> To begin with you have to have a single target for each file produced. Try this next time (only the pertinent lines are included): SOURCES=$(wildcard $(SR

> To begin with you have to have a single target for each file produced. Try this next time (only the pertinent lines are included): SOURCES=$(wildcard $(SRCDIR)/*.erl) OBJECTS=$(addprefix $(OBJDIR)/, $(notdir $(SOURCES:.erl=.beam))) DEPS = $(addprefix $(DEPDIR)/, $(notdir $(SOURCES:.erl=.Pbeam))) $(addprefix $(DEPDIR)/, $(notdir $(TEMPLATES:.dtl=.Pbeam))) -include $(DEPS) # define a suffix rule for .erl -> .beam $(OBJDIR)/%.beam: $(SRCDIR)/%.erl | $(OBJDIR) $(ERLC) $(ERLCFLAGS) -o $(OBJDIR) $< #see this: http://www.gnu.org/software/make/manual/html_node/Pattern-Match.html $(DEPDIR)/%.Pbeam: $(SRCDIR)/%.erl | $(DEPDIR) $(ERLC) -MF $@ -MT $(OBJDIR)/$*.beam $(ERLCFLAGS) $< #the | pipe operator, defining an order only prerequisite. Meaning #that the $(OBJDIR) target should be existent (instead of more recent) #in order to build the current target $(OBJECTS): | $(OBJDIR) $(OBJDIR): test -d $(OBJDIR) || mkdir $(OBJDIR) $(DEPDIR): test -d $(DEPDIR) || mkdir $(DEPDIR) I've been using a makefile about 40 lines long and I've never needed to update the makefile as i've added source files. Same makefile (with minor tweaks) works across Erlang, C++, ErlyDTL and other compile-time templates and what have you. Also does automagic dependencies very nicely. > Generating all the targets to get around this is a nightmare that results in unreadable debug messages and horribly unpredictable call paths. If you think of Makefiles as a series of call paths, you're going to have a bad time. It's a dependency graph. You define rules for going from one node to the next and let Make figure out how to walk the graph.