Compile snippets and improve site-lisp compilation

Files can't be left out from being compiled anymore.

Even though the snippet rules depend on every
`.yas-compiled-snippets.el' separately, when the first is compiled, the
rest don't need to anymore.

emacs/.emacs.d/Makefile

@@ -1,31 +1,53 @@
-SITE_LISPS = site-lisp/oni-smt.elc site-lisp/appt-init.elc \
+EMACS = cask exec emacs
-	site-lisp/jabber-init.elc site-lisp/org-init.elc \
+EARGS = -Q -batch -l package
-	site-lisp/gnus-init.elc site-lisp/drd.elc \
-	site-lisp/oni-eshell-prompt.elc
 
-.PHONY: all site-lisp
+.PHONY: all site-lisp snippets
-all: init2.elc init.elc $(SITE_LISPS) site-lisp/site-autoloads.el
+all: init2.elc init.elc site-lisp/site-autoloads.el snippets
+
+### Init
 
 %.elc: %.el
 	@echo "ELC $<"
-	@cask exec emacs -Q -batch -l package -eval "(byte-compile-file \"$<\")"
+	@$(EMACS) $(EARGS) -eval "(byte-compile-file \"$<\")"
 
 init.el: init2.el
 init2.el: init.org org/intro.org
 	@echo "OBT $<"
-	@emacs -Q -batch -l "ob-tangle" -eval "(org-babel-tangle-file \"init.org\")"
+	@$(EMACS) $(EARGS) -l "ob-tangle" \
+		-eval "(org-babel-tangle-file \"init.org\")"
 
-site-lisp/site-autoloads.el: $(SITE_LISPS)
+### Site Lisp
+
+AUTOLOADS_FILE=site-lisp/site-autoloads.el
+UNWANTED=$(AUTOLOADS_FILE) site-lisp/flycheck_% site-lisp/flycheck-%
+SITE_LISPS = $(addsuffix c,$(filter-out $(UNWANTED),$(wildcard site-lisp/*.el)))
+
+$(AUTOLOADS_FILE): $(SITE_LISPS)
 	@echo "GEN $@"
-	@cask exec emacs -Q -batch \
+	@$(EMACS) $(EARGS) \
 		-eval "(setq generated-autoload-file \"$(CURDIR)/$@\")" \
 		-eval "(update-directory-autoloads \"$(CURDIR)/site-lisp/\")"
 
+### Snippets
+
+SNIPPET_DIRS = $(wildcard snippets/*)
+COMPILED_SNIPPETS = $(addsuffix /.yas-compiled-snippets.el, $(SNIPPET_DIRS))
+
+%/.yas-compiled-snippets.el: %/*
+	$(EMACS) $(EARGS) -l yasnippet \
+		-eval "(yas-compile-directory \"$(CURDIR)/snippets\")"
+
+snippets: $(COMPILED_SNIPPETS)
+
+### Packages
+
 rudel:
 	git clone git://github.com/scymtym/rudel.git packages/rudel
-	emacs -Q --batch --visit packages/rudel/rudel-compile.el \
+	$(EMACS) $(EARGS) --visit packages/rudel/rudel-compile.el \
 		--eval "(eval-buffel)"
 
+### Cleanup
+
 clean-byte-compiled:
 	rm -f $(SITE_LISPS) init2.elc init.elc
 
@@ -37,6 +59,8 @@ clean-export:
 
 clean: clean-export clean-byte-compiled clean-generated
 
+### HTML Export
+
 export: clean-export
 	emacs -L $(CURDIR) -L ~/.emacs.d/vendor-lisp/org/lisp \
 		-L ~/.emacs.d/vendor-lisp/org/contrib/lisp -batch -l project.el \