[erlang-questions] Makefile detecting / downloading rebar

[Gleb Peregud]

IMO "best" solution is:

REBAR=$(shell which rebar || echo ./rebar)
REBAR_URL=http://cloud.github.com/downloads/basho/rebar/rebar

all: $(REBAR)
	$(REBAR) compile

./rebar:
	erl -noshell -s inets -s ssl \
		-eval 'httpc:request(get, {"$(REBAR_URL)", []}, [], [{stream, "./rebar"}])' \
		-s init stop
	chmod +x ./rebar

distclean:
	rm -f ./rebar

Thanks Michael!