1.It make sense to let Toolchain.defs give the default value 2.The board can still change if the default isn't suitable 3.Avoid the same definition spread more than 200 Make.defs Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> Change-Id: Ic2649f1c7689bcf59c105ca8db61cad45b6e0e64
README ====== This README discusses issues unique to NuttX configurations for the STMicro STM32F411E-Discovery board. See http://www.st.com/content/ccc/resource/technical/document/user_manual/e9/d2/00/5e/15/46/44/0e/DM00148985.pdf/files/DM00148985.pdf/jcr:content/translations/en.DM00148985.pdf