build.rs

use std::env;
use time::{format_description, OffsetDateTime};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let format = format_description::parse("[year repr:last_two][month][day][hour][minute]")?;
    let dt = OffsetDateTime::now_utc().format(&format)?;
    println!("cargo:rustc-env=PACKAGE_COMPILE_TIME={}", dt);

    println!("cargo:rerun-if-changed=proto");
    println!("cargo:rerun-if-changed=src/keccakf1600_x86-64.s");
    tonic_build::configure()
        .build_server(false)
        // .type_attribute(".", "#[derive(Debug)]")
        .compile(
            &["proto/rpc.proto", "proto/p2p.proto", "proto/messages.proto"],
            &["proto"],
        )?;
    let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
    let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
    if target_arch == "x86_64" && target_os != "windows" && target_os != "macos" {
        cc::Build::new().flag("-c").file("src/keccakf1600_x86-64.s").compile("libkeccak.a");
    }
    if target_arch == "x86_64" && target_os == "macos" {
        cc::Build::new().flag("-c").file("src/keccakf1600_x86-64-osx.s").compile("libkeccak.a");
    }
    Ok(())
}