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-rw-r--r--bin/tests/system/chain/prereq.sh50
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diff --git a/bin/tests/system/chain/prereq.sh b/bin/tests/system/chain/prereq.sh
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+#!/bin/sh
+
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+
+if test -n "$PYTHON"
+then
+ if $PYTHON -c "import dns" 2> /dev/null
+ then
+ :
+ else
+ echo_i "This test requires the dnspython module." >&2
+ exit 1
+ fi
+else
+ echo_i "This test requires Python and the dnspython module." >&2
+ exit 1
+fi
+
+if $PERL -e 'use Net::DNS;' 2>/dev/null
+then
+ if $PERL -e 'use Net::DNS; die if ($Net::DNS::VERSION >= 0.69 && $Net::DNS::VERSION <= 0.74);' 2>/dev/null
+ then
+ :
+ else
+ echo_i "Net::DNS versions 0.69 to 0.74 have bugs that cause this test to fail: please update." >&2
+ exit 1
+ fi
+else
+ echo_i "This test requires the perl Net::DNS library." >&2
+ exit 1
+fi
+if $PERL -e 'use Net::DNS::Nameserver;' 2>/dev/null
+then
+ :
+else
+ echo_i "This test requires the Net::DNS::Nameserver library." >&2
+ exit 1
+fi