Index: tools/Makefile.am
===================================================================
--- tools/Makefile.am	(revision 534e4e460878f8a2e7d24b4a0413515e6acd1dae)
+++ tools/Makefile.am	(revision 0c1b5660b6f5a0957c905780ecc5883a812e52a7)
@@ -15,6 +15,8 @@
 ###############################################################################
 
+AUTOMAKE_OPTIONS = foreign    # do not require all the GNU file names
+
 CC = @BACKEND_CC@
-CFLAGS = -Wall -Wextra -O2 -g
+AM_CFLAGS = -Wall -Wextra -O2 -g
 
 noinst_PROGRAMS = busy catchsig repeat watchdog
Index: tools/Makefile.in
===================================================================
--- tools/Makefile.in	(revision 534e4e460878f8a2e7d24b4a0413515e6acd1dae)
+++ tools/Makefile.in	(revision 0c1b5660b6f5a0957c905780ecc5883a812e52a7)
@@ -202,5 +202,5 @@
 CFA_NAME = @CFA_NAME@
 CFA_PREFIX = @CFA_PREFIX@
-CFLAGS = -Wall -Wextra -O2 -g
+CFLAGS = @CFLAGS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
@@ -303,4 +303,6 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
+AUTOMAKE_OPTIONS = foreign    # do not require all the GNU file names
+AM_CFLAGS = -Wall -Wextra -O2 -g
 busy_SOURCES = busy.c
 busy_LDFLAGS = -pthread
Index: tools/prettyprinter/Makefile.am
===================================================================
--- tools/prettyprinter/Makefile.am	(revision 534e4e460878f8a2e7d24b4a0413515e6acd1dae)
+++ tools/prettyprinter/Makefile.am	(revision 0c1b5660b6f5a0957c905780ecc5883a812e52a7)
@@ -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
Index: tools/prettyprinter/Makefile.in
===================================================================
--- tools/prettyprinter/Makefile.in	(revision 534e4e460878f8a2e7d24b4a0413515e6acd1dae)
+++ tools/prettyprinter/Makefile.in	(revision 0c1b5660b6f5a0957c905780ecc5883a812e52a7)
@@ -327,4 +327,5 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
+AUTOMAKE_OPTIONS = foreign    # do not require all the GNU file names
 BUILT_SOURCES = parser.hh
 AM_YFLAGS = -d -t -v