1 extern crate cbindgen;

     2 

     3 use cbindgen::Config;

     4 use std::env;

     5 use std::path::PathBuf;

     6 

     7 fn main() {

     8     let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();

     9 

    10     let package_name = env::var("CARGO_PKG_NAME").unwrap();

    11     let output_file = target_dir()

    12         .join(format!("{}.hpp", package_name))

    13         .display()

    14         .to_string();

    15 

    16     let config = Config {

    17         namespace: Some(String::from("hwengine")),

    18         ..Default::default()

    19     };

    20 

    21     cbindgen::generate_with_config(&crate_dir, config)

    22         .unwrap()

    23         .write_to_file(&output_file);

    24 }

    25 

    26 fn target_dir() -> PathBuf {

    27     if let Ok(target) = env::var("CARGO_TARGET_DIR") {

    28         PathBuf::from(target)

    29     } else {

    30         PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap()).join("target")

    31     }

    32 }