glommio 0.9.0

Glommio is a thread-per-core crate that makes writing highly parallel asynchronous applications in a thread-per-core architecture easier for rustaceans.
Documentation 
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use std::{env, fs, path::*, process::Command};

use cc::Build;

fn main() {
    let project = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap())
        .canonicalize()
        .unwrap();

    let liburing = match env::var("GLOMMIO_LIBURING_DIR") {
        Ok(path) => PathBuf::from(path).canonicalize().unwrap(),
        Err(_) => {
            Command::new("git")
                .arg("submodule")
                .arg("update")
                .arg("--init")
                .status()
                .unwrap();

            project.join("liburing")
        }
    };

    // Run the configure script in OUT_DIR to get `compat.h`
    let configured_include = configure(&liburing);

    let src = liburing.join("src");

    // liburing
    Build::new()
        .file(src.join("setup.c"))
        .file(src.join("queue.c"))
        .file(src.join("syscall.c"))
        .file(src.join("register.c"))
        .include(src.join("include"))
        .include(&configured_include)
        .extra_warnings(false)
        .compile("uring");

    // (our additional, linkable C bindings)
    Build::new()
        .file(project.join("rusturing.c"))
        .include(src.join("include"))
        .include(&configured_include)
        .compile("rusturing");
}

fn configure(liburing: &Path) -> PathBuf {
    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap())
        .canonicalize()
        .unwrap();
    fs::copy(liburing.join("configure"), out_dir.join("configure")).unwrap();
    fs::create_dir_all(out_dir.join("src/include/liburing")).unwrap();
    Command::new("./configure")
        .current_dir(&out_dir)
        .output()
        .expect("configure script failed");
    out_dir.join("src/include")
}