Poq-sys crate and build script.

This commit is contained in:
Alejandro Cabeza Romero 2026-04-27 15:21:32 +02:00
parent 418e8b9b70
commit cb0e660e16
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7 changed files with 536 additions and 5 deletions

428
rust/Cargo.lock generated
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@ -2,20 +2,201 @@
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@ -6,18 +6,23 @@ keywords = ["blockchain", "privacy"]
license = "MIT or Apache-2.0"
readme = "README.md"
repository = "https://github.com/logos-blockchain/logos-blockchain-circuits"
version = "0.1.0"
version = "0.4.2"
[workspace]
members = [
"logos-blockchain-circuits-poq-sys",
"logos-blockchain-circuits-types"
]
resolver = "3"
[workspace.dependencies]
# Internal
lbc-types = { path = "logos-blockchain-circuits-types" }
lbc-poq-sys = { default-features = false, package = "logos-blockchain-circuits-poq-sys", path = "./logos-blockchain-circuits-poq-sys" }
lbc-types = { default-features = false, package = "logos-blockchain-circuits-types", path = "./logos-blockchain-circuits-types" }
# External
flate2 = "1"
libc = "0.2.185"
tar = "0.4"
thiserror = "2.0.18"
ureq = "3.3.0"

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@ -0,0 +1,18 @@
[package]
name = "logos-blockchain-circuits-poq-sys"
categories.workspace = true
description.workspace = true
edition.workspace = true
keywords.workspace = true
license.workspace = true
readme.workspace = true
repository.workspace = true
version.workspace = true
[dependencies]
lbc-types = { workspace = true}
[build-dependencies]
flate2 = { workspace = true }
tar = { workspace = true }
ureq = { workspace = true }

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@ -0,0 +1,75 @@
use std::path::{Path, PathBuf};
use ureq::Body;
use ureq::http::Response;
static CIRCUIT_NAME: &str = "poq";
static LIB_VAR_NAME: &str = "POQ_LIB_DIR";
fn get_artifact_name(version: &str, os: &str, arch: &str) -> String {
format!("logos-blockchain-circuits-v{version}-{os}-{arch}")
}
fn get_artifact_url(version: &str, os: &str, arch: &str) -> String {
let artifact = get_artifact_name(version, os, arch);
let artifact_tar_gz = format!("{artifact}.tar.gz");
format!(
"https://github.com/logos-blockchain/logos-blockchain-circuits/releases/download/v{version}/{artifact_tar_gz}"
)
}
fn fetch_library(version: &str, os: &str, arch: &str) -> Response<Body> {
let url = get_artifact_url(version, os, arch);
ureq::get(&url).call().unwrap_or_else(|error| {
panic!(
"Failed to download a prebuilt library for {os}-{arch} v{version}: {error}. \
Set {LIB_VAR_NAME} to point to a local build instead."
)
})
}
fn unpack_library(response: Response<Body>, version: &str, os: &str, arch: &str, output_dir: &Path) -> PathBuf {
let gz_decoder = flate2::read::GzDecoder::new(response.into_body().into_reader());
let mut archive = tar::Archive::new(gz_decoder);
archive.unpack(output_dir).expect("Failed to unpack the downloaded archive.");
let unpacked_artifact_path = output_dir.join(get_artifact_name(version, os, arch));
let unpacked_library_directory = unpacked_artifact_path.join(CIRCUIT_NAME);
assert!(unpacked_library_directory.exists(), "Expected the unpacked library at {}.", unpacked_library_directory.display());
unpacked_library_directory
}
fn provision_library() -> PathBuf {
let version = env!("CARGO_PKG_VERSION");
let os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
let arch = std::env::var("CARGO_CFG_TARGET_ARCH").unwrap();
let out_dir = PathBuf::from(std::env::var("OUT_DIR").unwrap());
let expected_library_directory = out_dir.join(get_artifact_name(version, &os, &arch)).join(CIRCUIT_NAME);
if expected_library_directory.exists() {
println!("Found an existing library at {}. Reusing it.", expected_library_directory.display());
return expected_library_directory;
}
let response = fetch_library(version, &os, &arch);
unpack_library(response, version, &os, &arch, &out_dir)
}
fn main() {
println!("cargo:rerun-if-env-changed={LIB_VAR_NAME}");
let lib_dir = std::env::var(LIB_VAR_NAME).map(
|lib_dir| {
println!("Using a library directory from {LIB_VAR_NAME}: {lib_dir}");
let lib_dir_path = PathBuf::from(lib_dir);
assert!(lib_dir_path.exists(), "The library directory at {} does not exist.", lib_dir_path.display());
lib_dir_path
}
).unwrap_or_else(|_| {
provision_library()
});
let lib_dir = lib_dir.to_str().expect("Failed to convert the library directory path to a string");
println!("cargo:rustc-link-search=native={lib_dir}");
println!("cargo:rustc-link-lib=static={CIRCUIT_NAME}");
}

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@ -0,0 +1 @@
pub mod ffi;

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@ -1,7 +1,13 @@
[package]
name = "logos-blockchain-circuits-types"
version = "0.1.0"
edition = "2024"
categories.workspace = true
description.workspace = true
edition.workspace = true
keywords.workspace = true
license.workspace = true
readme.workspace = true
repository.workspace = true
version.workspace = true
[dependencies]
libc = { workspace = true }