build.rs

extern crate bindgen;

use std::process::Command;
use std::fs;
use std::env;
use std::path::PathBuf;

fn main() {
    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());

    Command::new("python")
        .current_dir("pugl")
        .env("CFLAGS", "-fPIC")
        .arg("-B")
        .arg("waf")
        .arg("configure")
        .arg(format!("--out={}", out_path.to_str().unwrap()))
        .status()
        .expect("waf configure failed");

    Command::new("python")
        .current_dir("pugl")
        .env("CFLAGS", "-fPIC")
        .arg("-B")
        .arg("waf")
        .arg("build")
        .status()
        .expect("waf build failed");

    println!("cargo:rustc-link-search=native={}", out_path.to_str().unwrap());
    println!("cargo:rustc-link-lib=static=pugl_x11-0");
    println!("cargo:rustc-link-lib=static=pugl_x11_cairo-0");
    println!("cargo:rustc-flags=-l cairo -l GLU -l GL -lX11 -lXext -lXrandr -lXcursor");

    // The bindgen::Builder is the main entry point
    // to bindgen, and lets you build up options for
    // the resulting bindings.
    let bindings = bindgen::Builder::default()
        .header("pugl/include/pugl/pugl.h")
        .header("pugl/include/pugl/cairo.h")
        .blacklist_function("pugl.*")
        .layout_tests(false)
        .clang_arg("-Ipugl/include")
        .parse_callbacks(Box::new(bindgen::CargoCallbacks))
        .generate()
        .expect("Unable to generate bindings")
        .to_string();

    let mut bindings_string ="#[cfg(test)] use mockall::automock;\n"
        .to_owned();
    bindings_string.push_str("#[cfg_attr(test, automock)]\npub(crate) mod pffi {\nuse super::*;\n");
    bindings_string.push_str(&bindgen::Builder::default()
                             .header("pugl/include/pugl/pugl.h")
                             .header("pugl/include/pugl/stub.h")
                             .header("pugl/include/pugl/cairo.h")
                             .blacklist_type(".*")
                             .whitelist_function("pugl.*")
                             .layout_tests(false)
                             .clang_arg("-Ipugl/include")
                             .parse_callbacks(Box::new(bindgen::CargoCallbacks))
                             .generate()
                             .expect("Unable to generate bindings")
                             .to_string());
    bindings_string.push_str("}\n");
    bindings_string.push_str(&bindings);

    let bindgen_path = out_path.join("bindings.rs");
    fs::write(bindgen_path, bindings_string.as_bytes())
        .expect("Couldn't write bindings!");

    // FIXME: do this properly
    let _ = fs::remove_file("pugl/.lock-waf_linux_build");
    let _ = fs::remove_file("pugl/.lock-waf_linux2_build");
}