SRC_DIR   ?= src
BUILD_DIR ?= build
SRC_MAIN  ?= $(SRC_DIR)/main.c
EXE_NAME  ?= fbtest
BIN       := $(BUILD_DIR)/$(EXE_NAME)

CC        ?= cc
CFLAGS    := -Wall -Wextra -pedantic

REL_FLAGS := -DNDEBUG -O2
DEB_FLAGS := -DDEBUG -O0 -g

DEBUG ?= 0
ifeq ($(DEBUG), 1)
	CFLAGS += $(DEB_FLAGS)
else ifeq ($(DEBUG), 2)
	CFLAGS += $(DEB_FLAGS) -fsanitize=address
else
	CFLAGS += $(REL_FLAGS)
endif

.PHONY: build run clean

main: $(BIN)

$(BIN): $(SRC_MAIN) $(BUILD_DIR)
	$(CC) $(CFLAGS) -o $(BIN) $(SRC_MAIN)

$(BUILD_DIR):
	mkdir -p $(BUILD_DIR)

run: $(BIN)
	./$(BIN)

clean:
	rm -rf $(BUILD_DIR)