diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ee63801
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,57 @@
+LDFLAGS="-L/usr/local/opt/flex/lib"
+BUILD_DIR := ./build
+TARGET_DIR := ./target
+
+
+all: test bubble_sort automaton a_pow_b
+
+automaton: $(BUILD_DIR)/ram $(TARGET_DIR)/ram.py
+	$(BUILD_DIR)/ram < src/stack.asm
+	mv machine.py $(TARGET_DIR)/automaton.py
+	echo "\n### automaton.py ###"
+	cat $(TARGET_DIR)/automaton.py
+	echo "### execution ###"
+	python $(TARGET_DIR)/automaton.py
+
+bubble_sort: $(BUILD_DIR)/ram $(TARGET_DIR)/ram.py
+	$(BUILD_DIR)/ram < src/bubble_sort.asm
+	mv machine.py $(TARGET_DIR)/bubble_sort.py
+	echo "\n### machine.py ###"
+	cat $(TARGET_DIR)/bubble_sort.py
+	echo "### execution ###"
+	python $(TARGET_DIR)/bubble_sort.py
+
+a_pow_b: $(BUILD_DIR)/ram $(TARGET_DIR)/ram.py
+	$(BUILD_DIR)/ram < src/a_pow_b.asm
+	mv machine.py $(TARGET_DIR)/a_pow_b.py
+	echo "\n### a_pow_b.py ###"
+	cat $(TARGET_DIR)/a_pow_b.py
+	echo "### execution ###"
+	python $(TARGET_DIR)/a_pow_b.py
+
+test: $(BUILD_DIR)/ram $(TARGET_DIR)/ram.py
+	$(BUILD_DIR)/ram < src/test.asm
+	mv machine.py $(TARGET_DIR)/test.py
+	echo "\n### test.py ###"
+	cat $(TARGET_DIR)/test.py
+	echo "### execution ###"
+	python $(TARGET_DIR)/test.py
+
+$(TARGET_DIR)/ram.py: src/ram.py
+	mkdir -p $(TARGET_DIR)
+	cp $< $@
+
+$(BUILD_DIR)/ram: $(BUILD_DIR)/ram.yy.c $(BUILD_DIR)/ram.tab.c
+	gcc -o $@ $^ -ly -lfl
+
+$(BUILD_DIR)/ram.tab.c: src/ram.y
+	mkdir -p $(BUILD_DIR)
+	bison -d --report=all -o $@ $<
+
+$(BUILD_DIR)/ram.yy.c: src/ram.l
+	mkdir -p $(BUILD_DIR)
+	flex -o $@ $<
+
+clean:
+	rm -rf $(BUILD_DIR)
+	rm -rf $(TARGET_DIR)
diff --git a/src/Makefile b/src/Makefile
deleted file mode 100644
index d49bec6..0000000
--- a/src/Makefile
+++ /dev/null
@@ -1,47 +0,0 @@
-LDFLAGS="-L/usr/local/opt/flex/lib"
-
-
-automaton: ram
-	./ram < stack.asm
-	echo "### machine.py ###"
-	cat machine.py
-	echo "### execution ###"
-	python machine.py
-
-bubble_sort: ram
-	./ram < bubble_sort.asm
-	echo "### machine.py ###"
-	cat machine.py
-	echo "### execution ###"
-	python machine.py
-
-a_pow_b: ram
-	./ram < a_pow_b.asm
-	echo "### machine.py ###"
-	cat machine.py
-	echo "### execution ###"
-	python machine.py
-
-test: ram
-	./ram < test.asm
-	echo "### machine.py ###"
-	cat machine.py
-	echo "### execution ###"
-	python machine.py
-
-ram: ram.yy.c ram.tab.c
-	gcc -o $@ $^ -ly -lfl
-
-ram.tab.c: ram.y
-	bison -d --report=all $^
-
-ram.yy.c: ram.l
-	flex -o $@ $^
-
-clean:
-	rm -f machine.py
-	rm -f ram
-	rm -f *.o
-	rm -f *.output
-	rm -f *.tab.c *.tab.h
-	rm -f *.yy.c