build.rs

extern crate cc;
use std::env;
use std::path::Path;

fn main() {
    let root_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
    let target = env::var("TARGET").unwrap();

    let parts = target.splitn(4, '-').collect::<Vec<_>>();
    let arch = parts[0];

    let hde = match arch {
        "i686" => "hde/hde32.c",
        "x86_64" => "hde/hde64.c",
        _ => panic!("Architecture '{arch}' not supported."),
    };

    let mh_src_dir = Path::new(&root_dir).join("vendor/minhook/src");

    cc::Build::new()
        .file(mh_src_dir.join("buffer.c"))
        .file(mh_src_dir.join("hook.c"))
        .file(mh_src_dir.join("trampoline.c"))
        .file(mh_src_dir.join(hde))
        .compile("libminhook.a");

    println!("cargo:rerun-if-changed=vendor/minhook/src");
    println!("cargo:rustc-link-search=native={}", env::var("OUT_DIR").unwrap());

    #[cfg(feature = "opengl3")]
    {
        use std::fs::File;

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

        let dest = env::var("OUT_DIR").unwrap();
        let mut file = File::create(Path::new(&dest).join("gl_bindings.rs")).unwrap();

        Registry::new(Api::Gl, (3, 3), Profile::Core, Fallbacks::All, [])
            .write_bindings(StructGenerator, &mut file)
            .unwrap();
    }
}