Index: tools/Makefile.am
===================================================================
--- tools/Makefile.am	(revision 95d0a5db33a507584580dc37674209d5be2faa98)
+++ tools/Makefile.am	(revision e1f7eefc84701acc2af857cd1c484e5650e81cba)
@@ -16,4 +16,5 @@
 
 AUTOMAKE_OPTIONS = foreign    # do not require all the GNU file names
+ACLOCAL_AMFLAGS  = -I automake
 
 AM_CFLAGS = -Wall -Wextra -O2 -g