diff --git a/examples/Makefile.in b/examples/Makefile.in
index 22722f5..8280851 100644
--- a/examples/Makefile.in
+++ b/examples/Makefile.in
@@ -388,6 +388,8 @@
 
 dist-hook:
 	rm -rf `find $(distdir) -name CVS -or -name .cvsignore`
+	rm -rf `find $(distdir) -name "*.core" -or -name ".tmp.*"`
+	rm -rf `find $(distdir) -name "*.[ch].??????"`
 
 clean-local:
 	for dir in sample.source.*; do (cd $$dir && make distclean); done