CC := clang
YACC := bison
LEX := flex
CFLAGS := -std=c17 -Wpedantic -Wall -Wextra
BISONFLAGS := 
BUILD := ./build
INCLUDE	:= -I./
OBJ_DIR := $(BUILD)/objects
APP_DIR := $(BUILD)/bin
TARGET := day_6

SRC := $(wildcard ./*.cpp) lexer.c parser.c

OBJECTS	:= $(SRC:%.c=$(OBJ_DIR)/%.o)

# targets
all: build $(APP_DIR)/$(TARGET)

run: all
	$(APP_DIR)/$(TARGET)

flex:
	$(LEX) --outfile=lexer.c --header-file=lexer.h lexer.l

bison:
	$(YACC) $(BISONFLAGS) --output=parser.c parser.y

generate: flex bison

$(OBJ_DIR)/%.o: %.c
	@mkdir -p $(@D)
	$(CC) $(CFLAGS) $(INCLUDE) -o $@ -c $<

$(APP_DIR)/$(TARGET): flex bison $(OBJECTS)
	@mkdir -p $(@D)
	$(CC) $(CFLAGS) $(INCLUDE) $(LDFLAGS) -o $(APP_DIR)/$(TARGET) $(OBJECTS)

.PHONY: all build clean debug release

build:
	@mkdir -p $(APP_DIR)
	@mkdir -p $(OBJ_DIR)

debug: CFLAGS += -DDEBUG -g
debug: BISONFLAGS += -Wcounterexamples
debug: all

sanitize: CFLAGS += -DDEBUG -g -fsanitize=address
sanitize: all

release: CFLAGS += -O2
release: all

clean:
	-@rm -rvf $(BUILD)
	-@rm -rvf {lexer.c,parser.c} {lexer.h,parser.h}