makefile cleanup for aumix

package/aumix/aumix.mk

@@ -15,7 +15,7 @@ $(DL_DIR)/$(AUMIX_SOURCE):
 
 $(AUMIX_DIR)/.unpacked: $(DL_DIR)/$(AUMIX_SOURCE)
 	$(AUMIX_CAT) $(DL_DIR)/$(AUMIX_SOURCE) | tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
-	touch $(AUMIX_DIR)/.unpacked
+	touch $@
 
 $(AUMIX_DIR)/.configured: $(AUMIX_DIR)/.unpacked
 	(cd $(AUMIX_DIR); rm -rf config.cache; \
@@ -36,14 +36,14 @@ $(AUMIX_DIR)/.configured: $(AUMIX_DIR)/.unpacked
 		--without-sysmouse \
 		$(DISABLE_NLS) \
 	)
-	touch $(AUMIX_DIR)/.configured
+	touch $@
 
 $(AUMIX_DIR)/src/aumix: $(AUMIX_DIR)/.configured
 	$(MAKE) CC=$(TARGET_CC) -C $(AUMIX_DIR)
 
 $(AUMIX_DIR)/.installed: $(AUMIX_DIR)/src/aumix
 	$(MAKE) -C $(AUMIX_DIR) DESTDIR=$(TARGET_DIR) install
-	touch $(AUMIX_DIR)/.installed
+	touch $@
 
 aumix: uclibc ncurses $(AUMIX_DIR)/.installed