make Adder_config edit config.mk uncomment -DDEBUG fails to resolve measure_gclk Changing cpu/mpc8xx/speed.c #if !defined(CONFIG_8xx_CPUCLK_DEFAULT) || defined(CFG_MEASURE_CPUCLK) to #if !defined(CONFIG_8xx_CPUCLK_DEFAULT) || defined(CFG_MEASURE_CPUCLK)\ || defined(DEBUG) fixes. -- Best regards Bryan