CC := gcc
CXX := g++
AR := ar

# CC := arm-aw-linux-gnueabi-gcc
# CXX := arm-aw-linux-gnueabi-g++
# AR := arm-aw-linux-gnueabi-ar

CPP_OBJ_FILES := $(patsubst %.cpp, %.o, $(filter %.cpp, $(SRC_FILES)))
C_OBJ_FILES := $(patsubst %.c, %.o, $(filter %.c, $(SRC_FILES)))
SRC_DIRS := $(dir $(SRC_FILES))
D_FILES := $(CPP_OBJ_FILES:.o=.d)
D_FILES += $(C_OBJ_FILES:.o=.d)

D_FILES_TMP := $(addsuffix .*, $(D_FILES))

CC_FLAGS += $(foreach dir, $(INC_DIRS), -I$(dir))

TARGET_SHARED_LIB := $(addprefix $(TARGET_DIR)/, $(addsuffix .so, $(TARGET_NAME)))
TARGET_STATIC_LIB := $(addprefix $(TARGET_DIR)/, $(addsuffix .a, $(TARGET_NAME)))
TARGET_EXE_FILE   := $(addprefix $(TARGET_DIR)/, $(TARGET_NAME))

TARGET_CLEAN += $(CPP_OBJ_FILES) $(C_OBJ_FILES)

ifeq ($(build-share), t)
	ALL += $(TARGET_SHARED_LIB)
	LD_FLAGS += -shared
	CC_FLAGS += -fPIC
	TARGET_CLEAN += $(TARGET_SHARED_LIB)
endif

ifeq ($(build-static), t)
	ALL += $(TARGET_STATIC_LIB)
	LD_FLAGS +=
	CC_FLAGS +=
	TARGET_CLEAN += $(TARGET_STATIC_LIB)
endif

ifeq ($(build-exe), t)
	ALL += $(TARGET_NAME)
	LD_FLAGS +=
	CC_FLAGS += -Wall -Wno-unknown-pragmas -Wno-format
	TARGET_CLEAN += $(TARGET_EXE_FILE)
endif

all: $(ALL)

$(TARGET_STATIC_LIB) : $(CPP_OBJ_FILES) $(C_OBJ_FILES)
	$(AR) cr $(LD_FLAGS) -o $@ $^

$(TARGET_SHARED_LIB) : $(CPP_OBJ_FILES) $(C_OBJ_FILES)
	$(CXX) $(LD_FLAGS) -o $@ $^

$(TARGET_NAME) : $(CPP_OBJ_FILES) $(C_OBJ_FILES)
	$(CXX) $(LD_FLAGS) -o $(TARGET_DIR)/$@ $^

%.o : %.cpp
	$(CXX) $(CC_FLAGS) -c -o $@ $<

%.o : %.c
	$(CC) $(CC_FLAGS) -c -o $@ $<

%.d : %.cpp
	@set -e; \
	$(CXX) -MM $(CC_FLAGS) $< > $@.$$$$; \
	sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
	rm -f $@.$$$$

%.d : %.c
	@set -e; \
	$(CXX) -MM $(CC_FLAGS) $< > $@.$$$$; \
	sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
	rm -f $@.$$$$

-include $(D_FILES)

# debug
# $(info "TARGET_CLEAN:" $(TARGET_CLEAN))