Define phony targets in situ

Having a list of phonies at the end of the Makefile makes it easy to
miss adding a new phony when a target gets defined. Also, when the list
of targets grows, it's more difficult to manage phonies. We are
defining a target as phony just above the target definition - this keeps
things close.

Author: gerhard

Makefile

@@ -14,9 +14,11 @@ GPG_KEYNAME := $$(awk -F'[<>]' '/<gpg.keyname>/ { print $$3 }' pom.xml)
 ### TARGETS ###
 #
 
+.PHONY: binary
 binary: clean ## Build the binary distribution
 	@mvnw package -P assemblies -Dgpg.skip=true -Dmaven.test.skip
 
+.PHONY: native-image
 native-image: clean ## Build the native image
 	@mvnw -q package -DskipTests -P native-image -P '!java-packaging'
 	native-image -jar target/perf-test.jar -H:Features="com.rabbitmq.perf.NativeImageFeature"
@@ -28,33 +30,40 @@ docker-image:
 	docker build --build-arg perf_test_distribution=rabbitmq-perf-test-$(RELEASE_VERSION) -t pivotalrabbitmq/perf-test:$(RELEASE_VERSION) -t pivotalrabbitmq/perf-test:latest .
 	rm -rf rabbitmq-perf-test-$(RELEASE_VERSION)*
 
+.PHONY: package-native-image
 package-native-image: native-image ## Package the native image
 	cp perf-test target/perf-test_$(OS)_$(HARDWARE)
 	@mvnw -q checksum:files -P native-image
 	gpg --armor --local-user $(GPG_KEYNAME) --detach-sign target/perf-test_$(OS)_$(HARDWARE)
 
+.PHONY: help
 help:
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
+.PHONY: clean
 clean: 	## Clean all build artefacts
 	@mvnw clean
 
+.PHONY: compile
 compile: ## Compile the source code
 	@mvnw compile
 
+.PHONY: install
 install: clean ## Create and copy the binaries into the local Maven repository
 	@mvnw install -Dmaven.test.skip
 
+.PHONY: jar
 jar: clean ## Build the JAR file
 	@mvnw package -Dmaven.test.skip
 
+.PHONY: run
 run: compile ## Run PerfTest, pass exec arguments via ARGS, e.g. ARGS="-x 1 -y 1 -r 1"
 	@mvnw exec:java -Dexec.mainClass="com.rabbitmq.perf.PerfTest" -Dexec.args="$(ARGS)"
 
+.PHONY: signed-binary
 signed-binary: clean ## Build a GPG signed binary
 	@mvnw package -P assemblies
 
+.PHONY: doc
 doc: ## Generate PerfTest documentation
 	@mvnw asciidoctor:process-asciidoc
-
-.PHONY: binary help clean compile jar run signed-binary