DML_LOG_LEVEL
#if DML_LOG_LEVEL >= DML_LOG_LEVEL_ERROR
#if DML_LOG_LEVEL >= DML_LOG_LEVEL_WARN
#if DML_LOG_LEVEL >= DML_LOG_LEVEL_INFO
#if DML_LOG_LEVEL >= DML_LOG_LEVEL_DEBUG
#if DML_LOG_LEVEL >= DML_LOG_LEVEL_VERBOSE
#ifndef DML_LOG_LEVEL