Silence erlc-include target when include/ is missing

core/erlc.mk

@@ -64,7 +64,7 @@ clean:: clean-app
 
 erlc-include:
 	-@if [ -d ebin/ ]; then \
-		find include/ src/ -type f -name \*.hrl -newer ebin -exec touch $(shell find src/ -type f -name "*.erl") \; ; \
+		find include/ src/ -type f -name \*.hrl -newer ebin -exec touch $(shell find src/ -type f -name "*.erl") \; 2>/dev/null || echo -n; \
 	fi
 
 clean-app:

erlang.mk

@@ -242,7 +242,7 @@ clean:: clean-app
 
 erlc-include:
 	-@if [ -d ebin/ ]; then \
-		find include/ src/ -type f -name \*.hrl -newer ebin -exec touch $(shell find src/ -type f -name "*.erl") \; ; \
+		find include/ src/ -type f -name \*.hrl -newer ebin -exec touch $(shell find src/ -type f -name "*.erl") \; 2>/dev/null || echo -n; \
 	fi
 
 clean-app: