Makefile for Elm

HTML_SRC=src/index.html
ELM_SRC=src/Main.elm
DIST=public
RIGHT_NOW=$(shell date "+%B %d, %Y at %H:%M:%S")
TIMESTAMP="<!-- Created at $(RIGHT_NOW) -->\n"

all: public index.html main.js

public:
        @ mkdir $(DIST)

index.html:
        @ echo $(TIMESTAMP) > $(DIST)/$@
        @ cat $(HTML_SRC) >> $(DIST)/$@

main.js:
        elm-make $(ELM_SRC) --output $(DIST)/$@

clean:
        @ rm -rf $(DIST)

.PHONY: all clean