MAKEFILE

PROJ_DIR := $(realpath $(CURDIR)/.)
SOURCE_DIR := $(PROJ_DIR)
BUILD_DIR := $(PROJ_DIR)/Build

# Name of the file
ifdef target_file
	TARGET = $(target_file)
else
	TARGET = ${PROJ_DIR}/YetAnotherChessGame
endif

# Enable Verbose-Mode
ifdef verbose
	VERBOSE = TRUE
else
	VERBOSE = FALSE
endif

# List of directories in project
DIR_LIST = gui helper model model/figures model/moves

SOURCE_DIRS = $(foreach dir, $(DIR_LIST), $(addprefix $(SOURCE_DIR)/, $(dir)))
TARGET_DIRS = $(foreach dir, $(DIR_LIST), $(addprefix $(BUILD_DIR)/, $(dir)))

INCLUDES = $(foreach dir, $(SOURCE_DIRS), $(addprefix -I, $(dir)))

VPATH = $(SOURCE_DIRS)

SOURCES = $(foreach dir, $(SOURCE_DIRS), $(wildcard $(dir)/*.cpp))

OBJECTS := $(subst $(SOURCE_DIR), $(BUILD_DIR), $(SOURCES:.cpp=.o))

DEPS := $(OBJECTS:.o=.d)

CC = g++

ifeq ($(OS),Windows_NT)
    RM = del /F /Q
    RMDIR = -RMDIR /S /Q
    MKDIR = -mkdir
    ERRIGNORE = 2>nul
    SEP=\\
else
    RM = rm -rf
    RMDIR = rm -rf
    MKDIR = mkdir -p
    ERRIGNORE = 2>/dev/null
    SEP=/
endif

# Remove space after separator
PSEP = $(strip $(SEP))

# Hide or not the calls depending of VERBOSE
ifeq ($(VERBOSE),TRUE)
    HIDE =
else
    HIDE = @
endif

# Define the function that will generate each rule
define generateRules
$(1)/%.o: %.cpp
	@echo Building $$@
	$(HIDE)$(CC) -std=c++11 -c $$(INCLUDES) -o $$(subst /,$$(PSEP),$$@) $$(subst /,$$(PSEP),$$<) -MMD
endef

.PHONY: all clean directories

all: directories $(TARGET)

$(TARGET): $(OBJECTS)
	$(HIDE)echo Linking $@
	$(HIDE)$(CC) -std=c++11 $(OBJECTS) -o $(TARGET)

# Include dependencies
-include $(DEPS)

# Generate rules
$(foreach targetdir, $(TARGET_DIRS), $(eval $(call generateRules, $(targetdir))))

directories:
	$(HIDE)$(MKDIR) $(subst /,$(PSEP),$(TARGET_DIRS))

# Remove all objects, dependencies and executable files generated during the build
clean:
	$(HIDE)$(RMDIR) $(subst /,$(PSEP),$(TARGET_DIRS)) $(ERRIGNORE)
	@echo Cleaning done !