Fix broken test on OSX

test/core_deps.mk

@@ -123,12 +123,12 @@ core-deps-apps-build-count: build clean
 	$i "Create a new application app_one"
 	$t $(MAKE) -C $(APP) new-app in=app_one $v
 	$t echo "all::" >> $(APP)/apps/app_one/Makefile
-	$t echo "	@echo -n '#' >> count" >> $(APP)/apps/app_one/Makefile
+	$t echo "	@printf '#' >> count" >> $(APP)/apps/app_one/Makefile
 
 	$i "Create a new application app_two"
 	$t $(MAKE) -C $(APP) new-app in=app_two $v
 	$t echo "all::" >> $(APP)/apps/app_two/Makefile
-	$t echo "	@echo -n '#' >> count" >> $(APP)/apps/app_two/Makefile
+	$t echo "	@printf '#' >> count" >> $(APP)/apps/app_two/Makefile
 
 	$i "Build the application"
 	$t $(MAKE) -C $(APP) $v