Dustin, Here's what I use in my make files. The erlc program recognizes .rel files and builds .boot files automatically. -Vance ERLC = erlc ERLCFLAGS = +no_debug_info +warn_unused_vars -W -v EMULATOR = beam %.boot:%.rel $(ERLC) $< %.tar.gz: all %.boot $(ERL) -noshell -run systools make_tar $* -run init stop