libcurl/libglade: touch _HOOK_POST_INSTALL target

package/libcurl/libcurl.mk

@@ -21,6 +21,7 @@ $(eval $(call AUTOTARGETS,package,libcurl))
 $(LIBCURL_HOOK_POST_INSTALL):
 	rm -rf $(TARGET_DIR)/usr/bin/curl-config \
 	       $(if $(BR2_PACKAGE_CURL),,$(TARGET_DIR)/usr/bin/curl)
+	touch $@
 
 curl: libcurl
 curl-clean: libcurl-clean

package/libglade/libglade.mk

@@ -15,3 +15,4 @@ $(LIBGLADE_HOOK_POST_INSTALL):
 	rm -rf $(TARGET_DIR)/usr/share/gtk-doc \
 	       $(TARGET_DIR)/usr/share/xml/libglade \
 	       $(TARGET_DIR)/usr/bin/libglade-convert
+	touch $@