CROSS_COMPILE ?= arm-linux-gnueabihf-
CC ?= $(CROSS_COMPILE)gcc
CFLAGS += -DAVB_COMPILATION -O2
DBGFLAGS := -g -DDEBUG=1 -O0
CCOBJFLAGS := $(CFLAGS) -c

BIN_PATH ?= bin
OBJ_PATH ?= obj
SRC_PATH := .
DBG_PATH ?= debug

TARGET_NAME := aml-avb-dm-verity
TARGET := $(BIN_PATH)/$(TARGET_NAME)
TARGET_DEBUG := $(DBG_PATH)/$(TARGET_NAME)

# src files & obj files
SRC := avb_dm_verity.o \
		avb_util.o \
		avb_sysdeps_posix.o \
		avb_footer.o \
		avb_descriptor.o \
		avb_chain_partition_descriptor.o \
		avb_hashtree_descriptor.o

OBJ := $(addprefix $(OBJ_PATH)/, $(addsuffix .o, $(notdir $(basename $(SRC)))))
OBJ_DEBUG := $(addprefix $(DBG_PATH)/, $(addsuffix .o, $(notdir $(basename $(SRC)))))

# clean files list
DISTCLEAN_LIST := $(OBJ) \
                  $(OBJ_DEBUG)
CLEAN_LIST := $(TARGET) \
			  $(TARGET_DEBUG) \
			  $(DISTCLEAN_LIST)

# default rule
default: makedir all

# non-phony targets
$(TARGET): $(OBJ)
	$(CC) $(CFLAGS) -o $@ $(OBJ)

$(OBJ_PATH)/%.o: $(SRC_PATH)/%.c*
	$(CC) $(CCOBJFLAGS) -o $@ $<

$(DBG_PATH)/%.o: $(SRC_PATH)/%.c*
	$(CC) $(CCOBJFLAGS) $(DBGFLAGS) -o $@ $<

$(TARGET_DEBUG): $(OBJ_DEBUG)
	$(CC) $(CFLAGS) $(DBGFLAGS) $(OBJ_DEBUG) -o $@

# phony rules
.PHONY: makedir
makedir:
	@mkdir -p $(BIN_PATH) $(OBJ_PATH) $(DBG_PATH)

.PHONY: all
all: $(TARGET) $(TARGET_DEBUG)

.PHONY: debug
debug: $(TARGET_DEBUG)

.PHONY: clean
clean:
	@echo CLEAN $(CLEAN_LIST)
	@rm -f $(CLEAN_LIST)

.PHONY: distclean
distclean:
	@echo CLEAN $(CLEAN_LIST)
	@rm -f $(DISTCLEAN_LIST)