cfg(not(feature="dbgsym"))]
    let (debug_flag, opt_flag) = ("DEBUG=0", "OPT=-O1");

    #[cfg(feature="dbgsym")]
    let (debug_flag, opt_flag) = ("DEBUG=1", "OPT=-Og");

    let lib_out_dir = format!("{}/freertos_build",out_dir);
    let build_dir = format!("BUILD_DIR={}",lib_out_dir);

    Command::new("make")
        .current_dir(platform_dir.clone())
        .arg(debug_flag)
        .arg(opt_flag)
        .arg(build_dir)
        .output()
         .expect("make failed ");


    // static library should now be in the build directory of the specific platform
    // println!("cargo:rustc-link-search={}/build/", platform_dir.clone());
    println!("cargo:rustc-link-search={}", lib_out_dir.clone());
    // link the generated library
    println!("cargo:rustc-link-lib=cmsis_rtos2");

}