1 files changed, 29 insertions, 0 deletions
diff --git a/lib/isc/include/isc/bind9.h b/lib/isc/include/isc/bind9.h
new file mode 100644
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+++ b/lib/isc/include/isc/bind9.h
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+/*
+ * 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.
+ */
+
+#ifndef ISC_BIND9_H
+#define ISC_BIND9_H 1
+
+#include <stdbool.h>
+
+#include <isc/platform.h>
+
+/*
+ * This determines whether we are using the libisc/libdns libraries
+ * in BIND9 or in some other application.  For BIND9 (named and related
+ * tools) it must be set to true at runtime.  Export library clients
+ * will call isc_lib_register(), which will set it to false.
+ */
+LIBISC_EXTERNAL_DATA extern bool isc_bind9;
+
+#endif /* ISC_BIND9_H */