+#! /bin/sh
+# Copyright (C) 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 parallel-tests interactions with "make -n".
+
+parallel_tests=yes
+. ./defs || Exit 1
+
+set -e
+
+echo AC_OUTPUT >> configure.in
+
+cat > Makefile.am <<'END'
+TESTS = foo.test bar.test
+$(TESTS):
+END
+
+$ACLOCAL
+$AUTOCONF
+$AUTOMAKE -a
+
+./configure
+
+# Avoid confusion with test logs.
+rm -f config.log
+
+log_files='test-suite.log foo.log bar.log'
+html_files='test-suite.html foo.html bar.html'
+the_files="$log_files $html_files"
+
+all_exist ()
+{
+ st=0
+ for i in $*; do
+ test -f $i || { echo File $i not found; st=1; }
+ done
+ test $st -eq 0
+}
+
+none_exist ()
+{
+ st=0
+ for i in $*; do
+ { test -r $i || test -f $i; } && { echo File $i found; st=1; }
+ done
+ test $st -eq 0
+}
+
+for targ in check recheck check-html recheck-html $the_files; do
+ $MAKE -n "$targ"
+ none_exist $the_files
+done
+
+touch $the_files
+
+$MAKE -n mostlyclean
+all_exist $the_files
+$MAKE -n clean
+all_exist $the_files
+
+cat > foo.test <<'END'
+#! /bin/sh
+exit 0
+END
+
+cat > bar.test <<'END'
+#! /bin/sh
+exit 1
+END
+
+chmod a+x foo.test bar.test
+
+$MAKE check && Exit 1
+
+for targ in recheck recheck-html clean mostlyclean distclean; do
+ $MAKE -n "$targ"
+ all_exist $the_files
+done
+
+: