Use rebar3 dialyzer.

Makefile

@@ -21,3 +21,6 @@ rel:
 
 stage:
 	$(REBAR) release -d
+
+dialyzer:
+	$(REBAR) dialyzer

tools.mk

@@ -1,59 +1,7 @@
-REBAR ?= ./rebar
+REBAR ?= ./rebar3
 
 docs:
 	${REBAR} doc skip_deps=true
 
 xref: compile
 	${REBAR} xref skip_deps=true
-
-PLT ?= $(HOME)/.combo_dialyzer_plt
-LOCAL_PLT = .local_dialyzer_plt
-DIALYZER_FLAGS ?= -Wunmatched_returns -Werror_handling -Wrace_conditions -Wunderspecs
-
-${PLT}: compile
-	@if [ -f $(PLT) ]; then \
-		dialyzer --check_plt --plt $(PLT) --apps $(DIALYZER_APPS) && \
-		dialyzer --add_to_plt --plt $(PLT) --output_plt $(PLT) --apps $(DIALYZER_APPS) ; test $$? -ne 1; \
-	else \
-		dialyzer --build_plt --output_plt $(PLT) --apps $(DIALYZER_APPS); test $$? -ne 1; \
-	fi
-
-${LOCAL_PLT}: compile
-	@if [ -d deps ]; then \
-		if [ -f $(LOCAL_PLT) ]; then \
-			dialyzer --check_plt --plt $(LOCAL_PLT) deps/*/ebin && \
-			dialyzer --add_to_plt --plt $(LOCAL_PLT) --output_plt $(LOCAL_PLT) deps/*/ebin ; test $$? -ne 1; \
-		else \
-			dialyzer --build_plt --output_plt $(LOCAL_PLT) deps/*/ebin ; test $$? -ne 1; \
-		fi \
-	fi
-
-dialyzer: ${PLT} ${LOCAL_PLT}
-	@echo "==> $(shell basename $(shell pwd)) (dialyzer)"
-	@if [ -f $(LOCAL_PLT) ]; then \
-		PLTS="$(PLT) $(LOCAL_PLT)"; \
-	else \
-		PLTS=$(PLT); \
-	fi; \
-	if [ -f dialyzer.ignore-warnings ]; then \
-		if [ $$(grep -cvE '[^[:space:]]' dialyzer.ignore-warnings) -ne 0 ]; then \
-			echo "ERROR: dialyzer.ignore-warnings contains a blank/empty line, this will match all messages!"; \
-			exit 1; \
-		fi; \
-		dialyzer $(DIALYZER_FLAGS) --plts $${PLTS} -c ebin > dialyzer_warnings ; \
-		egrep -v "^[[:space:]]*(done|Checking|Proceeding|Compiling)" dialyzer_warnings | grep -F -f dialyzer.ignore-warnings -v > dialyzer_unhandled_warnings ; \
-		cat dialyzer_unhandled_warnings ; \
-		[ $$(cat dialyzer_unhandled_warnings | wc -l) -eq 0 ] ; \
-	else \
-		dialyzer $(DIALYZER_FLAGS) --plts $${PLTS} -c ebin; \
-	fi
-
-cleanplt:
-	@echo
-	@echo "Are you sure?  It takes several minutes to re-build."
-	@echo Deleting $(PLT) and $(LOCAL_PLT) in 5 seconds.
-	@echo
-	sleep 5
-	rm $(PLT)
-	rm $(LOCAL_PLT)
-