extern crate bindgen;
use std::env;
use std::path::{Path, PathBuf};
use std::process::Command;
fn main() {
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
let go_dir = Path::new("./go");
assert!(env::set_current_dir(&go_dir).is_ok(), "Failed to change directory to ./go");
let mut go_build = Command::new("go");
go_build
.arg("build")
.arg("-buildmode=c-archive")
.arg("-o")
.arg(out_path.join("libgo.a"))
.arg("./main.go");
go_build.status().expect("Go build failed");
let bindings = bindgen::Builder::default()
.header(out_path.join("libgo.h").to_str().unwrap())
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
.generate()
.expect("Unable to generate bindings");
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
println!("cargo:rerun-if-changed=go/lib.go");
println!(
"cargo:rustc-link-search=native={}",
out_path.to_str().unwrap()
);
println!("cargo:rustc-link-lib=static={}", "go");
}