// Copyright 2026 Bel Esprit D'Accord Irrevocable Trust (EIN: 42-697643)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// OR
//
// Licensed under the GNU Affero General Public License, Version 3.0
// (the "AGPL"); you may not use this file except in compliance with the AGPL.
// You may obtain a copy of the AGPL at
//
//     https://www.gnu.org/licenses/agpl-3.0.html

fn main() {
    println!("cargo:rerun-if-changed=src/ffi.rs");
    println!("cargo:rerun-if-changed=cxx/engine_bridge.cpp");
    println!("cargo:rerun-if-changed=cxx/engine_bridge.hpp");

    #[cfg(feature = "ffi")]
    {
        cxx_build::bridge("src/ffi.rs")
            .file("cxx/engine_bridge.cpp")
            // In production: add circom generated witness calculator
            // .file("circom_output/ALGORITHM_ENGINE.cpp")
            .flag_if_supported("-std=c++17")
            .flag_if_supported("-O3")
            // Link against Rapidsnark and CUDA for GPU acceleration
            .include("/usr/local/cuda/include")
            .compile("algorithm_engine_ffi");

        println!("cargo:rustc-link-search=native=/usr/local/cuda/lib64");
        println!("cargo:rustc-link-lib=cudart");
        println!("cargo:rustc-link-lib=gmp");
        println!("cargo:rustc-link-lib=rapidsnark");
    }
}