make serve function

Makefile

@@ -1,6 +1,8 @@
 src := content
 cache := .cache
-www := _site/posts
+www_root := _site
+www := $(www_root)/posts
+post_index := $(www_root)/posts.html
 
 post_compiler := src/webcc.ml
 builddir := _build/default
@@ -10,7 +12,9 @@ POSTCC := $(builddir)/$(patsubst %.ml,%.exe,$(post_compiler))
 post-sources := $(shell find $(src)/ -type f)
 post-htmls   := $(patsubst $(src)/%.md,$(www)/%.html,$(post-sources))
 
-all: $(POSTCC) $(post-htmls)
+.PHONY: all serve clean $(post_index)
+
+all: $(POSTCC) $(post-htmls) $(post_index) $(www_root)/static
 
 $(www):
 	mkdir -p $(www)
@@ -18,8 +22,20 @@ $(www):
 $(www)/%.html: $(src)/%.md $(www)
 	$(POSTCC) $< -o $@
 
+# make sure that this target is .PHONY!
+$(post_index):
+	echo LOL > $@
+
+
+$(www_root)/static:
+	cp -R static $@
+
 $(POSTCC): $(post_compiler)
 	dune build
 
 clean:
 	rm $(POSTCC)
+	rm -fr $(www_root)
+
+serve:
+	cd $(www_root) && python -m SimpleHTTPServer