1 files changed, 1 insertions, 1 deletions
diff --git a/cfg.mk b/cfg.mk
index eeb26a7..48ccc0c 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -31,7 +31,7 @@ $(STAGEDIR)/manifest:
 
 $(STAGEDIR)/%.m4 : $(M4DIR)/%.m4 $(STAGEDIR)/manifest $(srcdir)/macro.py $(srcdir)/macro2m4.py
 	$(srcdir)/macro2m4.py "$<" "$@"
-	@diff -u "$<" "$@"
+	@diff -u "$<" "$@" || (touch --date="1970-01-01 01:00:00" "$@"; false)
 
 $(DOCDIR)/%.texi : $(STAGEDIR)/%.m4 $(srcdir)/macro2texi.py $(srcdir)/macro.py
 	$(srcdir)/macro2texi.py "$<" "$@"