Function buildFromSource

packages/cli/src/whisper/manager.ts:100–146

(onProgress?: (msg: string) => void)

}

function buildFromSource(onProgress?: (msg: string) => void): WhisperResult {
  // Clean stale builds — if BUILD_DIR exists but has no binary, nuke and re-clone
  if (existsSync(BUILD_DIR) && !findBuiltBinary()) {
    rmSync(BUILD_DIR, { recursive: true, force: true });
  }

  if (!existsSync(BUILD_DIR)) {
    onProgress?.("Downloading whisper.cpp...");
    mkdirSync(join(homedir(), ".cache", "hyperframes", "whisper"), {
      recursive: true,
    });
    execFileSync("git", ["clone", "--depth", "1", WHISPER_REPO, BUILD_DIR], {
      stdio: "ignore",
      timeout: 60_000,
      env: { ...process.env, GIT_TERMINAL_PROMPT: "0" },
    });
  }

  onProgress?.("Building whisper.cpp (this may take a minute)...");
  try {
    execFileSync("cmake", ["-B", "build"], {
      cwd: BUILD_DIR,
      stdio: ["pipe", "pipe", "pipe"],
      timeout: 120_000,
    });
    execFileSync("cmake", ["--build", "build", "--config", "Release", "-j"], {
      cwd: BUILD_DIR,
      stdio: ["pipe", "pipe", "pipe"],
      timeout: 300_000,
    });
  } catch (err: unknown) {
    // Build failed — capture diagnostics, then clean up so next attempt starts fresh
    let detail = "";
    if (err && typeof err === "object" && "stderr" in err) {
      const stderr = String(err.stderr).trim();
      if (stderr) detail = `\n${stderr.slice(-500)}`;
    }
    rmSync(BUILD_DIR, { recursive: true, force: true });
    throw new Error(
      `whisper-cpp build failed. Ensure cmake and a C compiler are installed.${detail}`,
    );
  }

  const result = findBuiltBinary();
  if (!result) throw new Error("Build completed but whisper-cli not found");
  return result;
}

// --- Public API -------------------------------------------------------------