--- a/Makefile	Sat Jul 18 22:00:49 2026 +0200
+++ b/Makefile	Sun Jul 19 17:13:16 2026 +0200
@@ -51,6 +51,6 @@
 update-rules:
 	make/update-rules.sh src
 	make/update-rules.sh src/chess
-	make/update-rules.sh test
+	CFLAGS="$(CFLAGS)  -I../src" make/update-rules.sh test
 
 FORCE: