Makefile best practices

https://clarkgrubb.com/makefile-style-guide#phony-targets

Makefile

@@ -1,25 +1,29 @@
 REBAR:=$(shell which rebar3 || echo ./rebar3)
 REBAR_URL:="https://s3.amazonaws.com/rebar3/rebar3"
-.PHONY: test
 
 all: clean build
 
 $(REBAR):
 	curl -o rebar3 $(REBAR_URL) && chmod +x rebar3
 
+.PHONY: build
 build: $(REBAR)
 	$(REBAR) compile
 
+.PHONY: release
 release: $(REBAR)
 	$(REBAR) release
 
+.PHONY: fresh
 fresh: $(REBAR)
 	rm -Rf _build
 	$(REBAR) clean
 
+.PHONY: clean
 clean: $(REBAR)
 	$(REBAR) clean
 
+.PHONY: test
 test: $(REBAR)
 	$(REBAR) eunit
 	$(REBAR) dialyzer