drupal_module__munin_api/modules/munin_apc/munin_apc.install

<?php
/**
 * @file
 * Drupal APC instrumentation for Munin: installation.
 *
 * @author Frederic G. MARAND
 *
 * @copyright (c) 2011 Ouest Systèmes Informatiques
 *
 * Licensed under the General Public License version 2 or later.
 */

/**
 * Implements hook_enable().
 */
function munin_apc_enable() {
  variable_set('menu_rebuild_needed', TRUE);
}

/**
 * Implements hook_disable().
 */
function munin_apc_disable() {
  variable_set('menu_rebuild_needed', TRUE);
}