CXX			= /usr/bin/g++
CXXFLAGS	= -std=c++20 -MMD -MP -Wall -Wpedantic -Wextra
LDFLAGS		= 
LDLIBS 		= -lserial
IFLAGS      = -Iargparse/include


OBJECT_DIR 	= ../build
EXEC_NAME   = spi-transfer
EXEC 		= ../$(EXEC_NAME)

SRC 		= $(wildcard *.cpp) $(wildcard */*.cpp) 
# OBJECTS 	= $(SRC:%.cpp=$(OBJECT_DIR)/%.o)
OBJECTS 	= $($(notdir SRC):%.cpp=$(OBJECT_DIR)/%.o)
DEPENDS 	= ${OBJECTS:.o=.d}

CXXFLAGS    += $(IFLAGS)


default: $(EXEC)
	echo $(OBJECTS)

.PHONY: release install debug run clean
release: CXXFLAGS += -O3
release : default

# rule for the executable
$(EXEC): $(OBJECT_DIR) $(OBJECTS) 
	$(CXX) $(OBJECTS) -o $@ $(CXXFLAGS) $(LDFLAGS) $(LDLIBS)
# include the makefiles generated by the -M flag
-include $(DEPENDS)

$(OBJECT_DIR)/%.o: %.cpp
	$(CXX) -c $< -o $@ $(CXXFLAGS) $(LDFLAGS) $(LDLIBS)

$(OBJECT_DIR):
	mkdir -p $@

# Extra Options
install:
	install -D -m 751 $(EXEC) $(DESTDIR)/$(EXEC_NAME)


# with debug flags
debug: CXXFLAGS += -g
debug: default

# make with debug flags and run afterwards
run: CXXFLAGS += -g
run: default
	./$(EXEC)

# remove all object and dependecy files
clean:
	-rm -r $(OBJECT_DIR)
	-rm $(EXEC)