1 files changed, 6 insertions, 3 deletions
diff --git a/Makefile b/Makefile
index e04bc37..d73476d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,14 +1,17 @@
 SRCS = regex/RegexTest.java
 OBJS = $(addprefix bin/,$(SRCS:.java=.class))
 
-$(OBJS): bin/%.class: src/%.java
+classes: $(OBJS)
+
+bin:
+	mkdir -p bin
+
+$(OBJS): bin/%.class: src/%.java bin
 	javac -cp lib/automaton.jar -d bin $<
 
 .PHONY: clean run classes
 clean:
 	$(RM) $(OBJS)
 
-classes: $(OBJS)
-
 run:
 	@java -cp lib/automaton.jar:bin regex.RegexTest