Makefile: add documentation build targets docs & docs-live

BTW:
- add build & dist folder to .gitignore
- justify indentation of build messages (makefile.python)

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

.gitignore

@@ -19,5 +19,7 @@ node_modules/
 
 .tx/
 
+build/
+dist/
 local/
 searx.egg-info/

Makefile

@@ -1,16 +1,20 @@
 # -*- coding: utf-8; mode: makefile-gmake -*-
 
 PYOBJECTS = searx
+DOC       = docs
 PY_SETUP_EXTRAS ?= \[test\]
 
 include utils/makefile.include
 include utils/makefile.python
+include utils/makefile.sphinx
 
 all: clean install
 
 PHONY += help
 help:
 	@echo  '  test      - run developer tests'
+	@echo  '  docs      - build documentation'
+	@echo  '  docs-live - autobuild HTML documentation while editing'
 	@echo  '  run       - run developer instance'
 	@echo  '  install   - developer install (./local)'
 	@echo  '  uninstall - uninstall (./local)'
@@ -40,6 +44,18 @@ run:  pyenvinstall
 	) &
 	$(PY_ENV)/bin/python ./searx/webapp.py
 
+# docs
+# ----
+
+PHONY += docs
+docs:  pyenvinstall sphinx-doc
+	$(call cmd,sphinx,html,docs,docs)
+
+PHONY += docs-live
+docs-live:  pyenvinstall sphinx-live
+	$(call cmd,sphinx_autobuild,html,docs,docs)
+
+
 # test
 # ----