How to give path to carla server if build from source about carla HOT 7 OPEN

Args:
    town: The `CARLA` town identifier.
    fps: The frequency (in Hz) of the simulation.
    server_timestop: The time interval between spawing the server
    and resuming program.
    client_timeout: The time interval before stopping
    the search for the carla server.
    num_max_restarts: Number of attempts to connect to the server.

Returns:
    client: The `CARLA` client.
    world: The `CARLA` world.
    frame: The synchronous simulation time step ID.
    server: The `CARLA` server.
"""
assert town in ("Town01", "Town02", "Town03", "Town04", "Town05")

# The attempts counter.
attempts = 0

while attempts < num_max_restarts:
    logging.debug("{} out of {} attempts to setup the CARLA simulator".format(
        attempts + 1, num_max_restarts))

    # Random assignment of port.
    port = np.random.randint(2000, 3000)

    # Start CARLA server.
    env = os.environ.copy()
    env["SDL_VIDEODRIVER"] = "offscreen"
    env["SDL_HINT_CUDA_DEVICE"] = "0"
    logging.debug("Inits a CARLA server at port={}".format(port))
    server = subprocess.Popen(f'DISPLAY= ' + str(os.path.join(os.environ.get("CARLA_ROOT"), "CarlaUE4.sh")) + f' -opengl '+ f' -carla-rpc-port={port}' + f" -quality-level=Epic ", stdout=None, stderr=subprocess.STDOUT, preexec_fn=os.setsid, env=env, shell=True)
    atexit.register(os.killpg, server.pid, signal.SIGKILL)
    time.sleep(server_timestop)

    # Connect client.
    logging.debug("Connects a CARLA client at port={}".format(port))
    try:
        client = carla.Client("localhost", port)  # pylint: disable=no-member
        client.set_timeout(client_timeout)
        client.load_world(map_name=town)
        world = client.get_world()
        world.set_weather(carla.WeatherParameters.ClearNoon)  # pylint: disable=no-member
        frame = world.apply_settings(
            carla.WorldSettings(  # pylint: disable=no-member
                synchronous_mode=True,
                fixed_delta_seconds=1.0 / fps,
            ))
        logging.debug("Server version: {}".format(client.get_server_version()))
        logging.debug("Client version: {}".format(client.get_client_version()))
        return client, world, frame, server
    except RuntimeError as msg:
        logging.debug(msg)
        attempts += 1
        logging.debug("Stopping CARLA server at port={}".format(port))
        os.killpg(server.pid, signal.SIGKILL)
        atexit.unregister(lambda: os.killpg(server.pid, signal.SIGKILL))

logging.debug(
    "Failed to connect to CARLA after {} attempts".format(num_max_restarts))
sys.exit()