Index: trunk/doc/Makefile
===================================================================
--- trunk/doc/Makefile	(revision 6017)
+++ trunk/doc/Makefile	(revision 6018)
@@ -4,11 +4,11 @@
 
 all:
-	for i in $(DIR); do (cd $$i; make all); done
+	for i in $(DIR); do (cd $$i; make all || exit); done
 
 clean:
 	@rm -f *~ #* .*~
-	for i in $(DIR); do (cd $$i; make clean); done
+	for i in $(DIR); do (cd $$i; make clean || exit); done
 
 dist:
 	@rm -f *~ #* .*~
-	for i in $(DIR); do (cd $$i; make dist); done
+	for i in $(DIR); do (cd $$i; make dist || exit); done