Add/update makefiles

Signed-off-by: Alek Ratzloff <alekr@jsausa.com>

day01/Makefile

@@ -0,0 +1,11 @@
+TARGET=Day01
+
+.PHONY: all
+all: $(TARGET)
+
+$(TARGET): Day01.rs
+	rustc $<
+
+.PHONY: clean
+clean:
+	rm $(TARGET) -f

day02/Makefile

@@ -0,0 +1,15 @@
+TARGET=Day02
+
+.PHONY: all
+all: $(TARGET)
+
+.PHONY: run
+run: $(TARGET)
+	./$(TARGET)
+
+$(TARGET): Day02.rs
+	rustc $<
+
+.PHONY: clean
+clean:
+	rm $(TARGET) -f

day03/Makefile

@@ -6,8 +6,8 @@ all: $(TARGET)
 run: $(TARGET)
 	./$(TARGET)
 
-$(TARGET): $(TARGET).hs
+$(TARGET): $(TARGET).rs
-	ghc -W $<
+	rustc $< -g -O
 
 .PHONY: clean
 clean:

day04/Makefile

@@ -0,0 +1,14 @@
+TARGET=Day04
+
+all: $(TARGET)
+
+.PHONY: run
+run: $(TARGET)
+	./$(TARGET)
+
+$(TARGET): $(TARGET).rs
+	rustc $< -g
+
+.PHONY: clean
+clean:
+	rm $(TARGET)