ALGO_NAME := XTEA
# comment out the following line for removement of XTEA from the build process
-BLOCK_CIPHERS := $(BLOCK_CIPHERS) $(ALGO_NAME)
+BLOCK_CIPHERS += $(ALGO_NAME)
$(ALGO_NAME)_OBJ := xtea-asm.o
$(ALGO_NAME)_TEST_BIN := main.o debug.o uart.o serial-tools.o sha256-asm.o \