Index: tools/prettyprinter/Makefile.am
===================================================================
--- tools/prettyprinter/Makefile.am	(revision 81bb114433843f3bc8e0db517f991b0cc892e8ca)
+++ tools/prettyprinter/Makefile.am	(revision e5ea867f74eefbaecafb0b5081b7a0a3ed60d64f)
@@ -1,11 +1,11 @@
 ######################## -*- Mode: Makefile-Automake -*- ######################
-## 
+##
 ## Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
 ##
 ## The contents of this file are covered under the licence agreement in the
 ## file "LICENCE" distributed with Cforall.
-## 
-## Makefile.am -- 
-## 
+##
+## Makefile.am --
+##
 ## Author           : Peter A. Buhr
 ## Created On       : Wed Jun 28 12:07:10 2017
@@ -14,4 +14,6 @@
 ## Update Count     : 20
 ###############################################################################
+
+AUTOMAKE_OPTIONS = foreign    # do not require all the GNU file names
 
 BUILT_SOURCES = parser.hh