diff --git a/make/projects-dir.mk b/make/projects-dir.mk
index 58b23ca5..53c86ff5 100644
--- a/make/projects-dir.mk
+++ b/make/projects-dir.mk
@@ -91,6 +91,9 @@ update pull: purge cvs-update git-clone git-pull
 pull-all: purge cvs-update git-clone git-pull-all
 	touch pull.done
 
+diff-all diff:
+	cvs diff -u; $(PGIT) diff
+
 rebuild: clean pull subdirs-all
 
 release:
@@ -103,6 +106,9 @@ cvs-update:
 	rm -f $@.done
 	make $@.done
 
+cvs-diff:
+	cvs diff -u
+
 git-push push:
 	$(PGIT) push