uboot顶层Makefile解读 咬牙也要啃下它
uboot顶层Makefiel解读VERSION = 1PATCHLEVEL = 3SUBLEVEL = 4EXTRAVERSION =U_BOOT_VERSION = (VERSION).(VERSION).(VERSION).(PATCHLEVEL).(SUBLEVEL)(SUBLEVEL)(SUBLEVEL)(EXTRAVERSION)VERSION_FILE = $(obj)include/version_autogenerated.h
