oqs.js/scripts/fetch_and_build_liboqs.js


const { execSync } = require('child_process');
const os = require('os');
const path = require('path');
const fs = require('fs');

const spawnSync = require('child_process').spawnSync;
const LIBOQS_REPO = 'https://github.com/open-quantum-safe/liboqs.git';
const LIBOQS_DIR = path.join(__dirname, '..', 'liboqs_build');
const LIBOQS_STATIC = path.join(LIBOQS_DIR, 'build', 'lib', 'liboqs.a');
const BUILD_DIR = path.join(LIBOQS_DIR, 'build');

function checkBin(bin) {
  const which = spawnSync('which', [bin]);
  return which.status === 0;
}

if (!['darwin', 'linux'].includes(os.platform())) {
  console.error('\n[oqs.js] Error: liboqs build is only supported on macOS or Linux at this time.\n');
  process.exit(1);
}

for (const tool of ['git', 'cmake', 'make']) {
  if (!checkBin(tool)) {
    console.error(`[oqs.js] Error: required command '${tool}' not found in PATH.`);
    process.exit(1);
  }
}

// Early-out if already built
if (fs.existsSync(LIBOQS_STATIC)) {
  console.log('[oqs.js] liboqs already built.');
  process.exit(0);
}

// Clone if not present
if (!fs.existsSync(LIBOQS_DIR)) {
  console.log(`[oqs.js] Cloning liboqs into ${LIBOQS_DIR} ...`);
  execSync(`git clone --depth 1 ${LIBOQS_REPO} "${LIBOQS_DIR}"`, { stdio: 'inherit' });
}

if (!fs.existsSync(BUILD_DIR)) fs.mkdirSync(BUILD_DIR, {recursive: true});

console.log('[oqs.js] Configuring liboqs with CMake ...');
execSync(`cmake -DBUILD_SHARED_LIBS=OFF -DCMAKE_BUILD_TYPE=Release ..`, { cwd: BUILD_DIR, stdio: 'inherit' });

console.log('[oqs.js] Building liboqs (this may take a few minutes) ...');
execSync('make -j' + os.cpus().length, { cwd: BUILD_DIR, stdio: 'inherit' });

if (fs.existsSync(LIBOQS_STATIC)) {
  console.log('[oqs.js] liboqs built successfully.\n');
} else {
  console.error('[oqs.js] ERROR: liboqs.a did not build as expected.\n');
  process.exit(1);
}