#
# Makefile
#

# targets and objects
TARGETS 	:= eeprom ltc
COMMON_OBJS	:= ioutils.o i2c.o strnum.o
OBJS		:= ltc.o eeprom.o $(COMMON_OBJS)
HEADERS 	:=

# ids
KERNEL_ID	:= $(shell uname -s)
MACHINE_ID	:= $(shell uname -m)
ARCH_ID 	:= $(KERNEL_ID)-$(MACHINE_ID)

# directories
ifndef SOURCE_DIR
SOURCE_DIR	:= $(PWD)
endif
BUILD_ROOT	:= $(SOURCE_DIR)/build
BUILD_DIR	:= $(BUILD_ROOT)/$(ARCH_ID)

# compiler and linker flags
CFLAGS		:= -g -Wall -DOS_LINUX -I$(SOURCE_DIR)
LDFLAGS 	:= -g
LIBRARIES	:= -lpsi -lm



all: $(BUILD_DIR) build-all

clean:
	-@cd $(BUILD_DIR); \
	  rm -f *.o $(TARGETS)

distclean:
	-@rm -f *.cache *~
	-@rm -rf $(BUILD_ROOT)

$(BUILD_DIR):
	@mkdir -p $(BUILD_DIR)

build-all:
	@$(MAKE) -C $(BUILD_DIR) -f $(SOURCE_DIR)/Makefile \
	         SOURCE_DIR=$(SOURCE_DIR) $(TARGETS)

$(TARGETS): %: %.o $(COMMON_OBJS) $(HEADERS)
	$(CC) $(LDFLAGS) -o $@ $< $(COMMON_OBJS) $(LIBRARIES)

$(OBJS): %.o: $(SOURCE_DIR)/%.c
	$(CC) $(CFLAGS) -c -o $@ $<

.PHONY: all