From de4ee0eedaec96b37149d1176f88d1ad96b2e406 Mon Sep 17 00:00:00 2001
From: Otto Moerbeek <otto@drijf.net>
Date: Fri, 23 Sep 2022 07:31:35 +0200
Subject: [PATCH] Warn if snmp-agent is set but SNMP is not available.

Fixes #11998
---
 pdns/recursordist/rec-main.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pdns/recursordist/rec-main.cc b/pdns/recursordist/rec-main.cc
index 90b650b489..a7c5347fc8 100644
--- a/pdns/recursordist/rec-main.cc
+++ b/pdns/recursordist/rec-main.cc
@@ -1944,12 +1944,18 @@ static int serviceMain(int argc, char* argv[], Logr::log_t log)
   disableStats(StatComponent::SNMP, ::arg()["stats-snmp-disabled-list"]);
 
   if (::arg().mustDo("snmp-agent")) {
+#ifdef HAVE_NET_SNMP
     string setting = ::arg()["snmp-daemon-socket"];
     if (setting.empty()) {
       setting = ::arg()["snmp-master-socket"];
     }
     g_snmpAgent = std::make_shared<RecursorSNMPAgent>("recursor", setting);
     g_snmpAgent->run();
+#else
+    const std::string msg = "snmp-agent set but SNMP support not compiled in";
+    SLOG(g_log << Logger::Error << msg << endl,
+         log->info(Logr::Error, msg));
+#endif // HAVE_NET_SNMP
   }
 
   int port = ::arg().asNum("udp-source-port-min");
-- 
2.47.2