makefile

# c++ --std=c++17 models/weight.cpp mongo_db.cpp file_list.cpp json_parser.cpp weights.cpp main.cpp $(pkg-config --cflags --libs libmongocxx) -o mongo

CC        := g++
LD        := g++

MODULES   := helper parser use_case models mongo_db .
SRC_DIR   := $(MODULES) # $(addprefix src/,$(MODULES))
BUILD_DIR := $(addprefix build/,$(MODULES))

SRC       := $(foreach sdir,$(SRC_DIR),$(wildcard $(sdir)/*.cpp))
OBJ       := $(patsubst %.cpp,build/%.o,$(SRC))
INCLUDES  := $(addprefix -I,$(SRC_DIR))
DEPS      := $(OBJ:.o=.d)

vpath %.cpp $(SRC_DIR)

CFLAGS= -g -Wall --std=c++17 -MMD
MONGOFLAGS=$(shell pkg-config --cflags --libs libmongocxx)


-include $(DEPS)

define make-goal
$1/%.o: %.d
$1/%.o: %.cpp
	$(CC) $(CFLAGS) $(INCLUDES) $(MONGOFLAGS) -c $$< -o $$@
endef

.PHONY: all checkdirs clean

muh:
	@echo "SRC: " $(SRC)
	@echo "OBJ: " $(OBJ)
	@echo "DEP: " $(DEP)
	@echo "BUILD_DIR:" $(BUILD_DIR)


all: checkdirs run

run: $(OBJ)
	$(LD) $^ $(CFLAGS) $(MONGOFLAGS) -pthread -lboost_date_time -o $@

checkdirs: $(BUILD_DIR)

$(BUILD_DIR):
	@mkdir -p $@

clean:
	@rm -rf build/*

rebuild: clean all

$(foreach bdir,$(BUILD_DIR), $(eval $(call make-goal,$(bdir))))


# compiler flags:
#  -g     - this flag adds debugging information to the executable file
#  -Wall  - this flag is used to turn on most compiler warnings

# SRC = mongo_db.cpp use_cases.cpp output.cpp main.cpp
# MODEL_SRC = models/weight.cpp models/session.cpp
# JSON_SRC = file_list.cpp json_parser.cpp
# HELPER_SRC = helper/time_converter.cpp helper/menu.cpp
# 
# helpers_o: $(HELPER_SRC)
# 	$(CC) $(CFLAGS) -c $(HELPER_SRC) 
# 
# models_o: $(MODEL_SRC)
# 	$(CC) $(CFLAGS) -c $(MODEL_SRC) 
# 
# json_o: $(JSON_SRC)
# 	$(CC) $(CFLAGS) -c $(JSON_SRC) 
# 
# USE_CASE_SRC = use_case/session_import.cpp use_case/session_show.cpp use_case/weight_import.cpp
# 
# use_case_o: $(USE_CASE_SRC)
# 	$(CC) $(CFLAGS) $(MONGOFLAGS) -c $(USE_CASE_SRC)
# 
# # The build target 
# TARGET = run
# 
# all: json_o models_o helpers_o use_case_o $(TARGET)
# 
# $(TARGET): $(SRC) models_o json_o use_case_o helpers_o
# 	$(CC) $(SRC) $(CFLAGS) $(MONGOFLAGS) -lboost_date_time *.o -o $(TARGET) 
# 
# clean:
# 	$(RM) $(TARGET) *.o 
# 
# rebuild: clean all