diff --git a/lib/base/configobject.cpp b/lib/base/configobject.cpp
index 4317771d1f8..f71043d4be9 100644
--- a/lib/base/configobject.cpp
+++ b/lib/base/configobject.cpp
@@ -421,7 +421,7 @@ void ConfigObject::OnAllConfigLoaded()
 		m_Zone = ctype->GetObject(zoneName);
 }
 
-void ConfigObject::CreateChildObjects(const Type::Ptr& childType)
+void ConfigObject::CreateChildObjects(const Type::Ptr&)
 {
 	/* Nothing to do here. */
 }
diff --git a/lib/base/configuration.cpp b/lib/base/configuration.cpp
index 908c1618379..86267fba3d9 100644
--- a/lib/base/configuration.cpp
+++ b/lib/base/configuration.cpp
@@ -72,7 +72,7 @@ String Configuration::GetApiBindHost() const
 	return Configuration::ApiBindHost;
 }
 
-void Configuration::SetApiBindHost(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetApiBindHost(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ApiBindHost", &Configuration::ApiBindHost, val, m_ReadOnly);
 }
@@ -82,7 +82,7 @@ String Configuration::GetApiBindPort() const
 	return Configuration::ApiBindPort;
 }
 
-void Configuration::SetApiBindPort(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetApiBindPort(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ApiBindPort", &Configuration::ApiBindPort, val, m_ReadOnly);
 }
@@ -92,7 +92,7 @@ bool Configuration::GetAttachDebugger() const
 	return Configuration::AttachDebugger;
 }
 
-void Configuration::SetAttachDebugger(bool val, bool suppress_events, const Value& cookie)
+void Configuration::SetAttachDebugger(bool val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("AttachDebugger", &Configuration::AttachDebugger, val, m_ReadOnly);
 }
@@ -102,7 +102,7 @@ String Configuration::GetCacheDir() const
 	return Configuration::CacheDir;
 }
 
-void Configuration::SetCacheDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetCacheDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("CacheDir", &Configuration::CacheDir, val, m_ReadOnly);
 }
@@ -112,7 +112,7 @@ int Configuration::GetConcurrency() const
 	return Configuration::Concurrency;
 }
 
-void Configuration::SetConcurrency(int val, bool suppress_events, const Value& cookie)
+void Configuration::SetConcurrency(int val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("Concurrency", &Configuration::Concurrency, val, m_ReadOnly);
 	Configuration::ConcurrencyWasModified = true;
@@ -123,7 +123,7 @@ String Configuration::GetConfigDir() const
 	return Configuration::ConfigDir;
 }
 
-void Configuration::SetConfigDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetConfigDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ConfigDir", &Configuration::ConfigDir, val, m_ReadOnly);
 }
@@ -133,7 +133,7 @@ String Configuration::GetDataDir() const
 	return Configuration::DataDir;
 }
 
-void Configuration::SetDataDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetDataDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("DataDir", &Configuration::DataDir, val, m_ReadOnly);
 }
@@ -143,7 +143,7 @@ String Configuration::GetEventEngine() const
 	return Configuration::EventEngine;
 }
 
-void Configuration::SetEventEngine(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetEventEngine(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("EventEngine", &Configuration::EventEngine, val, m_ReadOnly);
 }
@@ -153,7 +153,7 @@ String Configuration::GetIncludeConfDir() const
 	return Configuration::IncludeConfDir;
 }
 
-void Configuration::SetIncludeConfDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetIncludeConfDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("IncludeConfDir", &Configuration::IncludeConfDir, val, m_ReadOnly);
 }
@@ -163,7 +163,7 @@ String Configuration::GetInitRunDir() const
 	return Configuration::InitRunDir;
 }
 
-void Configuration::SetInitRunDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetInitRunDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("InitRunDir", &Configuration::InitRunDir, val, m_ReadOnly);
 }
@@ -173,7 +173,7 @@ String Configuration::GetLogDir() const
 	return Configuration::LogDir;
 }
 
-void Configuration::SetLogDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetLogDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("LogDir", &Configuration::LogDir, val, m_ReadOnly);
 }
@@ -183,7 +183,7 @@ String Configuration::GetModAttrPath() const
 	return Configuration::ModAttrPath;
 }
 
-void Configuration::SetModAttrPath(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetModAttrPath(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ModAttrPath", &Configuration::ModAttrPath, val, m_ReadOnly);
 }
@@ -193,7 +193,7 @@ String Configuration::GetObjectsPath() const
 	return Configuration::ObjectsPath;
 }
 
-void Configuration::SetObjectsPath(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetObjectsPath(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ObjectsPath", &Configuration::ObjectsPath, val, m_ReadOnly);
 }
@@ -203,7 +203,7 @@ String Configuration::GetPidPath() const
 	return Configuration::PidPath;
 }
 
-void Configuration::SetPidPath(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetPidPath(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("PidPath", &Configuration::PidPath, val, m_ReadOnly);
 }
@@ -213,7 +213,7 @@ String Configuration::GetPkgDataDir() const
 	return Configuration::PkgDataDir;
 }
 
-void Configuration::SetPkgDataDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetPkgDataDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("PkgDataDir", &Configuration::PkgDataDir, val, m_ReadOnly);
 }
@@ -223,7 +223,7 @@ String Configuration::GetPrefixDir() const
 	return Configuration::PrefixDir;
 }
 
-void Configuration::SetPrefixDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetPrefixDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("PrefixDir", &Configuration::PrefixDir, val, m_ReadOnly);
 }
@@ -233,7 +233,7 @@ String Configuration::GetProgramData() const
 	return Configuration::ProgramData;
 }
 
-void Configuration::SetProgramData(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetProgramData(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ProgramData", &Configuration::ProgramData, val, m_ReadOnly);
 }
@@ -243,7 +243,7 @@ int Configuration::GetRLimitFiles() const
 	return Configuration::RLimitFiles;
 }
 
-void Configuration::SetRLimitFiles(int val, bool suppress_events, const Value& cookie)
+void Configuration::SetRLimitFiles(int val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("RLimitFiles", &Configuration::RLimitFiles, val, m_ReadOnly);
 }
@@ -253,7 +253,7 @@ int Configuration::GetRLimitProcesses() const
 	return RLimitProcesses;
 }
 
-void Configuration::SetRLimitProcesses(int val, bool suppress_events, const Value& cookie)
+void Configuration::SetRLimitProcesses(int val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("RLimitProcesses", &Configuration::RLimitProcesses, val, m_ReadOnly);
 }
@@ -263,7 +263,7 @@ int Configuration::GetRLimitStack() const
 	return Configuration::RLimitStack;
 }
 
-void Configuration::SetRLimitStack(int val, bool suppress_events, const Value& cookie)
+void Configuration::SetRLimitStack(int val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("RLimitStack", &Configuration::RLimitStack, val, m_ReadOnly);
 }
@@ -273,7 +273,7 @@ String Configuration::GetRunAsGroup() const
 	return Configuration::RunAsGroup;
 }
 
-void Configuration::SetRunAsGroup(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetRunAsGroup(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("RunAsGroup", &Configuration::RunAsGroup, val, m_ReadOnly);
 }
@@ -283,7 +283,7 @@ String Configuration::GetRunAsUser() const
 	return Configuration::RunAsUser;
 }
 
-void Configuration::SetRunAsUser(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetRunAsUser(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("RunAsUser", &Configuration::RunAsUser, val, m_ReadOnly);
 }
@@ -293,7 +293,7 @@ String Configuration::GetSpoolDir() const
 	return Configuration::SpoolDir;
 }
 
-void Configuration::SetSpoolDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetSpoolDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("SpoolDir", &Configuration::SpoolDir, val, m_ReadOnly);
 }
@@ -303,7 +303,7 @@ String Configuration::GetStatePath() const
 	return Configuration::StatePath;
 }
 
-void Configuration::SetStatePath(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetStatePath(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("StatePath", &Configuration::StatePath, val, m_ReadOnly);
 }
@@ -313,7 +313,7 @@ double Configuration::GetTlsHandshakeTimeout() const
 	return Configuration::TlsHandshakeTimeout;
 }
 
-void Configuration::SetTlsHandshakeTimeout(double val, bool suppress_events, const Value& cookie)
+void Configuration::SetTlsHandshakeTimeout(double val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("TlsHandshakeTimeout", &Configuration::TlsHandshakeTimeout, val, m_ReadOnly);
 }
@@ -323,7 +323,7 @@ String Configuration::GetVarsPath() const
 	return Configuration::VarsPath;
 }
 
-void Configuration::SetVarsPath(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetVarsPath(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("VarsPath", &Configuration::VarsPath, val, m_ReadOnly);
 }
@@ -333,7 +333,7 @@ String Configuration::GetZonesDir() const
 	return Configuration::ZonesDir;
 }
 
-void Configuration::SetZonesDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetZonesDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("ZonesDir", &Configuration::ZonesDir, val, m_ReadOnly);
 }
@@ -343,7 +343,7 @@ String Configuration::GetLocalStateDir() const
 	return Configuration::LocalStateDir;
 }
 
-void Configuration::SetLocalStateDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetLocalStateDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("LocalStateDir", &Configuration::LocalStateDir, val, m_ReadOnly);
 }
@@ -353,7 +353,7 @@ String Configuration::GetSysconfDir() const
 	return Configuration::SysconfDir;
 }
 
-void Configuration::SetSysconfDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetSysconfDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("SysconfDir", &Configuration::SysconfDir, val, m_ReadOnly);
 }
@@ -363,7 +363,7 @@ String Configuration::GetRunDir() const
 	return Configuration::RunDir;
 }
 
-void Configuration::SetRunDir(const String& val, bool suppress_events, const Value& cookie)
+void Configuration::SetRunDir(const String& val, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	HandleUserWrite("RunDir", &Configuration::RunDir, val, m_ReadOnly);
 }
diff --git a/lib/base/io-engine.cpp b/lib/base/io-engine.cpp
index 81990865e37..9886dc3d586 100644
--- a/lib/base/io-engine.cpp
+++ b/lib/base/io-engine.cpp
@@ -97,7 +97,7 @@ IoEngine::IoEngine() : m_IoContext(), m_KeepAlive(boost::asio::make_work_guard(m
 
 IoEngine::~IoEngine()
 {
-	for (auto& thread : m_Threads) {
+	for ([[maybe_unused]] auto& thread : m_Threads) {
 		boost::asio::post(m_IoContext, []() {
 			throw TerminateIoThread();
 		});
diff --git a/lib/base/object.cpp b/lib/base/object.cpp
index 0c1e69e8e64..b9d3aee468a 100644
--- a/lib/base/object.cpp
+++ b/lib/base/object.cpp
@@ -150,22 +150,22 @@ void Object::SetFieldByName(const String& field, const Value& value, const Debug
 	}
 }
 
-void Object::Validate(int types, const ValidationUtils& utils)
+void Object::Validate([[maybe_unused]] int types, const ValidationUtils&)
 {
 	/* Nothing to do here. */
 }
 
-void Object::ValidateField(int id, const Lazy<Value>& lvalue, const ValidationUtils& utils)
+void Object::ValidateField([[maybe_unused]] int id, const Lazy<Value>&, const ValidationUtils&)
 {
 	/* Nothing to do here. */
 }
 
-void Object::NotifyField(int id, const Value& cookie)
+void Object::NotifyField([[maybe_unused]] int id, [[maybe_unused]] const Value& cookie)
 {
 	BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
 }
 
-Object::Ptr Object::NavigateField(int id) const
+Object::Ptr Object::NavigateField([[maybe_unused]] int id) const
 {
 	BOOST_THROW_EXCEPTION(std::runtime_error("Invalid field ID."));
 }
diff --git a/lib/base/scriptutils.cpp b/lib/base/scriptutils.cpp
index 0197051eabb..16e774fa9d7 100644
--- a/lib/base/scriptutils.cpp
+++ b/lib/base/scriptutils.cpp
@@ -508,7 +508,7 @@ void ScriptUtils::Assert(const Value& arg)
 		BOOST_THROW_EXCEPTION(std::runtime_error("Assertion failed"));
 }
 
-String ScriptUtils::MsiGetComponentPathShim(const String& component)
+String ScriptUtils::MsiGetComponentPathShim([[maybe_unused]] const String& component)
 {
 #ifdef _WIN32
 	TCHAR productCode[39];
diff --git a/lib/base/type.cpp b/lib/base/type.cpp
index f6539b7c447..25249b7f7e5 100644
--- a/lib/base/type.cpp
+++ b/lib/base/type.cpp
@@ -202,7 +202,7 @@ int Type::GetActivationPriority() const
 	return 0;
 }
 
-void Type::RegisterAttributeHandler(int fieldId, const AttributeHandler& callback)
+void Type::RegisterAttributeHandler([[maybe_unused]] int fieldId, const AttributeHandler&)
 {
 	throw std::runtime_error("Invalid field ID.");
 }
diff --git a/lib/base/typetype-script.cpp b/lib/base/typetype-script.cpp
index 5be124c94a0..6a07800c2d4 100644
--- a/lib/base/typetype-script.cpp
+++ b/lib/base/typetype-script.cpp
@@ -15,7 +15,7 @@ static void TypeRegisterAttributeHandler(const String& fieldName, const Function
 	REQUIRE_NOT_NULL(self);
 
 	int fid = self->GetFieldId(fieldName);
-	self->RegisterAttributeHandler(fid, [callback](const Object::Ptr& object, const Value& cookie) {
+	self->RegisterAttributeHandler(fid, [callback](const Object::Ptr& object, [[maybe_unused]] const Value& cookie) {
 		callback->Invoke({ object });
 	});
 }
diff --git a/lib/base/utility.cpp b/lib/base/utility.cpp
index adc7c31fb88..df1dae06349 100644
--- a/lib/base/utility.cpp
+++ b/lib/base/utility.cpp
@@ -430,7 +430,7 @@ static bool GlobHelper(const String& pathSpec, int type, std::vector<String>& fi
 #endif /* _WIN32 */
 
 #ifndef _WIN32
-static int GlobErrorHandler(const char *epath, int eerrno)
+static int GlobErrorHandler([[maybe_unused]] const char *epath, int eerrno)
 {
 	if (eerrno == ENOTDIR)
 		return 0;
diff --git a/lib/cli/apisetupcommand.cpp b/lib/cli/apisetupcommand.cpp
index 81b9d8db603..e97210c7dd3 100644
--- a/lib/cli/apisetupcommand.cpp
+++ b/lib/cli/apisetupcommand.cpp
@@ -28,7 +28,7 @@ ImpersonationLevel ApiSetupCommand::GetImpersonationLevel() const
 }
 
 void ApiSetupCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("cn", po::value<std::string>(), "The certificate's common name");
@@ -39,7 +39,7 @@ void ApiSetupCommand::InitParameters(boost::program_options::options_description
  *
  * @returns An exit status.
  */
-int ApiSetupCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int ApiSetupCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	String cn;
 
diff --git a/lib/cli/calistcommand.cpp b/lib/cli/calistcommand.cpp
index f693ad72fd7..cbb04539091 100644
--- a/lib/cli/calistcommand.cpp
+++ b/lib/cli/calistcommand.cpp
@@ -41,7 +41,7 @@ String CAListCommand::GetShortDescription() const
  * @param hiddenDesc Register hidden parameters.
  */
 void CAListCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("all", "List all certificate signing requests, including signed. Note: Old requests are automatically cleaned by Icinga after 1 week.")
@@ -54,7 +54,7 @@ void CAListCommand::InitParameters(boost::program_options::options_description&
  *
  * @return An exit status.
  */
-int CAListCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int CAListCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	Dictionary::Ptr requests = PkiUtility::GetCertificateRequests(vm.count("removed"));
 
diff --git a/lib/cli/caremovecommand.cpp b/lib/cli/caremovecommand.cpp
index d8944944eaf..894816d6f68 100644
--- a/lib/cli/caremovecommand.cpp
+++ b/lib/cli/caremovecommand.cpp
@@ -55,7 +55,7 @@ ImpersonationLevel CARemoveCommand::GetImpersonationLevel() const
  *
  * @returns An exit status.
  */
-int CARemoveCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int CARemoveCommand::Run(const boost::program_options::variables_map&, const std::vector<std::string>& ap) const
 {
 	String fingerPrint = ap[0];
 	String requestFile = ApiListener::GetCertificateRequestsDir() + "/" + fingerPrint + ".json";
diff --git a/lib/cli/carestorecommand.cpp b/lib/cli/carestorecommand.cpp
index 502036830e7..a1b1c5b7621 100644
--- a/lib/cli/carestorecommand.cpp
+++ b/lib/cli/carestorecommand.cpp
@@ -55,7 +55,7 @@ ImpersonationLevel CARestoreCommand::GetImpersonationLevel() const
  *
  * @returns An exit status.
  */
-int CARestoreCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int CARestoreCommand::Run(const boost::program_options::variables_map&, const std::vector<std::string>& ap) const
 {
 	String fingerPrint = ap[0];
 	String removedRequestFile = ApiListener::GetCertificateRequestsDir() + "/" + fingerPrint + ".removed";
diff --git a/lib/cli/casigncommand.cpp b/lib/cli/casigncommand.cpp
index 96d2c2c870f..789e1f5db73 100644
--- a/lib/cli/casigncommand.cpp
+++ b/lib/cli/casigncommand.cpp
@@ -55,7 +55,7 @@ ImpersonationLevel CASignCommand::GetImpersonationLevel() const
  *
  * @return An exit status.
  */
-int CASignCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int CASignCommand::Run(const boost::program_options::variables_map&, const std::vector<std::string>& ap) const
 {
 	String requestFile = ApiListener::GetCertificateRequestsDir() + "/" + ap[0] + ".json";
 
diff --git a/lib/cli/clicommand.cpp b/lib/cli/clicommand.cpp
index 16acc174573..2621d32b8e6 100644
--- a/lib/cli/clicommand.cpp
+++ b/lib/cli/clicommand.cpp
@@ -131,18 +131,18 @@ void CLICommand::Unregister(const std::vector<String>& name)
 	GetRegistry().erase(name);
 }
 
-std::vector<String> CLICommand::GetArgumentSuggestions(const String& argument, const String& word) const
+std::vector<String> CLICommand::GetArgumentSuggestions([[maybe_unused]] const String& argument, [[maybe_unused]] const String& word) const
 {
 	return std::vector<String>();
 }
 
-std::vector<String> CLICommand::GetPositionalSuggestions(const String& word) const
+std::vector<String> CLICommand::GetPositionalSuggestions([[maybe_unused]] const String& word) const
 {
 	return std::vector<String>();
 }
 
-void CLICommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+void CLICommand::InitParameters([[maybe_unused]] boost::program_options::options_description& visibleDesc,
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 { }
 
 ImpersonationLevel CLICommand::GetImpersonationLevel() const
diff --git a/lib/cli/consolecommand.cpp b/lib/cli/consolecommand.cpp
index 78906bb2a74..34ee4c13b4e 100644
--- a/lib/cli/consolecommand.cpp
+++ b/lib/cli/consolecommand.cpp
@@ -167,7 +167,7 @@ ImpersonationLevel ConsoleCommand::GetImpersonationLevel() const
 }
 
 void ConsoleCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("connect,c", po::value<std::string>(), "connect to an Icinga 2 instance")
@@ -215,7 +215,7 @@ char *ConsoleCommand::ConsoleCompleteHelper(const char *word, int state)
  *
  * @returns An exit status.
  */
-int ConsoleCommand::Run(const po::variables_map& vm, const std::vector<std::string>& ap) const
+int ConsoleCommand::Run(const po::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 #ifdef HAVE_EDITLINE
 	rl_completion_entry_function = ConsoleCommand::ConsoleCompleteHelper;
diff --git a/lib/cli/daemoncommand.cpp b/lib/cli/daemoncommand.cpp
index 709b64f88da..46273aae188 100644
--- a/lib/cli/daemoncommand.cpp
+++ b/lib/cli/daemoncommand.cpp
@@ -46,13 +46,18 @@ static po::variables_map g_AppParams;
 
 REGISTER_CLICOMMAND("daemon", DaemonCommand);
 
+#ifdef HAVE_SYSTEMD
 static inline
 void NotifyStatus(const char* status)
 {
-#ifdef HAVE_SYSTEMD
 	(void)sd_notifyf(0, "STATUS=%s", status);
-#endif /* HAVE_SYSTEMD */
 }
+#else /* HAVE_SYSTEMD */
+static inline
+void NotifyStatus(const char*)
+{
+}
+#endif /* HAVE_SYSTEMD */
 
 /*
  * Daemonize().  On error, this function logs by itself and exits (i.e. does not return).
@@ -171,7 +176,7 @@ String DaemonCommand::GetShortDescription() const
 }
 
 void DaemonCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("config,c", po::value<std::vector<std::string> >(), "parse a configuration file")
@@ -614,7 +619,7 @@ class PidFileManagementApp : public Application
  *
  * @returns An exit status.
  */
-int DaemonCommand::Run(const po::variables_map& vm, const std::vector<std::string>& ap) const
+int DaemonCommand::Run(const po::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 #ifdef _WIN32
 	SetConsoleOutputCP(65001);
diff --git a/lib/cli/featuredisablecommand.cpp b/lib/cli/featuredisablecommand.cpp
index 95a4a26d77d..6fb6045fa9c 100644
--- a/lib/cli/featuredisablecommand.cpp
+++ b/lib/cli/featuredisablecommand.cpp
@@ -44,7 +44,7 @@ ImpersonationLevel FeatureDisableCommand::GetImpersonationLevel() const
  *
  * @returns An exit status.
  */
-int FeatureDisableCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int FeatureDisableCommand::Run(const boost::program_options::variables_map&, const std::vector<std::string>& ap) const
 {
 	if (ap.empty()) {
 		Log(LogCritical, "cli", "Cannot disable feature(s). Name(s) are missing!");
diff --git a/lib/cli/featureenablecommand.cpp b/lib/cli/featureenablecommand.cpp
index 0cf906648e4..211c2fbcaf4 100644
--- a/lib/cli/featureenablecommand.cpp
+++ b/lib/cli/featureenablecommand.cpp
@@ -44,7 +44,7 @@ ImpersonationLevel FeatureEnableCommand::GetImpersonationLevel() const
  *
  * @returns An exit status.
  */
-int FeatureEnableCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int FeatureEnableCommand::Run(const boost::program_options::variables_map&, const std::vector<std::string>& ap) const
 {
 	return FeatureUtility::EnableFeatures(ap);
 }
diff --git a/lib/cli/featurelistcommand.cpp b/lib/cli/featurelistcommand.cpp
index 2aad4a9cd10..f5442115bd1 100644
--- a/lib/cli/featurelistcommand.cpp
+++ b/lib/cli/featurelistcommand.cpp
@@ -28,7 +28,7 @@ String FeatureListCommand::GetShortDescription() const
  *
  * @returns An exit status.
  */
-int FeatureListCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int FeatureListCommand::Run(const boost::program_options::variables_map&, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	return FeatureUtility::ListFeatures();
 }
diff --git a/lib/cli/internalsignalcommand.cpp b/lib/cli/internalsignalcommand.cpp
index 201a5119ca9..30404bbe29c 100644
--- a/lib/cli/internalsignalcommand.cpp
+++ b/lib/cli/internalsignalcommand.cpp
@@ -30,7 +30,7 @@ bool InternalSignalCommand::IsHidden() const
 }
 
 void InternalSignalCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("pid,p", po::value<int>(), "Target PID")
@@ -43,7 +43,7 @@ void InternalSignalCommand::InitParameters(boost::program_options::options_descr
  *
  * @returns An exit status.
  */
-int InternalSignalCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int InternalSignalCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 #ifndef _WIN32
 	String signal = vm["sig"].as<String>();
diff --git a/lib/cli/nodewizardcommand.cpp b/lib/cli/nodewizardcommand.cpp
index c6874a5af88..310c23b561e 100644
--- a/lib/cli/nodewizardcommand.cpp
+++ b/lib/cli/nodewizardcommand.cpp
@@ -47,7 +47,7 @@ int NodeWizardCommand::GetMaxArguments() const
 }
 
 void NodeWizardCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("verbose", "increase log level");
@@ -59,7 +59,7 @@ void NodeWizardCommand::InitParameters(boost::program_options::options_descripti
  * @returns An exit status.
  */
 int NodeWizardCommand::Run(const boost::program_options::variables_map& vm,
-	const std::vector<std::string>& ap) const
+	[[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	if (!vm.count("verbose"))
 		Logger::SetConsoleLogSeverity(LogCritical);
diff --git a/lib/cli/objectlistcommand.cpp b/lib/cli/objectlistcommand.cpp
index 3bcb31512cd..6eef7ac8286 100644
--- a/lib/cli/objectlistcommand.cpp
+++ b/lib/cli/objectlistcommand.cpp
@@ -36,7 +36,7 @@ String ObjectListCommand::GetShortDescription() const
 }
 
 void ObjectListCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("count,c", "display object counts by types")
@@ -62,7 +62,7 @@ static time_t GetCtime(const String& path)
  *
  * @returns An exit status.
  */
-int ObjectListCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int ObjectListCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	String objectfile = Configuration::ObjectsPath;
 
diff --git a/lib/cli/pkinewcacommand.cpp b/lib/cli/pkinewcacommand.cpp
index eba08c69f4e..eaaf73fa32f 100644
--- a/lib/cli/pkinewcacommand.cpp
+++ b/lib/cli/pkinewcacommand.cpp
@@ -23,7 +23,7 @@ String PKINewCACommand::GetShortDescription() const
  *
  * @returns An exit status.
  */
-int PKINewCACommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKINewCACommand::Run(const boost::program_options::variables_map&, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	return PkiUtility::NewCa();
 }
diff --git a/lib/cli/pkinewcertcommand.cpp b/lib/cli/pkinewcertcommand.cpp
index 5201d923951..afb5475d6dc 100644
--- a/lib/cli/pkinewcertcommand.cpp
+++ b/lib/cli/pkinewcertcommand.cpp
@@ -20,7 +20,7 @@ String PKINewCertCommand::GetShortDescription() const
 }
 
 void PKINewCertCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("cn", po::value<std::string>(), "Common Name")
@@ -42,7 +42,7 @@ std::vector<String> PKINewCertCommand::GetArgumentSuggestions(const String& argu
  *
  * @returns An exit status.
  */
-int PKINewCertCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKINewCertCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	if (!vm.count("cn")) {
 		Log(LogCritical, "cli", "Common name (--cn) must be specified.");
diff --git a/lib/cli/pkirequestcommand.cpp b/lib/cli/pkirequestcommand.cpp
index d2b79f0a969..865533b85c6 100644
--- a/lib/cli/pkirequestcommand.cpp
+++ b/lib/cli/pkirequestcommand.cpp
@@ -22,7 +22,7 @@ String PKIRequestCommand::GetShortDescription() const
 }
 
 void PKIRequestCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("key", po::value<std::string>(), "Key file path (input)")
@@ -51,7 +51,7 @@ std::vector<String> PKIRequestCommand::GetArgumentSuggestions(const String& argu
  *
  * @returns An exit status.
  */
-int PKIRequestCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKIRequestCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	if (!vm.count("host")) {
 		Log(LogCritical, "cli", "Icinga 2 host (--host) must be specified.");
diff --git a/lib/cli/pkisavecertcommand.cpp b/lib/cli/pkisavecertcommand.cpp
index befd0eead60..9910fa48d30 100644
--- a/lib/cli/pkisavecertcommand.cpp
+++ b/lib/cli/pkisavecertcommand.cpp
@@ -52,7 +52,7 @@ std::vector<String> PKISaveCertCommand::GetArgumentSuggestions(const String& arg
  *
  * @returns An exit status.
  */
-int PKISaveCertCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKISaveCertCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	if (!vm.count("host")) {
 		Log(LogCritical, "cli", "Icinga 2 host (--host) must be specified.");
diff --git a/lib/cli/pkisigncsrcommand.cpp b/lib/cli/pkisigncsrcommand.cpp
index ce1427bcd19..ab645c547b9 100644
--- a/lib/cli/pkisigncsrcommand.cpp
+++ b/lib/cli/pkisigncsrcommand.cpp
@@ -20,7 +20,7 @@ String PKISignCSRCommand::GetShortDescription() const
 }
 
 void PKISignCSRCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("csr", po::value<std::string>(), "CSR file path (input)")
@@ -40,7 +40,7 @@ std::vector<String> PKISignCSRCommand::GetArgumentSuggestions(const String& argu
  *
  * @returns An exit status.
  */
-int PKISignCSRCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKISignCSRCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	if (!vm.count("csr")) {
 		Log(LogCritical, "cli", "Certificate signing request file path (--csr) must be specified.");
diff --git a/lib/cli/pkiticketcommand.cpp b/lib/cli/pkiticketcommand.cpp
index 82f3586f062..c4002c13e6d 100644
--- a/lib/cli/pkiticketcommand.cpp
+++ b/lib/cli/pkiticketcommand.cpp
@@ -22,7 +22,7 @@ String PKITicketCommand::GetShortDescription() const
 }
 
 void PKITicketCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("cn", po::value<std::string>(), "Certificate common name")
@@ -34,7 +34,7 @@ void PKITicketCommand::InitParameters(boost::program_options::options_descriptio
  *
  * @returns An exit status.
  */
-int PKITicketCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKITicketCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	if (!vm.count("cn")) {
 		Log(LogCritical, "cli", "Common name (--cn) must be specified.");
diff --git a/lib/cli/pkiverifycommand.cpp b/lib/cli/pkiverifycommand.cpp
index 963903a2114..791e07c81b4 100644
--- a/lib/cli/pkiverifycommand.cpp
+++ b/lib/cli/pkiverifycommand.cpp
@@ -23,7 +23,7 @@ String PKIVerifyCommand::GetShortDescription() const
 }
 
 void PKIVerifyCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("cn", po::value<std::string>(), "Common Name (optional). Use with '--cert' to check the CN in the certificate.")
@@ -45,7 +45,7 @@ std::vector<String> PKIVerifyCommand::GetArgumentSuggestions(const String& argum
  *
  * @returns An exit status.
  */
-int PKIVerifyCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int PKIVerifyCommand::Run(const boost::program_options::variables_map& vm, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	String cn, certFile, caCertFile, crlFile;
 
diff --git a/lib/cli/variablegetcommand.cpp b/lib/cli/variablegetcommand.cpp
index c05ac965acc..3c843a380d0 100644
--- a/lib/cli/variablegetcommand.cpp
+++ b/lib/cli/variablegetcommand.cpp
@@ -35,7 +35,7 @@ String VariableGetCommand::GetShortDescription() const
 }
 
 void VariableGetCommand::InitParameters(boost::program_options::options_description& visibleDesc,
-	boost::program_options::options_description& hiddenDesc) const
+	[[maybe_unused]] boost::program_options::options_description& hiddenDesc) const
 {
 	visibleDesc.add_options()
 		("current", "Uses the current value (i.e. from the running process, rather than from the vars file)");
diff --git a/lib/cli/variablelistcommand.cpp b/lib/cli/variablelistcommand.cpp
index 5ec1919c070..fd666c57d92 100644
--- a/lib/cli/variablelistcommand.cpp
+++ b/lib/cli/variablelistcommand.cpp
@@ -34,7 +34,7 @@ String VariableListCommand::GetShortDescription() const
  *
  * @returns An exit status.
  */
-int VariableListCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
+int VariableListCommand::Run(const boost::program_options::variables_map&, [[maybe_unused]] const std::vector<std::string>& ap) const
 {
 	String varsfile = Configuration::VarsPath;
 
diff --git a/lib/config/expression.cpp b/lib/config/expression.cpp
index b2138698b9f..6cf8bf3e461 100644
--- a/lib/config/expression.cpp
+++ b/lib/config/expression.cpp
@@ -63,7 +63,7 @@ ExpressionResult Expression::Evaluate(ScriptFrame& frame, DebugHint *dhint) cons
 	}
 }
 
-bool Expression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
+bool Expression::GetReference(ScriptFrame&, [[maybe_unused]] bool init_dict, [[maybe_unused]] Value* parent, [[maybe_unused]] String* index, DebugHint**) const
 {
 	return false;
 }
@@ -89,7 +89,7 @@ LiteralExpression::LiteralExpression(Value value)
 	: m_Value(std::move(value))
 { }
 
-ExpressionResult LiteralExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult LiteralExpression::DoEvaluate(ScriptFrame&, DebugHint*) const
 {
 	return m_Value;
 }
@@ -108,7 +108,7 @@ VariableExpression::VariableExpression(String variable, std::vector<Expression::
 	m_Imports.push_back(MakeIndexer(ScopeGlobal, "Icinga").release());
 }
 
-ExpressionResult VariableExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult VariableExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	Value value;
 
@@ -124,7 +124,7 @@ ExpressionResult VariableExpression::DoEvaluate(ScriptFrame& frame, DebugHint *d
 	BOOST_THROW_EXCEPTION(ScriptError{"Tried to access undefined script variable '" + m_Variable + "'"});
 }
 
-bool VariableExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
+bool VariableExpression::GetReference(ScriptFrame& frame, [[maybe_unused]] bool init_dict, Value *parent, String *index, DebugHint **dhint) const
 {
 	*index = m_Variable;
 
@@ -165,7 +165,7 @@ ExpressionResult RefExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint)
 	return new Reference(parent, index);
 }
 
-ExpressionResult DerefExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult DerefExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand = m_Operand->Evaluate(frame);
 	CHECK_RESULT(operand);
@@ -179,7 +179,7 @@ ExpressionResult DerefExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhin
 	return ref->Get();
 }
 
-bool DerefExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *parent, String *index, DebugHint **dhint) const
+bool DerefExpression::GetReference(ScriptFrame& frame, [[maybe_unused]] bool init_dict, Value *parent, String *index, DebugHint**) const
 {
 	ExpressionResult operand = m_Operand->Evaluate(frame);
 	if (operand.GetCode() != ResultOK)
@@ -196,7 +196,7 @@ bool DerefExpression::GetReference(ScriptFrame& frame, bool init_dict, Value *pa
 	return true;
 }
 
-ExpressionResult NegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult NegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand = m_Operand->Evaluate(frame);
 	CHECK_RESULT(operand);
@@ -204,7 +204,7 @@ ExpressionResult NegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhi
 	return ~(long)operand.GetValue();
 }
 
-ExpressionResult LogicalNegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult LogicalNegateExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand = m_Operand->Evaluate(frame);
 	CHECK_RESULT(operand);
@@ -212,7 +212,7 @@ ExpressionResult LogicalNegateExpression::DoEvaluate(ScriptFrame& frame, DebugHi
 	return !operand.GetValue().ToBool();
 }
 
-ExpressionResult AddExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult AddExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -223,7 +223,7 @@ ExpressionResult AddExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint)
 	return operand1.GetValue() + operand2.GetValue();
 }
 
-ExpressionResult SubtractExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult SubtractExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -234,7 +234,7 @@ ExpressionResult SubtractExpression::DoEvaluate(ScriptFrame& frame, DebugHint *d
 	return operand1.GetValue() - operand2.GetValue();
 }
 
-ExpressionResult MultiplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult MultiplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -245,7 +245,7 @@ ExpressionResult MultiplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint *d
 	return operand1.GetValue() * operand2.GetValue();
 }
 
-ExpressionResult DivideExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult DivideExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -256,7 +256,7 @@ ExpressionResult DivideExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhi
 	return operand1.GetValue() / operand2.GetValue();
 }
 
-ExpressionResult ModuloExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ModuloExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -267,7 +267,7 @@ ExpressionResult ModuloExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhi
 	return operand1.GetValue() % operand2.GetValue();
 }
 
-ExpressionResult XorExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult XorExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -278,7 +278,7 @@ ExpressionResult XorExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint)
 	return operand1.GetValue() ^ operand2.GetValue();
 }
 
-ExpressionResult BinaryAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult BinaryAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -289,7 +289,7 @@ ExpressionResult BinaryAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint *
 	return operand1.GetValue() & operand2.GetValue();
 }
 
-ExpressionResult BinaryOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult BinaryOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -300,7 +300,7 @@ ExpressionResult BinaryOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint *d
 	return operand1.GetValue() | operand2.GetValue();
 }
 
-ExpressionResult ShiftLeftExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ShiftLeftExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -311,7 +311,7 @@ ExpressionResult ShiftLeftExpression::DoEvaluate(ScriptFrame& frame, DebugHint *
 	return operand1.GetValue() << operand2.GetValue();
 }
 
-ExpressionResult ShiftRightExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ShiftRightExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -322,7 +322,7 @@ ExpressionResult ShiftRightExpression::DoEvaluate(ScriptFrame& frame, DebugHint
 	return operand1.GetValue() >> operand2.GetValue();
 }
 
-ExpressionResult EqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult EqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -333,7 +333,7 @@ ExpressionResult EqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhin
 	return operand1.GetValue() == operand2.GetValue();
 }
 
-ExpressionResult NotEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult NotEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -344,7 +344,7 @@ ExpressionResult NotEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *d
 	return operand1.GetValue() != operand2.GetValue();
 }
 
-ExpressionResult LessThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult LessThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -355,7 +355,7 @@ ExpressionResult LessThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint *d
 	return operand1.GetValue() < operand2.GetValue();
 }
 
-ExpressionResult GreaterThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult GreaterThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -366,7 +366,7 @@ ExpressionResult GreaterThanExpression::DoEvaluate(ScriptFrame& frame, DebugHint
 	return operand1.GetValue() > operand2.GetValue();
 }
 
-ExpressionResult LessThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult LessThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -377,7 +377,7 @@ ExpressionResult LessThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, Debug
 	return operand1.GetValue() <= operand2.GetValue();
 }
 
-ExpressionResult GreaterThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult GreaterThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -388,7 +388,7 @@ ExpressionResult GreaterThanOrEqualExpression::DoEvaluate(ScriptFrame& frame, De
 	return operand1.GetValue() >= operand2.GetValue();
 }
 
-ExpressionResult InExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult InExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand2 = m_Operand2->Evaluate(frame);
 	CHECK_RESULT(operand2);
@@ -405,7 +405,7 @@ ExpressionResult InExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint)
 	return arr->Contains(operand1.GetValue());
 }
 
-ExpressionResult NotInExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult NotInExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand2 = m_Operand2->Evaluate(frame);
 	CHECK_RESULT(operand2);
@@ -422,7 +422,7 @@ ExpressionResult NotInExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhin
 	return !arr->Contains(operand1.GetValue());
 }
 
-ExpressionResult LogicalAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult LogicalAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -437,7 +437,7 @@ ExpressionResult LogicalAndExpression::DoEvaluate(ScriptFrame& frame, DebugHint
 	}
 }
 
-ExpressionResult LogicalOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult LogicalOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand1 = m_Operand1->Evaluate(frame);
 	CHECK_RESULT(operand1);
@@ -452,7 +452,7 @@ ExpressionResult LogicalOrExpression::DoEvaluate(ScriptFrame& frame, DebugHint *
 	}
 }
 
-ExpressionResult FunctionCallExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult FunctionCallExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	Value self, vfunc;
 	String index;
@@ -499,7 +499,7 @@ ExpressionResult FunctionCallExpression::DoEvaluate(ScriptFrame& frame, DebugHin
 	return VMOps::FunctionCall(self, func, arguments);
 }
 
-ExpressionResult ArrayExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ArrayExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ArrayData result;
 	result.reserve(m_Expressions.size());
@@ -545,7 +545,7 @@ ExpressionResult DictExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint
 	}
 }
 
-ExpressionResult GetScopeExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult GetScopeExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	if (m_ScopeSpec == ScopeLocal)
 		return frame.Locals;
@@ -672,7 +672,7 @@ ExpressionResult SetExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint)
 	return Empty;
 }
 
-ExpressionResult SetConstExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult SetConstExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	auto globals = ScriptGlobal::GetGlobals();
 
@@ -717,7 +717,7 @@ ExpressionResult WhileExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhin
 	return Empty;
 }
 
-ExpressionResult ReturnExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ReturnExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult operand = m_Operand->Evaluate(frame);
 	CHECK_RESULT(operand);
@@ -725,12 +725,12 @@ ExpressionResult ReturnExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhi
 	return ExpressionResult(operand.GetValue(), ResultReturn);
 }
 
-ExpressionResult BreakExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult BreakExpression::DoEvaluate(ScriptFrame&, DebugHint*) const
 {
 	return ExpressionResult(Empty, ResultBreak);
 }
 
-ExpressionResult ContinueExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ContinueExpression::DoEvaluate(ScriptFrame&, DebugHint*) const
 {
 	return ExpressionResult(Empty, ResultContinue);
 }
@@ -840,7 +840,7 @@ void icinga::BindToScope(std::unique_ptr<Expression>& expr, ScopeSpecifier scope
 	}
 }
 
-ExpressionResult ThrowExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ThrowExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ExpressionResult messageres = m_Message->Evaluate(frame);
 	CHECK_RESULT(messageres);
@@ -898,12 +898,12 @@ ExpressionResult ImportDefaultTemplatesExpression::DoEvaluate(ScriptFrame& frame
 	return Empty;
 }
 
-ExpressionResult FunctionExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult FunctionExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	return VMOps::NewFunction(frame, m_Name, m_Args, m_ClosedVars, m_Expression);
 }
 
-ExpressionResult ApplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult ApplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	if (frame.Sandboxed)
 		BOOST_THROW_EXCEPTION(ScriptError("Apply rules are not allowed in sandbox mode.", m_DebugInfo));
@@ -915,7 +915,7 @@ ExpressionResult ApplyExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhin
 		m_Package, m_FKVar, m_FVVar, m_FTerm, m_ClosedVars, m_IgnoreOnError, m_Expression, m_DebugInfo);
 }
 
-ExpressionResult NamespaceExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult NamespaceExpression::DoEvaluate(ScriptFrame&, DebugHint*) const
 {
 	Namespace::Ptr ns = new Namespace(true);
 
@@ -1042,7 +1042,7 @@ ExpressionResult IncludeExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dh
 	return res;
 }
 
-ExpressionResult BreakpointExpression::DoEvaluate(ScriptFrame& frame, DebugHint *dhint) const
+ExpressionResult BreakpointExpression::DoEvaluate(ScriptFrame& frame, DebugHint*) const
 {
 	ScriptBreakpoint(frame, nullptr, GetDebugInfo());
 
diff --git a/lib/icinga/apiactions.cpp b/lib/icinga/apiactions.cpp
index e7c2e35109e..3bc1dcc9e4e 100644
--- a/lib/icinga/apiactions.cpp
+++ b/lib/icinga/apiactions.cpp
@@ -588,16 +588,16 @@ Dictionary::Ptr ApiActions::RemoveDowntime(const ConfigObject::Ptr& object,
 	}
 }
 
-Dictionary::Ptr ApiActions::ShutdownProcess(const ConfigObject::Ptr& object,
-	const Dictionary::Ptr& params)
+Dictionary::Ptr ApiActions::ShutdownProcess(const ConfigObject::Ptr&,
+	[[maybe_unused]] const Dictionary::Ptr& params)
 {
 	Application::RequestShutdown();
 
 	return ApiActions::CreateResult(200, "Shutting down Icinga 2.");
 }
 
-Dictionary::Ptr ApiActions::RestartProcess(const ConfigObject::Ptr& object,
-	const Dictionary::Ptr& params)
+Dictionary::Ptr ApiActions::RestartProcess(const ConfigObject::Ptr&,
+	[[maybe_unused]] const Dictionary::Ptr& params)
 {
 	Application::RequestRestart();
 
diff --git a/lib/icinga/apievents.cpp b/lib/icinga/apievents.cpp
index 53008fdb18d..c80ac942eef 100644
--- a/lib/icinga/apievents.cpp
+++ b/lib/icinga/apievents.cpp
@@ -34,7 +34,7 @@ void ApiEvents::StaticInitialize()
 	ConfigObject::OnVersionChanged.connect(&ApiEvents::OnVersionChangedHandler);
 }
 
-void ApiEvents::CheckResultHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr, const MessageOrigin::Ptr& origin)
+void ApiEvents::CheckResultHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr, const MessageOrigin::Ptr&)
 {
 	std::vector<EventQueue::Ptr> queues = EventQueue::GetQueuesForType("CheckResult");
 	auto inboxes (EventsRouter::GetInstance().GetInboxes(EventType::CheckResult));
@@ -68,7 +68,7 @@ void ApiEvents::CheckResultHandler(const Checkable::Ptr& checkable, const CheckR
 	inboxes.Push(std::move(result));
 }
 
-void ApiEvents::StateChangeHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr, StateType type, const MessageOrigin::Ptr& origin)
+void ApiEvents::StateChangeHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr, StateType, const MessageOrigin::Ptr&)
 {
 	std::vector<EventQueue::Ptr> queues = EventQueue::GetQueuesForType("StateChange");
 	auto inboxes (EventsRouter::GetInstance().GetInboxes(EventType::StateChange));
@@ -106,7 +106,7 @@ void ApiEvents::StateChangeHandler(const Checkable::Ptr& checkable, const CheckR
 
 void ApiEvents::NotificationSentToAllUsersHandler(const Notification::Ptr& notification,
 	const Checkable::Ptr& checkable, const std::set<User::Ptr>& users, NotificationType type,
-	const CheckResult::Ptr& cr, const String& author, const String& text, const MessageOrigin::Ptr& origin)
+	const CheckResult::Ptr& cr, const String& author, const String& text, const MessageOrigin::Ptr&)
 {
 	std::vector<EventQueue::Ptr> queues = EventQueue::GetQueuesForType("Notification");
 	auto inboxes (EventsRouter::GetInstance().GetInboxes(EventType::Notification));
@@ -152,7 +152,7 @@ void ApiEvents::NotificationSentToAllUsersHandler(const Notification::Ptr& notif
 	inboxes.Push(std::move(result));
 }
 
-void ApiEvents::FlappingChangedHandler(const Checkable::Ptr& checkable, const MessageOrigin::Ptr& origin)
+void ApiEvents::FlappingChangedHandler(const Checkable::Ptr& checkable, const MessageOrigin::Ptr&)
 {
 	std::vector<EventQueue::Ptr> queues = EventQueue::GetQueuesForType("Flapping");
 	auto inboxes (EventsRouter::GetInstance().GetInboxes(EventType::Flapping));
@@ -190,7 +190,7 @@ void ApiEvents::FlappingChangedHandler(const Checkable::Ptr& checkable, const Me
 
 void ApiEvents::AcknowledgementSetHandler(const Checkable::Ptr& checkable,
 	const String& author, const String& comment, AcknowledgementType type,
-	bool notify, bool persistent, double, double expiry, const MessageOrigin::Ptr& origin)
+	bool notify, bool persistent, double, double expiry, const MessageOrigin::Ptr&)
 {
 	std::vector<EventQueue::Ptr> queues = EventQueue::GetQueuesForType("AcknowledgementSet");
 	auto inboxes (EventsRouter::GetInstance().GetInboxes(EventType::AcknowledgementSet));
@@ -229,7 +229,7 @@ void ApiEvents::AcknowledgementSetHandler(const Checkable::Ptr& checkable,
 	inboxes.Push(std::move(result));
 }
 
-void ApiEvents::AcknowledgementClearedHandler(const Checkable::Ptr& checkable, const String& removedBy, double, const MessageOrigin::Ptr& origin)
+void ApiEvents::AcknowledgementClearedHandler(const Checkable::Ptr& checkable, [[maybe_unused]] const String& removedBy, double, const MessageOrigin::Ptr&)
 {
 	std::vector<EventQueue::Ptr> queues = EventQueue::GetQueuesForType("AcknowledgementCleared");
 	auto inboxes (EventsRouter::GetInstance().GetInboxes(EventType::AcknowledgementCleared));
diff --git a/lib/icinga/cib.cpp b/lib/icinga/cib.cpp
index ce71a59924a..ef7cd066c29 100644
--- a/lib/icinga/cib.cpp
+++ b/lib/icinga/cib.cpp
@@ -277,7 +277,7 @@ std::pair<Dictionary::Ptr, Array::Ptr> CIB::GetFeatureStats()
 
 REGISTER_STATSFUNCTION(CIB, &CIB::StatsFunc);
 
-void CIB::StatsFunc(const Dictionary::Ptr& status, const Array::Ptr& perfdata) {
+void CIB::StatsFunc(const Dictionary::Ptr& status, [[maybe_unused]] const Array::Ptr& perfdata) {
 	double interval = Utility::GetTime() - Application::GetStartTime();
 
 	if (interval > 60)
diff --git a/lib/icinga/customvarobject.cpp b/lib/icinga/customvarobject.cpp
index 0edc369d90d..ed64585fb08 100644
--- a/lib/icinga/customvarobject.cpp
+++ b/lib/icinga/customvarobject.cpp
@@ -12,7 +12,7 @@ using namespace icinga;
 
 REGISTER_TYPE(CustomVarObject);
 
-void CustomVarObject::ValidateVars(const Lazy<Dictionary::Ptr>& lvalue, const ValidationUtils& utils)
+void CustomVarObject::ValidateVars(const Lazy<Dictionary::Ptr>& lvalue, const ValidationUtils&)
 {
 	MacroProcessor::ValidateCustomVars(this, lvalue());
 }
diff --git a/lib/icinga/icingaapplication.cpp b/lib/icinga/icingaapplication.cpp
index 94ae0ede71a..abbc3a56623 100644
--- a/lib/icinga/icingaapplication.cpp
+++ b/lib/icinga/icingaapplication.cpp
@@ -71,7 +71,7 @@ INITIALIZE_ONCE_WITH_PRIORITY([]() {
 
 REGISTER_STATSFUNCTION(IcingaApplication, &IcingaApplication::StatsFunc);
 
-void IcingaApplication::StatsFunc(const Dictionary::Ptr& status, const Array::Ptr& perfdata)
+void IcingaApplication::StatsFunc(const Dictionary::Ptr& status, [[maybe_unused]] const Array::Ptr& perfdata)
 {
 	DictionaryData nodes;
 
@@ -310,12 +310,12 @@ String IcingaApplication::GetEnvironment() const
 	return Application::GetAppEnvironment();
 }
 
-void IcingaApplication::SetEnvironment(const String& value, bool suppress_events, const Value& cookie)
+void IcingaApplication::SetEnvironment(const String& value, [[maybe_unused]] bool suppress_event, [[maybe_unused]] const Value& cookie)
 {
 	Application::SetAppEnvironment(value);
 }
 
-void IcingaApplication::ValidateVars(const Lazy<Dictionary::Ptr>& lvalue, const ValidationUtils& utils)
+void IcingaApplication::ValidateVars(const Lazy<Dictionary::Ptr>& lvalue, const ValidationUtils&)
 {
 	MacroProcessor::ValidateCustomVars(this, lvalue());
 }
diff --git a/lib/icingadb/icingadb-objects.cpp b/lib/icingadb/icingadb-objects.cpp
index 0d568a3cc1a..26aa58b9267 100644
--- a/lib/icingadb/icingadb-objects.cpp
+++ b/lib/icingadb/icingadb-objects.cpp
@@ -529,7 +529,7 @@ void IcingaDB::UpdateAllConfigObjects()
 
 	// enqueue a callback that will notify us once all previous queries were executed and wait for this event
 	std::promise<void> p;
-	m_Rcon->EnqueueCallback([&p](boost::asio::yield_context& yc) { p.set_value(); }, Prio::Config);
+	m_Rcon->EnqueueCallback([&p](boost::asio::yield_context&) { p.set_value(); }, Prio::Config);
 	p.get_future().wait();
 
 	auto endTime (Utility::GetTime());
diff --git a/lib/icingadb/icingadb.cpp b/lib/icingadb/icingadb.cpp
index 8d3b9099bd7..0b0786d56af 100644
--- a/lib/icingadb/icingadb.cpp
+++ b/lib/icingadb/icingadb.cpp
@@ -95,7 +95,7 @@ void IcingaDB::Start(bool runtimeCreated)
 			GetEnableTls(), GetInsecureNoverify(), GetCertPath(), GetKeyPath(), GetCaPath(), GetCrlPath(),
 			GetTlsProtocolmin(), GetCipherList(), GetConnectTimeout(), GetDebugInfo(), m_Rcon);
 
-		con->SetConnectedCallback([this, con](boost::asio::yield_context& yc) {
+		con->SetConnectedCallback([this, con](boost::asio::yield_context&) {
 			con->SetConnectedCallback(nullptr);
 
 			size_t pending = --m_PendingRcons;
@@ -110,7 +110,7 @@ void IcingaDB::Start(bool runtimeCreated)
 
 	m_PendingRcons = m_Rcons.size();
 
-	m_Rcon->SetConnectedCallback([this](boost::asio::yield_context& yc) {
+	m_Rcon->SetConnectedCallback([this](boost::asio::yield_context&) {
 		m_Rcon->SetConnectedCallback(nullptr);
 
 		for (auto& kv : m_Rcons) {
diff --git a/lib/methods/nulleventtask.cpp b/lib/methods/nulleventtask.cpp
index 3c02f234f8e..0a63905a163 100644
--- a/lib/methods/nulleventtask.cpp
+++ b/lib/methods/nulleventtask.cpp
@@ -8,7 +8,7 @@ using namespace icinga;
 
 REGISTER_FUNCTION_NONCONST(Internal, NullEvent, &NullEventTask::ScriptFunc, "checkable:resolvedMacros:useResolvedMacros");
 
-void NullEventTask::ScriptFunc(const Checkable::Ptr& checkable, const Dictionary::Ptr& resolvedMacros, bool useResolvedMacros)
+void NullEventTask::ScriptFunc(const Checkable::Ptr& checkable, [[maybe_unused]] const Dictionary::Ptr& resolvedMacros, [[maybe_unused]] bool useResolvedMacros)
 {
 	REQUIRE_NOT_NULL(checkable);
 
diff --git a/lib/remote/actionshandler.cpp b/lib/remote/actionshandler.cpp
index 0a23a3068a2..22c63100cd2 100644
--- a/lib/remote/actionshandler.cpp
+++ b/lib/remote/actionshandler.cpp
@@ -19,7 +19,7 @@ bool ActionsHandler::HandleRequest(
 	const WaitGroup::Ptr& waitGroup,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/apilistener.cpp b/lib/remote/apilistener.cpp
index ec04b059c42..68c2e8d29d3 100644
--- a/lib/remote/apilistener.cpp
+++ b/lib/remote/apilistener.cpp
@@ -112,7 +112,7 @@ double ApiListener::GetTlsHandshakeTimeout() const
 	return Configuration::TlsHandshakeTimeout;
 }
 
-void ApiListener::SetTlsHandshakeTimeout(double value, bool suppress_events, const Value& cookie)
+void ApiListener::SetTlsHandshakeTimeout(double value, [[maybe_unused]] bool suppress_events, [[maybe_unused]] const Value& cookie)
 {
 	Configuration::TlsHandshakeTimeout = value;
 }
diff --git a/lib/remote/configpackageshandler.cpp b/lib/remote/configpackageshandler.cpp
index 4a88ef9f8be..aba22b1913d 100644
--- a/lib/remote/configpackageshandler.cpp
+++ b/lib/remote/configpackageshandler.cpp
@@ -15,7 +15,7 @@ bool ConfigPackagesHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/configstageshandler.cpp b/lib/remote/configstageshandler.cpp
index 09a4ed3c8a4..3f5477b5bab 100644
--- a/lib/remote/configstageshandler.cpp
+++ b/lib/remote/configstageshandler.cpp
@@ -22,7 +22,7 @@ bool ConfigStagesHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/consolehandler.cpp b/lib/remote/consolehandler.cpp
index 22bbe591161..3764d5f3675 100644
--- a/lib/remote/consolehandler.cpp
+++ b/lib/remote/consolehandler.cpp
@@ -56,7 +56,7 @@ bool ConsoleHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/createobjecthandler.cpp b/lib/remote/createobjecthandler.cpp
index b002d1cf7f9..48ec0d2a13a 100644
--- a/lib/remote/createobjecthandler.cpp
+++ b/lib/remote/createobjecthandler.cpp
@@ -19,7 +19,7 @@ bool CreateObjectHandler::HandleRequest(
 	const WaitGroup::Ptr& waitGroup,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/deleteobjecthandler.cpp b/lib/remote/deleteobjecthandler.cpp
index 652a66b4b2f..15aa334b5a2 100644
--- a/lib/remote/deleteobjecthandler.cpp
+++ b/lib/remote/deleteobjecthandler.cpp
@@ -19,7 +19,7 @@ bool DeleteObjectHandler::HandleRequest(
 	const WaitGroup::Ptr& waitGroup,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/infohandler.cpp b/lib/remote/infohandler.cpp
index 893705b1a62..d901308182f 100644
--- a/lib/remote/infohandler.cpp
+++ b/lib/remote/infohandler.cpp
@@ -12,7 +12,7 @@ bool InfoHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/jsonrpcconnection-heartbeat.cpp b/lib/remote/jsonrpcconnection-heartbeat.cpp
index 9b83c13632d..03523afd441 100644
--- a/lib/remote/jsonrpcconnection-heartbeat.cpp
+++ b/lib/remote/jsonrpcconnection-heartbeat.cpp
@@ -41,7 +41,7 @@ void JsonRpcConnection::HandleAndWriteHeartbeats(boost::asio::yield_context yc)
 	}
 }
 
-Value JsonRpcConnection::HeartbeatAPIHandler(const MessageOrigin::Ptr& origin, const Dictionary::Ptr& params)
+Value JsonRpcConnection::HeartbeatAPIHandler(const MessageOrigin::Ptr&, [[maybe_unused]] const Dictionary::Ptr& params)
 {
 	return Empty;
 }
diff --git a/lib/remote/modifyobjecthandler.cpp b/lib/remote/modifyobjecthandler.cpp
index 71f6e068b9b..7bafa846bc6 100644
--- a/lib/remote/modifyobjecthandler.cpp
+++ b/lib/remote/modifyobjecthandler.cpp
@@ -17,7 +17,7 @@ bool ModifyObjectHandler::HandleRequest(
 	const WaitGroup::Ptr& waitGroup,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/statushandler.cpp b/lib/remote/statushandler.cpp
index b11ff616f5b..bd5b0fdb632 100644
--- a/lib/remote/statushandler.cpp
+++ b/lib/remote/statushandler.cpp
@@ -16,7 +16,7 @@ class StatusTargetProvider final : public TargetProvider
 public:
 	DECLARE_PTR_TYPEDEFS(StatusTargetProvider);
 
-	void FindTargets(const String& type,
+	void FindTargets([[maybe_unused]] const String& type,
 		const std::function<void (const Value&)>& addTarget) const override
 	{
 		Namespace::Ptr statsFunctions = ScriptGlobal::Get("StatsFunctions", &Empty);
@@ -29,7 +29,7 @@ class StatusTargetProvider final : public TargetProvider
 		}
 	}
 
-	Value GetTargetByName(const String& type, const String& name) const override
+	Value GetTargetByName([[maybe_unused]] const String& type, const String& name) const override
 	{
 		Namespace::Ptr statsFunctions = ScriptGlobal::Get("StatsFunctions", &Empty);
 
@@ -62,7 +62,7 @@ class StatusTargetProvider final : public TargetProvider
 		return type == "Status";
 	}
 
-	String GetPluralName(const String& type) const override
+	String GetPluralName([[maybe_unused]] const String& type) const override
 	{
 		return "statuses";
 	}
@@ -72,7 +72,7 @@ bool StatusHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/templatequeryhandler.cpp b/lib/remote/templatequeryhandler.cpp
index c2fe11f72ce..44b4d048cbb 100644
--- a/lib/remote/templatequeryhandler.cpp
+++ b/lib/remote/templatequeryhandler.cpp
@@ -79,7 +79,7 @@ bool TemplateQueryHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/typequeryhandler.cpp b/lib/remote/typequeryhandler.cpp
index d303e5c5d81..cb08e7d8aa8 100644
--- a/lib/remote/typequeryhandler.cpp
+++ b/lib/remote/typequeryhandler.cpp
@@ -17,7 +17,7 @@ class TypeTargetProvider final : public TargetProvider
 public:
 	DECLARE_PTR_TYPEDEFS(TypeTargetProvider);
 
-	void FindTargets(const String& type,
+	void FindTargets([[maybe_unused]] const String& type,
 		const std::function<void (const Value&)>& addTarget) const override
 	{
 		for (const Type::Ptr& target : Type::GetAllTypes()) {
@@ -25,7 +25,7 @@ class TypeTargetProvider final : public TargetProvider
 		}
 	}
 
-	Value GetTargetByName(const String& type, const String& name) const override
+	Value GetTargetByName([[maybe_unused]] const String& type, const String& name) const override
 	{
 		Type::Ptr ptype = Type::GetByName(name);
 
@@ -40,7 +40,7 @@ class TypeTargetProvider final : public TargetProvider
 		return type == "Type";
 	}
 
-	String GetPluralName(const String& type) const override
+	String GetPluralName([[maybe_unused]] const String& type) const override
 	{
 		return "types";
 	}
@@ -50,7 +50,7 @@ bool TypeQueryHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;
diff --git a/lib/remote/variablequeryhandler.cpp b/lib/remote/variablequeryhandler.cpp
index b0bfc51de09..1f8fd76b367 100644
--- a/lib/remote/variablequeryhandler.cpp
+++ b/lib/remote/variablequeryhandler.cpp
@@ -19,7 +19,7 @@ class VariableTargetProvider final : public TargetProvider
 public:
 	DECLARE_PTR_TYPEDEFS(VariableTargetProvider);
 
-	void FindTargets(const String& type,
+	void FindTargets([[maybe_unused]] const String& type,
 		const std::function<void (const Value&)>& addTarget) const override
 	{
 		Namespace::Ptr globals = ScriptGlobal::GetGlobals();
@@ -39,7 +39,7 @@ class VariableTargetProvider final : public TargetProvider
 		}
 	}
 
-	Value GetTargetByName(const String& type, const String& name) const override
+	Value GetTargetByName([[maybe_unused]] const String& type, const String& name) const override
 	{
 		if (name == "TicketSalt") {
 			BOOST_THROW_EXCEPTION(std::invalid_argument{"Access to TicketSalt via /v1/variables is not permitted."});
@@ -52,7 +52,7 @@ class VariableTargetProvider final : public TargetProvider
 		return type == "Variable";
 	}
 
-	String GetPluralName(const String& type) const override
+	String GetPluralName([[maybe_unused]] const String& type) const override
 	{
 		return "variables";
 	}
@@ -62,7 +62,7 @@ bool VariableQueryHandler::HandleRequest(
 	const WaitGroup::Ptr&,
 	const HttpApiRequest& request,
 	HttpApiResponse& response,
-	boost::asio::yield_context& yc
+	boost::asio::yield_context&
 )
 {
 	namespace http = boost::beast::http;