MAKEFLAGS += -j $(shell nproc)

CC = gcc

COMPILER_FLAGS = \
	-std=c23 \
	-Wall -Wextra -Wpedantic -Wconversion \
	-pedantic -pedantic-errors \
	-Wno-unused-function \

LINKER_FLAGS = \
	-pthread

COMPILER_FLAGS += $(shell pkg-config sdl2 --cflags)
LINKER_FLAGS += $(shell pkg-config sdl2 --libs)

FEATURE_FLAGS =
OPTIMIZATION_FLAGS =

# override by 'make RELEASE=1 ...'
RELEASE=0

ifeq ($(RELEASE),1)
	COMPILER_FLAGS += -Werror
	FEATURE_FLAGS += -flto=auto
	OPTIMIZATION_FLAGS += -O3
else
	COMPILER_FLAGS += -g -Wno-unused-variable
	FEATURE_FLAGS += -fsanitize=address,undefined,leak
	OPTIMIZATION_FLAGS += -Og
endif

HEADERS = $(shell find . -name *.h)

VM_SOURCES = $(shell find vm/ -name *.c)
VM_OBJECTS = $(patsubst %.c, build/objects/%.o, $(VM_SOURCES))

ASM_SOURCES = $(shell find asm/ -name *.c)
ASM_OBJECTS = $(patsubst %.c, build/objects/%.o, $(ASM_SOURCES))

all: build/vm build/asm

build/vm: $(VM_OBJECTS)
	@mkdir -p $(dir $@)
	$(CC) $^ -o $@ $(FEATURE_FLAGS) $(OPTIMIZATION_FLAGS) $(LINKER_FLAGS)

build/asm: $(ASM_OBJECTS)
	@mkdir -p $(dir $@)
	$(CC) $^ -o $@ $(FEATURE_FLAGS) $(OPTIMIZATION_FLAGS) $(LINKER_FLAGS)

build/objects/%.o: %.c $(HEADERS)
	@mkdir -p $(dir $@)
	$(CC) $< -c -o $@ $(COMPILER_FLAGS) $(OPTIMIZATION_FLAGS) $(FEATURE_FLAGS)

.PHONY: clean

clean:
	rm -rf build/