Makefile

[詳解]

# **************************************************************************** #
#                                                                              #
#                                                         :::      ::::::::    #
#    Makefile                                           :+:      :+:    :+:    #
#                                                     +:+ +:+         +:+      #
#    By: kamitsui <kamitsui@student.42tokyo.jp>     +#+  +:+       +#+         #
#                                                 +#+#+#+#+#+   +#+            #
#    Created: 2025/05/20 16:30:43 by kamitsui          #+#    #+#              #
#    Updated: 2025/06/03 01:45:28 by kamitsui         ###   ########.fr        #
#                                                                              #
# **************************************************************************** #
 
#******************************************************************************#
# @file ex01/Makefile                                                          #
# @brief Makefile for C++ Module 04 Exercise 00.                               #
#                                                                              #
# This Makefile automates the compilation and linking process for the          #
# Animal, Dog, Cat, WrongAnimal, and WrongCat classes, along with the main     #
# test program. It provides standard targets for building, cleaning, and       #
# recompiling the project.                                                     #
#                                                                              #
# Targets:                                                                     #
# all: Builds the main executable.                                             #
# clean: Removes all object files (.o).                                        #
# fclean: Removes all object files and the executable.                         #
# re: Cleans the project and then rebuilds it.                                 #
#******************************************************************************#
 
# Directories
OBJ_DIR = objs
DEP_DIR = .deps
 
# Source files
SRCS = main.cpp Animal.cpp Cat.cpp Dog.cpp \
       WrongAnimal.cpp WrongCat.cpp \
       Brain.cpp
 
# Object files and dependency files
OBJS = $(addprefix $(OBJ_DIR)/, $(SRCS:.cpp=.o))
DEPS = $(addprefix $(DEP_DIR)/, $(SRCS:.cpp=.d))
 
# Build target
NAME = a.out
 
# Compiler
CXX = c++
CXXFLAGS = -Wall -Wextra -Werror -std=c++98
CF_DEP = -MMD -MP -MF $(@:$(OBJ_DIR)/%.o=$(DEP_DIR)/%.d)
 
# Rules for building object files
$(OBJ_DIR)/%.o: %.cpp
    $(CXX) $(CXXFLAGS) $(CF_DEP) -c $< -o $@
 
# Default target
all: directories $(NAME)
.PHONY: all
 
# Make Directories
directories:
    @mkdir -p $(OBJ_DIR)
    @mkdir -p $(DEP_DIR)
.PHONY: directories
 
# Build Target
$(NAME): $(OBJS)
    $(CXX) $(CXXFLAGS) $(OBJS) -o $(NAME)
    $(call ASCII_ART,$(NAME))
 
# REPOSITORY for Test
TEST_ROOT = ../../cpp_module_tester
TEST_DIR = $(TEST_ROOT)/cpp04
URL_TEST_CPP = "https://github.com/kamitsui/cpp_module_tester.git"
TEST_TARGET = $(TEST_DIR)/ex01_app
EX_NUM = ex01
 
# Test
test:
ifeq ($(shell test -d $(TEST_DIR) && echo exist),)
    @echo "Please clone the test repository"
    $(call ASK_AND_EXECUTE_ON_YES, git clone $(URL_TEST_CPP) $(TEST_ROOT))
endif
    $(call ASK_AND_EXECUTE_ON_YES, make -C $(TEST_DIR) $(EX_NUM))
.PHONY: test
 
# Rule for removing object & dependency files
clean:
    rm -rf $(OBJ_DIR) $(DEP_DIR) $(TEST_DIR)/objs $(TEST_DIR)/.deps
.PHONY: clean
 
# Rule for removing Target & others
fclean: clean
    rm -f $(NAME) $(TEST_TARGET)
.PHONY: fclean
 
# Rule for Clean & Build Target
re: fclean all
.PHONY: re
 
# Enable dependency file
-include $(DEPS)
 
# ASCII Art : Display Tips the way to use.
define ASCII_ART
    @echo " _____________________________________________"
    @echo "< Usage :                                     >"
    @echo "<  $$ ./a.out                                  >"
    @echo "<                                             >"
    @echo "< Test Case :                                 >"
    @echo "<  $$ make test                                >"
    @echo "----------------------------------------------"
    @echo "       \   ^__^"
    @echo "        \  (oo)\_______"
    @echo "           (__)\       )\\/\\"
    @echo "               ||----w |"
    @echo "               ||     ||\n"
endef
 
# Ask and Exit on No
define ASK_AND_EXECUTE_ON_YES
    @echo "Execute? $(1) (y/n)"
    @read -r answer; \
    case "$$answer" in \
        [yY]) \
            echo $(1); \
            $(1); \
            ;; \
        *) \
            echo "Skip ..."; \
            ;; \
    esac
endef
 
# Makefile Option : Disable '--print-directory'
MAKEFLAGS += --no-print-directory