/* Copyright (c) University of Cambridge 1995 - 2012, 2014 */
/* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* This module provides DANE (RFC6659) support for Exim. See also
the draft RFC for DANE-over-SMTP, "SMTP security via opportunistic DANE TLS"
in a dummy argument to stop even pickier compilers complaining about infinite
loops. */
-#ifndef EXPERIMENTAL_DANE
+#ifndef SUPPORT_DANE
static void dummy(int x) { dummy(x-1); }
#else
/* Enabling DANE without enabling TLS cannot work. Abort the compilation. */
-# ifndef SUPPORT_TLS
+# ifdef DISABLE_TLS
# error DANE support requires that TLS support must be enabled. Abort build.
# endif
-# ifdef USE_GNUTLS
-# include "dane-gnu.c"
-# else
+/* DNSSEC support is also required */
+# ifndef RES_USE_DNSSEC
+# error DANE support requires that the DNS resolver library supports DNSSEC
+# endif
+
+# ifdef USE_OPENSSL
# include "dane-openssl.c"
# endif
-#endif /* EXPERIMENTAL_DANE */
+#endif /* SUPPORT_DANE */
/* End of dane.c */