check config changes on make world

SVN-Revision: 410

openwrt/Makefile

@@ -69,9 +69,13 @@ package_install: toolchain
 # In this section, we need .config
 include .config.cmd
 
-world: $(DL_DIR) $(BUILD_DIR) target_prepare $(TARGET_DIR) toolchain_install package_install target_install package_index
+world: $(DL_DIR) $(BUILD_DIR) configtest target_prepare $(TARGET_DIR) toolchain_install package_install target_install package_index
 
-.PHONY: all world clean dirclean distclean image_clean target_clean source target_prepare target_install toolchain_install package_install
+.PHONY: all world clean dirclean distclean image_clean target_clean source target_prepare target_install toolchain_install package_install configtest
+
+configtest:
+	-cp .config .config.test
+	-scripts/configtest.pl
 
 package_index:
 	(cd $(PACKAGE_DIR); \