constantine/constantine-rust/constantine-sys/build.rs

use std::env;
use std::path::PathBuf;
use std::process::{Command, Stdio};

fn main() {
    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
    let cargo_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
    let root_dir = cargo_dir
        .parent()
        .expect("constantine-sys is nested")
        .parent()
        .expect("constantine-rust is nested");

    // Avoid full recompilation
    println!("cargo:rerun-if-changed=build.rs");
    println!("cargo:rerun-if-changed=Cargo.toml");
    println!("cargo:rerun-if-changed={}", cargo_dir.join(".cargo").join("config.toml").display());
    println!("cargo:rerun-if-changed={}", root_dir.join("Cargo.toml").display());
    println!("cargo:rerun-if-changed={}", root_dir.join("constantine").display());
    println!("cargo:rerun-if-changed={}", root_dir.join("bindings").display());
    println!("cargo:rerun-if-changed={}", root_dir.join("constantine.nimble").display());

    println!("Building Constantine library ...");

    Command::new("nimble")
            .arg("make_lib_rust")
            .current_dir(root_dir)
            .stdout(Stdio::inherit())
            .stderr(Stdio::inherit())
            .status()
            .expect("failed to execute process");

    println!("cargo:rustc-link-search=native={}", out_dir.display());
    println!("cargo:rustc-link-lib=static=constantine");

}