Add Documentation to the autotools pipeline

etc/make/emacs.mk

@@ -1,5 +1,14 @@
-EMACS = emacs -q --batch --load config.el
+EMACS = emacs -q --batch --load $(top_srcdir)/config.el
+EMACS_HTML = $(EMACS) --load $(top_srcdir)/etc/emacs/html.el
+
 define tangle
 $(EMACS) $(1) --eval '(org-babel-tangle)'
 endef
 
+SUFFIXES = .html .org .rst
+
+.org.html:
+	$(EMACS_HTML) $< -f org-html-export-to-html
+
+.org.rst:
+	$(EMACS_HTML) $< -f org-rst-export-to-rst