--- a/Makefile	Mon Jun 01 20:29:26 2026 +0200
+++ b/Makefile	Tue Jun 02 19:30:34 2026 +0200
@@ -35,4 +35,14 @@
 clean: FORCE
 	rm -fR build/*
 
+update-rules: config.mk FORCE
+	$(MAKE) -f make/Makefile.mk update-rules-generic
+	$(MAKE) -f make/Makefile.mk update-rules-toolkit
+
+update-all-rules: config.mk FORCE
+	$(MAKE) -f make/Makefile.mk update-rules-generic
+	for tk in libadwaita motif; do ./configure --toolkit=$$tk \
+		&& $(MAKE) -f make/Makefile.mk update-rules-toolkit ; done
+	echo '!! Attention !! You should now reconfigure your project!'
+
 FORCE: