automake: Don't rely on List::Util to provide 'none'

This change fixes automake bug#30631.

This removes the use of List::Util which is not supported by Perl 5.6,
by reimplementing the 'none' subroutine.

* lib/Automake/General.pm (none): New subroutine.
* bin/automake.in (handle_single_transform): Use it.
* t/pm/General.pl: New test.
* t/list-of-tests.mk (perl_TESTS): Add it.
* NEWS: Update.

1 files changed, 27 insertions, 0 deletions

diff --git a/t/pm/General.pl b/t/pm/General.pl
new file mode 100644
index 000000000..0caefe7cf
--- /dev/null
+++ b/t/pm/General.pl
@@ -0,0 +1,27 @@
+# Copyright (C) 2018 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 <https://www.gnu.org/licenses/>.
+
+use Automake::General;
+
+my $failed = 0;
+
+# Check 'none'.
+my $none_positive = none { $_[0] < 0 } (1, 7, 3, 8, 9);
+$failed = 1 if ($none_positive == 0);
+
+my $none_gt_8 = none { $_[0] >= 8 } (1, 7, 3, 8, 9);
+$failed = 1 if ($none_gt_8 == 1);
+
+exit $failed;