Made the applicable targets as PHONY (ansible#27996)

https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html

Makefile

@@ -117,20 +117,26 @@ TARGET ?=
 
 ########################################################
 
+.PHONY: all
 all: clean python
 
+.PHONY: tests
 tests:
 	$(ANSIBLE_TEST) units -v --python $(PYTHON_VERSION) $(TEST_FLAGS)
 
+.PHONY: tests-py3
 tests-py3:
 	$(ANSIBLE_TEST) units -v --python $(PYTHON3_VERSION) $(TEST_FLAGS)
 
+.PHONY: tests-nonet
 tests-nonet:
 	$(ANSIBLE_TEST) units -v --python $(PYTHON_VERSION) $(TEST_FLAGS)  --exclude test/units/modules/network/
 
+.PHONY: integration
 integration:
 	$(ANSIBLE_TEST) integration -v --docker $(IMAGE) $(TARGET) $(TEST_FLAGS)
 
+.PHONY: authors
 authors:
 	sh hacking/authors.sh
 
@@ -144,15 +150,19 @@ authors:
 %.1: %.1.asciidoc VERSION
 	$(ASCII2MAN)
 
+.PHONY: loc
 loc:
 	sloccount lib library bin
 
+.PHONY: pep8
 pep8:
 	$(ANSIBLE_TEST) sanity --test pep8 --python $(PYTHON_VERSION) $(TEST_FLAGS)
 
+.PHONY: pyflakes
 pyflakes:
 	pyflakes lib/ansible/*.py lib/ansible/*/*.py bin/*
 
+.PHONY: clean
 clean:
 	@echo "Cleaning up distutils stuff"
 	rm -rf build
@@ -190,37 +200,45 @@ clean:
 	$(MAKE) -C docs/docsite clean
 	$(MAKE) -C docs/api clean
 
+.PHONY: python
 python:
 	$(PYTHON) setup.py build
 
+.PHONY: install
 install:
 	$(PYTHON) setup.py install
 
+.PHONY: sdist
 sdist: clean docs
 	$(PYTHON) setup.py sdist
 
+.PHONY: sdist_upload
 sdist_upload: clean docs
 	$(PYTHON) setup.py sdist upload 2>&1 |tee upload.log
 
+.PHONY: rpmcommon
 rpmcommon: sdist
 	@mkdir -p rpm-build
 	@cp dist/*.gz rpm-build/
 	@sed -e 's#^Version:.*#Version: $(VERSION)#' -e 's#^Release:.*#Release: $(RPMRELEASE)%{?dist}$(REPOTAG)#' $(RPMSPEC) >rpm-build/$(NAME).spec
 
+.PHONY: mock-srpm
 mock-srpm: /etc/mock/$(MOCK_CFG).cfg rpmcommon
 	$(MOCK_BIN) -r $(MOCK_CFG) $(MOCK_ARGS) --resultdir rpm-build/  --buildsrpm --spec rpm-build/$(NAME).spec --sources rpm-build/
 	@echo "#############################################"
 	@echo "Ansible SRPM is built:"
 	@echo rpm-build/*.src.rpm
 	@echo "#############################################"
 
+.PHONY: mock-rpm
 mock-rpm: /etc/mock/$(MOCK_CFG).cfg mock-srpm
 	$(MOCK_BIN) -r $(MOCK_CFG) $(MOCK_ARGS) --resultdir rpm-build/ --rebuild rpm-build/$(NAME)-*.src.rpm
 	@echo "#############################################"
 	@echo "Ansible RPM is built:"
 	@echo rpm-build/*.noarch.rpm
 	@echo "#############################################"
 
+.PHONY: srpm
 srpm: rpmcommon
 	@rpmbuild --define "_topdir %(pwd)/rpm-build" \
 	--define "_builddir %{_topdir}" \
@@ -235,6 +253,7 @@ srpm: rpmcommon
 	@echo "    rpm-build/$(RPMNVR).src.rpm"
 	@echo "#############################################"
 
+.PHONY: rpm
 rpm: rpmcommon
 	@rpmbuild --define "_topdir %(pwd)/rpm-build" \
 	--define "_builddir %{_topdir}" \
@@ -251,6 +270,7 @@ rpm: rpmcommon
 	@echo "    rpm-build/$(RPMNVR).noarch.rpm"
 	@echo "#############################################"
 
+.PHONY: debian
 debian: sdist
 	@for DIST in $(DEB_DIST) ; do \
 	    mkdir -p deb-build/$${DIST} ; \
@@ -259,6 +279,7 @@ debian: sdist
         sed -ie "s|%VERSION%|$(VERSION)|g;s|%RELEASE%|$(DEB_RELEASE)|;s|%DIST%|$${DIST}|g;s|%DATE%|$(DEB_DATE)|g" deb-build/$${DIST}/$(NAME)-$(VERSION)/debian/changelog ; \
 	done
 
+.PHONY: deb
 deb: deb-src
 	@for DIST in $(DEB_DIST) ; do \
 	    PBUILDER_OPTS="$(PBUILDER_OPTS) --distribution $${DIST} --basetgz $(PBUILDER_CACHE_DIR)/$${DIST}-$(PBUILDER_ARCH)-base.tgz --buildresult $(CURDIR)/deb-build/$${DIST}" ; \
@@ -275,6 +296,7 @@ deb: deb-src
 
 # Build package outside of pbuilder, with locally installed dependencies.
 # Install BuildRequires as noted in packaging/debian/control.
+.PHONY: local_deb
 local_deb: debian
 	@for DIST in $(DEB_DIST) ; do \
 	    (cd deb-build/$${DIST}/$(NAME)-$(VERSION)/ && $(DEBUILD) -b) ; \
@@ -286,6 +308,7 @@ local_deb: debian
 	done
 	@echo "#############################################"
 
+.PHONY: deb-src
 deb-src: debian
 	@for DIST in $(DEB_DIST) ; do \
 	    (cd deb-build/$${DIST}/$(NAME)-$(VERSION)/ && $(DEBUILD) -S) ; \
@@ -297,30 +320,36 @@ deb-src: debian
 	done
 	@echo "#############################################"
 
+.PHONY: deb-upload
 deb-upload: deb
 	@for DIST in $(DEB_DIST) ; do \
 	    $(DPUT_BIN) $(DPUT_OPTS) $(DEB_PPA) deb-build/$${DIST}/$(NAME)_$(VERSION)-$(DEB_RELEASE)~$${DIST}_amd64.changes ; \
 	done
 
+.PHONY: deb-src-upload
 deb-src-upload: deb-src
 	@for DIST in $(DEB_DIST) ; do \
 	    $(DPUT_BIN) $(DPUT_OPTS) $(DEB_PPA) deb-build/$${DIST}/$(NAME)_$(VERSION)-$(DEB_RELEASE)~$${DIST}_source.changes ; \
 	done
 
+.PHONY: epub
 epub:
 	(cd docs/docsite/; CPUS=$(CPUS) make epub)
 
 # for arch or gentoo, read instructions in the appropriate 'packaging' subdirectory directory
+.PHONY: webdocs
 webdocs:
 	(cd docs/docsite/; CPUS=$(CPUS) make docs)
 
+.PHONY: generate_asciidoc
 generate_asciidoc: lib/ansible/cli/*.py
 	mkdir -p ./docs/man/man1/
 	PYTHONPATH=./lib ./docs/bin/generate_man.py
 
 docs: generate_asciidoc
 	make $(MANPAGES)
 
+.PHONY: alldocs
 alldocs: docs webdocs
 
 version: