fn main() {
    println!("cargo:rerun-if-changed=build.rs");

    #[cfg(feature = "opengl")]
    {
        use gl_generator::{Api, Fallbacks, Profile, Registry};
        use std::env;
        use std::fs::File;
        use std::path::PathBuf;

        let dest = PathBuf::from(&env::var("OUT_DIR").unwrap());
        let target = env::var("TARGET").unwrap();
        if !target.contains("macos") {
            let mut file = File::create(&dest.join("egl_bindings.rs")).unwrap();
            let reg = Registry::new(
                Api::Egl,
                (1, 5),
                Profile::Core,
                Fallbacks::All,
                [
                    "EGL_KHR_create_context",
                    "EGL_EXT_create_context_robustness",
                    "EGL_KHR_create_context_no_error",
                    "EGL_KHR_platform_x11",
                    "EGL_KHR_platform_android",
                    "EGL_KHR_platform_wayland",
                    "EGL_KHR_platform_gbm",
                    "EGL_EXT_platform_base",
                    "EGL_EXT_platform_x11",
                    "EGL_MESA_platform_gbm",
                    "EGL_EXT_platform_wayland",
                    "EGL_EXT_platform_device",
                    "EGL_KHR_swap_buffers_with_damage",
                ],
            );

            if target.contains("android") || target.contains("ios") {
                reg.write_bindings(gl_generator::StaticStructGenerator, &mut file)
            } else {
                reg.write_bindings(gl_generator::StructGenerator, &mut file)
            }
            .unwrap()
        }

        if target.contains("windows") {
            let mut file = File::create(&dest.join("wgl_bindings.rs")).unwrap();
            let reg = Registry::new(Api::Wgl, (1, 0), Profile::Core, Fallbacks::All, []);

            reg.write_bindings(gl_generator::StructGenerator, &mut file)
                .unwrap()
        }
    }
}