启用busybox-1.19.4请修改当前目录Makefile
1.BUSYBOX_SRC=busybox-1.01修改为BUSYBOX_SRC=busybox-1.19.4
2.$(MAKE) -C $(BUSYBOX_SRC) PREFIX=$(BUSYBOX_INSTALL_DIR) install 修改为 $(MAKE) -C $(BUSYBOX_SRC) CONFIG_PREFIX=$(BUSYBOX_INSTALL_DIR) install