Rust - Problem compiling mongodb drivers with MinGW and MSYS2 on Windows 10

help
1

Hi everyone

I'm compiling a project that uses mongodb driver. Now the program is not compiling because among the package dependencies one needs the reference to two libraries ring_core_0_17_8_fiat_curve25519_adx_mul and the other ring_core_0_17_8_fiat_curve25519_adx_square. This is being compiled on Windows 10 using gcc/x86_64-w64-mingw32/14.2.0 from MSYS2.

task_process.rs

mod queues_mongo;

use queues_mongo::email_queue::search_queue;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
  let _ = search_queue().await;

  Ok(())
}

email_queue.rs

extern crate dotenv;

use dotenv::dotenv;
use std::env;

use mongodb::{
  bson::{doc, Document},
  error, Client, Collection, Database,
};

#[allow(dead_code)]
pub async fn search_queue() -> error::Result<()> {
  dotenv().ok();

  let uri: String = env::var("MONGO_URI").expect("MONGO_URI");
  let db: String = env::var("MONGO_DATABASE").expect("MONGO_DATABASE");

  let client: Client = Client::with_uri_str(uri).await?;
  let database: Database = client.database(db.as_str());
  let collection: Collection = database.collection("emails");
  let email: Option = collection.find_one(doc! { "status": "Sent" }).await?;

  println!("Found a email:\n{:#?}", email);

  Ok(())
}

Full error

The Cargo.toml:

[package]
name = "rustlang-course"
version = "0.1.0"
edition = "2021"

[dependencies]
aead = "0.5.2"
axum = "0.8.1"
base64 = "0.22.1"
bson = "2.13.0"
chrono = "0.4.39"
colored = "2.1.0"
csv = "1.3.1"
dotenv = "0.15.0"
futures = "0.3.31"
hex = "0.4.3"
mongodb = "3.1.1"
notify = "7.0.0"
notify-debouncer-full = "0.4.0"
notify-debouncer-mini = "0.5.0"
openssl = "0.10.68"
prost = "0.13.3"
rand = "0.8.5"
regex = "1.11.1"
reqwest = { version = "0.12.9", features = ["json"] }
roxmltree = "0.20.0"
serde = "1.0.214"
serde_json = "1.0.133"
sqlx = "0.8.2"
tokio = { version = "1.41.0", features = ["full"] }
tonic = "0.12.3"
uuid = "1.11.0"

[build-dependencies]
cc = "1.2.7"
tonic-build = "0.12.3"

[[bin]]
name = "task_process"
path = "src/task_process.rs"
2

according to the source code, these two functions are implemented in assembly:

maybe it's because your build environment has unusual configurations, or maybe the build script wrongly detected the envirnonment. anyway, you should report to the ring issue tracker.

3

I've been working on it these last few days and found a solution:

  1. Clone the project or copy it to "C:\msys64\home\my_user" in MSYS2, don't do this in the Windows user folder "C:\Users\My User" because the Rust compiler will have problems with the dependencies.

  2. Precompile the libraries "ring_core_0_17_8_fiat_curve25519_adx_mul" and the library "ring_core_0_17_8_fiat_curve25519_adx_square" using the "build.rs".

Example:

fn main() -> Result<(), Box<dyn std::error::Error>> {
  let build_lib_path: &str =
	r"C:\msys64\home\My User\projects\rustlang-course\target\debug\build_lib";

  let includes: [&str; 2] = [
	r"C:\Users\My User\.cargo\registry\src\index.crates.io-6f17d22bba15001f\ring-0.17.8\pregenerated\tmp",
	r"C:\Users\My User\.cargo\registry\src\index.crates.io-6f17d22bba15001f\ring-0.17.8\include",
  ];

  cc::Build::new()
	.file(r"C:\Users\My User\.cargo\registry\src\index.crates.io-6f17d22bba15001f\ring-0.17.8\third_party\fiat\asm\fiat_curve25519_adx_mul.S")
	.includes(&includes)
	.out_dir(&build_lib_path)
	.compile("ring_core_0_17_8_fiat_curve25519_adx_mul");

  cc::Build::new()
	.file(r"C:\Users\My User\.cargo\registry\src\index.crates.io-6f17d22bba15001f\ring-0.17.8\third_party\fiat\asm\fiat_curve25519_adx_square.S")
	.includes(&includes)
	.out_dir(&build_lib_path)
	.compile("ring_core_0_17_8_fiat_curve25519_adx_square");

  println!("cargo::rustc-link-lib=static=ring_core_0_17_8_fiat_curve25519_adx_mul");
  println!("cargo::rustc-link-lib=static=ring_core_0_17_8_fiat_curve25519_adx_square");
  println!("cargo::rustc-link-search=native={}", build_lib_path);

  Ok(())
}

You also have to make this adjustment in "C:\Users\My User.cargo\config.toml"

[target.x86_64-unknown-linux-gnu]
rustflags = ["-C", "linker=clang", "-C", "link-arg=-fuse-ld=lld"]
linker = "C:\\msys64\\ucrt64\\bin\\clang.exe"
ar = "C:\\msys64\\ucrt64\\bin\\ar.exe"

Finally the program ran.