Makefile: Makes PHONY statements more maintainable.

Makefile

@@ -1,8 +1,5 @@
 PYTHON ?= python
 
-.PHONY: all style-check type-check clean clean-pyc clean-patchfiles clean-backupfiles \
-        clean-generated pylint reindent test covertest build
-
 DONT_CHECK = -i .ropeproject \
              -i .tox \
              -i build \
@@ -35,33 +32,42 @@ DONT_CHECK = -i .ropeproject \
              -i tests/typing_test_data.py \
              -i utils/convert.py
 
+.PHONY: all
 all: clean-pyc clean-backupfiles style-check type-check test
 
+.PHONY: style-check
 style-check:
 	@PYTHONWARNINGS=all $(PYTHON) utils/check_sources.py $(DONT_CHECK) .
 
+.PHONY: type-check
 type-check:
 	mypy sphinx/
 
+.PHONY: clean
 clean: clean-pyc clean-pycache clean-patchfiles clean-backupfiles clean-generated clean-testfiles clean-buildfiles clean-mypyfiles
 
+.PHONY: clean-pyc
 clean-pyc:
 	find . -name '*.pyc' -exec rm -f {} +
 	find . -name '*.pyo' -exec rm -f {} +
 
+.PHONY: clean-pycache
 clean-pycache:
 	find . -name __pycache__ -exec rm -rf {} +
 
+.PHONY: clean-patchfiles
 clean-patchfiles:
 	find . -name '*.orig' -exec rm -f {} +
 	find . -name '*.rej' -exec rm -f {} +
 
+.PHONY: clean-backupfiles
 clean-backupfiles:
 	find . -name '*~' -exec rm -f {} +
 	find . -name '*.bak' -exec rm -f {} +
 	find . -name '*.swp' -exec rm -f {} +
 	find . -name '*.swo' -exec rm -f {} +
 
+.PHONY: clean-generated
 clean-generated:
 	find . -name '.DS_Store' -exec rm -f {} +
 	rm -rf Sphinx.egg-info/
@@ -70,32 +76,41 @@ clean-generated:
 	rm -f utils/*3.py*
 	rm -f utils/regression_test.js
 
+.PHONY: clean-testfiles
 clean-testfiles:
 	rm -rf tests/.coverage
 	rm -rf tests/build
 	rm -rf .tox/
 	rm -rf .cache/
 
+.PHONY: clean-buildfiles
 clean-buildfiles:
 	rm -rf build
 
+.PHONY: clean-mypyfiles
 clean-mypyfiles:
 	rm -rf .mypy_cache/
 
+.PHONY: pylint
 pylint:
 	@pylint --rcfile utils/pylintrc sphinx
 
+.PHONY: reindent
 reindent:
 	@$(PYTHON) utils/reindent.py -r -n .
 
+.PHONY: test
 test:
 	@cd tests; $(PYTHON) run.py --ignore py35 -v $(TEST)
 
+.PHONY: test-async
 test-async:
 	@cd tests; $(PYTHON) run.py -v $(TEST)
 
+.PHONY: covertest
 covertest:
 	@cd tests; $(PYTHON) run.py -v --cov=sphinx --junitxml=.junit.xml $(TEST)
 
+.PHONY: build
 build:
 	@$(PYTHON) setup.py build