1 files changed, 50 insertions, 0 deletions
diff --git a/t/autodist-no-duplicate.sh b/t/autodist-no-duplicate.sh
new file mode 100755
index 000000000..90a2c7dfc
--- /dev/null
+++ b/t/autodist-no-duplicate.sh
@@ -0,0 +1,50 @@
+#! /bin/sh
+# Copyright (C) 2011-2012 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Check that there are no duplicates in the list of files automatically
+# distributed by automake.
+
+. ./defs || Exit 1
+
+re='Files .*automatically distributed.*if found'
+
+# The automake manual states that the list of automatically-distributed
+# files should be given by 'automake --help'.
+
+list1=`$AUTOMAKE --help \
+        | sed -n "/^$re.*always/,/^ *$/p" \
+        | sed 1d`
+list1=`echo $list1`
+
+list2=`$AUTOMAKE --help \
+        | sed -n "/^$re.*under certain conditions/,/^ *$/p" \
+        | sed 1d`
+list2=`echo $list2`
+
+test -n "$list1"
+test -n "$list2"
+
+st=0
+for i in 1 2; do
+  eval list=\${list$i}
+  for f in $list; do echo $f; done | sort > files$i.lst
+  uniq files$i.lst > files$i.uniq
+  cat files$i.lst
+  cat files$i.uniq
+  diff files$i.lst files$i.uniq || st=1
+done
+
+Exit $st