CROSS_COMPILE ?=

TARGET_FILE ?= dnssd

CC = $(CROSS_COMPILE)gcc

SRC_DIR = src
OBJ_DIR = obj
BIN_DIR = bin

C_SRCS = $(wildcard $(SRC_DIR)/*.c)
C_OBJS = $(patsubst %.c,$(OBJ_DIR)/%.o,$(notdir $(C_SRCS)))

OBJS = $(C_OBJS)

TARGET = $(BIN_DIR)/$(TARGET_FILE)

.PHONY: all
all: $(TARGET)

$(TARGET): $(OBJS)
	@mkdir -p $(BIN_DIR)
	$(CC) $(LD_FLAGS) $(OBJS) $(LIBS) -o $@

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
	@mkdir -p $(OBJ_DIR)
	$(call makedep,$<,$@,$(patsubst %c,%d,$(OBJ_DIR)/$(notdir $<)))
	$(CC) -c $(C_FLAGS) $< -o $@

.PHONY: clean
clean:
	rm -rf $(OBJ_DIR) $(BIN_DIR)

define makedep
	$(CC) -MM -MF $3 -MP -MT $2 $4 $1
endef

ifneq ($(MAKECMDGOALS),clean)
-include $($(subst .o,.d,$(OBJS)))
endif