From 18f1f8f8d12131402ca13b53488870f2ab21d3d1 Mon Sep 17 00:00:00 2001
From: defanor <defanor@uberspace.net>
Date: Tue, 21 Sep 2021 21:39:52 +0300
Subject: Make libunbound optional

Just use gethostbyname when it's disabled. Possibly will add c-ares,
getaddrinfo_a, and other options in the future.
---
 configure.ac | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index d9453ed..9e8e080 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,7 +24,7 @@ PKG_CHECK_MODULES([GSASL], [libgsasl])
 PKG_CHECK_MODULES([NETTLE], [nettle])
 
 
-# DNS: libunbound
+# DNS: libunbound, optional
 
 AC_ARG_VAR([DNSSEC_TRUST_ANCHOR_FILE],
         [A DNSSEC trust anchor, containing DNSKEY in zone file format])
@@ -34,7 +34,12 @@ AC_DEFINE_UNQUOTED([DNSSEC_TRUST_ANCHOR_FILE],
         "$DNSSEC_TRUST_ANCHOR_FILE",
         [A DNSSEC trust anchor, containing DNSKEY in zone file format])
 
-PKG_CHECK_MODULES([UNBOUND], [libunbound])
+AC_ARG_WITH([unbound],
+        AS_HELP_STRING([--without-unbound], [don't use libunbound]))
+
+AS_IF([test "x$with_unbound" != "xno"],
+      [PKG_CHECK_MODULES([UNBOUND], [libunbound],
+        [AC_DEFINE([USE_UNBOUND], [1], [Use libunbound])])])
 
 # GPGME, optional
 
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