-XBT_LOG_NEW_CATEGORY(xbt, "All XBT categories (simgrid toolbox)");
-XBT_LOG_NEW_CATEGORY(surf, "All SURF categories");
-XBT_LOG_NEW_CATEGORY(msg, "All MSG categories");
-XBT_LOG_NEW_CATEGORY(simix, "All SIMIX categories");
-XBT_LOG_NEW_CATEGORY(mc, "All MC categories");
-XBT_LOG_NEW_CATEGORY(bindings, "All bindings categories");
-