diff --git a/day12/Makefile b/day12/Makefile
new file mode 100644
index 0000000..7369b47
--- /dev/null
+++ b/day12/Makefile
@@ -0,0 +1,15 @@
+CC=g++
+BIN_NAME=day12
+CCFLAGS=-o $(BIN_NAME) -g -std=c++17
+LDFLAGS=
+
+.PHONY: all, clean
+
+all: $(BIN_NAME)
+
+clean:
+	rm -f $(BIN_NAME)
+
+$(BIN_NAME): day12.cpp
+	$(CC) $(CCFLAGS) $(LDFLAGS) day12.cpp
+