Minor changes

Makefile

@@ -1,10 +1,10 @@
-src_dir := ./src
-docs_dir := ./docs
-tests_dir := ./tests
-build_dir := ./build
-docs_build_dir := ./build/docs
+SRC_DIR := ./src
+DOCS_DIR := ./docs
+TESTS_DIR := ./tests
+BUILD_DIR := ./build
+DOCS_BUILD_DIR := ./build/docs
 
-.PHONY: help tests docs
+.PHONY: help tests docs man install uninstall
 
 all: man
 
@@ -14,35 +14,42 @@ help:
 	@echo Available targets:
 	@echo
 	@echo 'help	print this help message'
-	@echo 'test	run tests from $(tests_dir)'
+	@echo 'tests	run tests from $(TESTS_DIR)'
 	@echo 'lint	run shellcheck'
-	@echo 'man	build manual pages from $(docs_dir)'
+	@echo 'man	build manual pages from $(DOCS_DIR)'
 	@echo
 	@echo See README.md for more info.
 
-test:
+tests:
 	# See bats(1), https://bats-core.readthedocs.io/en/latest/index.html
-	for test in $(tests_dir)/*.bats; do \
+	for test in $(TESTS_DIR)/*.bats; do \
 		bats --verbose-run --print-output-on-failure "$$test"; \
 	done
 
 lint:
-	shellcheck $(src_dir)/boring-backup
-	shellcheck $(src_dir)/lib/*.sh
-	shellcheck $(src_dir)/lib/handlers/sources/*.sh
-	shellcheck $(src_dir)/lib/handlers/targets/*.sh
+	shellcheck $(SRC_DIR)/boring-backup
+	shellcheck $(SRC_DIR)/lib/*.sh
+	shellcheck $(SRC_DIR)/lib/handlers/sources/*.sh
+	shellcheck $(SRC_DIR)/lib/handlers/targets/*.sh
 
 man: build_dir
 	# See rst2man(1), rst2html(1),
 	# https://docutils.sourceforge.io/docs/index.html
-	rst2man $(docs_dir)/boring-backup.ru.1.rst \
-		> $(docs_build_dir)/boring-backup.ru.1
+	rst2man $(DOCS_DIR)/boring-backup.ru.1.rst \
+		> $(DOCS_BUILD_DIR)/boring-backup.ru.1
 	sed -e 's/.SH NAME/.SH ИМЯ/' \
 		-e 's/.SH AUTHOR/.SH АВТОРЫ/' \
 		-e 's/.SH COPYRIGHT/.SH АВТОРСКИЕ ПРАВА/' \
-		-i $(docs_build_dir)/boring-backup.ru.1
-	gzip -9 $(docs_build_dir)/boring-backup.ru.1
+		-i $(DOCS_BUILD_DIR)/boring-backup.ru.1
+	gzip -9 $(DOCS_BUILD_DIR)/boring-backup.ru.1
 
 build_dir:
-	mkdir -p $(build_dir)
-	mkdir -p $(docs_build_dir)
+	mkdir -p $(BUILD_DIR)
+	mkdir -p $(DOCS_BUILD_DIR)
+
+install:
+	# install
+
+uninstall:
+	# uninstall
+