build.rs

use std::env;
use std::fs::File;
use std::path::PathBuf;

use gl_generator::{Api, Fallbacks, Profile, Registry, StructGenerator};

fn main() {
    let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
    let dest = PathBuf::from(&env::var("OUT_DIR").unwrap());

   
    if target_os == "android" || target_os == "linux" {
        #[cfg(feature = "swappy")]
        {
            if cfg!(feature = "shared-stdcxx"){
                _add_lib("c++_shared", false);
            }else{
                _add_lib("c++_static", false);
            }
            println!("cargo:rustc-link-search=native={}", "libs/");
            println!("cargo:rustc-link-lib=static={}", "swappy");
        }

        let mut file = File::create(&dest.join("egl_bindings.rs")).unwrap();
        let registry = Registry::new(Api::Egl, (1, 5), Profile::Core, Fallbacks::All, []);
        registry.write_bindings(StructGenerator, &mut file).unwrap();
    }
}

fn _add_lib(_name: impl AsRef<str>, _static: bool) {
    #[cfg(not(feature = "test"))]
    println!(
        "cargo:rustc-link-lib={}{}",
        if _static { "static=" } else { "" },
        _name.as_ref()
    );
}