Add Makefile

Makefile

@@ -0,0 +1,48 @@
+AS       := as
+LD       := ld
+ASFLAGS  := --64
+
+EXAMPLES := exit hello-world fizzbuzz
+BINARIES := $(addprefix bin/,$(EXAMPLES))
+
+.PHONY: build help run clean
+
+## Build all binaries (default target)
+build: $(BINARIES)
+
+## Display this help screen
+help:
+	@awk ' \
+		/^##/ { doc = substr($$0, 4); next } \
+		/^[a-zA-Z0-9_-]+:/ && doc { \
+			split($$1, target, ":"); \
+			printf "\033[36m%-20s\033[0m %s\n", target[1], doc; \
+			doc = "" \
+		} \
+	' $(MAKEFILE_LIST)
+
+## Build the exit example
+bin/exit: exit/exit.s
+	$(AS) $(ASFLAGS) -o $@.o $<
+	$(LD) -o $@ $@.o
+	rm -f $@.o
+
+## Build the hello-world example
+bin/hello-world: hello-world/hello.s
+	$(AS) $(ASFLAGS) -o $@.o $<
+	$(LD) -o $@ $@.o
+	rm -f $@.o
+
+## Build the fizzbuzz example
+bin/fizzbuzz: fizzbuzz/fizzbuzz.s
+	$(AS) $(ASFLAGS) -o $@.o $<
+	$(LD) -o $@ $@.o
+	rm -f $@.o
+
+## Run the specified CMD example (use CMD="fizzbuzz")
+run: clean bin/$(CMD)
+	./bin/$(CMD)
+
+## Remove build artifacts
+clean:
+	rm -f bin/*