Hermes bindgen

build.rs

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

fn main() {
    let hermes_src_dir = "./hermes";
    let hermes_build_dir = "./release_debug";

    // Tell cargo to invalidate the built crate whenever the wrapper changes
    println!("cargo:rerun-if-changed=wrapper.h");

    // Add include paths
    let bindings = bindgen::Builder::default()
        .header("wrapper.h")
        .clang_arg(format!("-I{}/API/hermes_abi", hermes_src_dir))
        .layout_tests(false)
        .generate()
        .expect("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("Couldn't write bindings!");

    // Add link paths and libraries
    println!("cargo:rustc-link-search=native={}/API/hermes_abi", hermes_build_dir);
    println!("cargo:rustc-link-lib=dylib=hermesabi");
}

wrapper.h

#include <hermes_abi.h>
#include <hermes_vtable.h>