Add TOOLS_CFLAGS to build preamble

Makefile

@@ -1384,6 +1384,9 @@ endif
 	@echo "  SERVER_CFLAGS:"
 	$(call print_wrapped, $(SERVER_CFLAGS))
 	@echo ""
+	@echo "  TOOLS_CFLAGS:"
+	$(call print_wrapped, $(TOOLS_CFLAGS))
+	@echo ""
 	@echo "  LDFLAGS:"
 	$(call print_wrapped, $(LDFLAGS))
 	@echo ""