- mkdir -p $(KDIR_TMP)/sysupgrade-$(1)/
- echo "BOARD=$(1)" > $(KDIR_TMP)/sysupgrade-$(1)/CONTROL
- $(CP) $(2) $(KDIR_TMP)/sysupgrade-$(1)/kernel
- $(CP) $(3) $(KDIR_TMP)/sysupgrade-$(1)/root
- (cd $(KDIR_TMP); $(TAR) cvzf \
- $(call imgname,ubi,$(1))-sysupgrade.tgz sysupgrade-$(1))
+ mkdir -p "$(KDIR_TMP)/sysupgrade-$(1)/"
+ echo "BOARD=$(1)" > "$(KDIR_TMP)/sysupgrade-$(1)/CONTROL"
+ [ -z "$(2)" ] || $(CP) "$(KDIR)/root.$(2)" "$(KDIR_TMP)/sysupgrade-$(1)/root"
+ [ -z "$(3)" ] || $(CP) "$(3)" "$(KDIR_TMP)/sysupgrade-$(1)/kernel"
+ (cd "$(KDIR_TMP)"; $(TAR) cvf \
+ "$(BIN_DIR)/$(IMG_PREFIX)-$(1)-$(2)-sysupgrade.tar" sysupgrade-$(1))