CONFIG_ENV_CFLAGS += \ -mcpu=cortex-m4 -march=armv7-m -mthumb \ -mthumb-interwork -mlittle-endian \ -fno-short-enums \ -DCONFIG_PLATFORM_8711B -DM3 -w \ CONFIG_ENV_CFLAGS += \ -Os \ -DCONFIG_MQTT_TX_MAXLEN=640 \ -DCONFIG_MQTT_RX_MAXLEN=1200 \ CONFIG_external_libs/mbedtls := CONFIG_tests := CROSS_PREFIX := arm-none-eabi-