developers-reference*.sasp* developers-reference*.tex \
developers-reference*.aux developers-reference*.toc \
developers-reference*.idx developers-reference*.log \
- developers-reference*.out developers-reference*.dvi
+ developers-reference*.out developers-reference*.dvi \
+ developers-reference*.tpt
rm -f version.ent
rm -f `find . -name "*~" -o -name "*.bak"`
rm -f *.validate
developers-reference$(SRCEXT).sgml: version.ent common.ent
html: $(MANUAL).html
+
+# if rule bomb out, delete the target
+.DELETE_ON_ERROR: