diff --git a/lib/base/exception.cpp b/lib/base/exception.cpp
index 5d7f901b7..51320f5a3 100644
--- a/lib/base/exception.cpp
+++ b/lib/base/exception.cpp
@@ -406,3 +406,34 @@ Dictionary::Ptr ValidationError::GetDebugHint() const
 	return m_DebugHint;
 }
 
+std::string icinga::to_string(const StackTraceErrorInfo&)
+{
+	return "";
+}
+
+#ifdef _WIN32
+std::string icinga::to_string(const errinfo_win32_error& e)
+{
+	return "[errinfo_win32_error] = " + Utility::FormatErrorNumber(e.value()) + "\n";
+}
+#endif /* _WIN32 */
+
+std::string icinga::to_string(const errinfo_getaddrinfo_error& e)
+{
+	String msg;
+
+#ifdef _WIN32
+	msg = gai_strerrorA(e.value());
+#else /* _WIN32 */
+	msg = gai_strerror(e.value());
+#endif /* _WIN32 */
+
+	return "[errinfo_getaddrinfo_error] = " + String(msg) + "\n";
+}
+
+std::string icinga::to_string(const ContextTraceErrorInfo& e)
+{
+	std::ostringstream msgbuf;
+	msgbuf << "[Context] = " << e.value();
+	return msgbuf.str();
+}
diff --git a/lib/base/exception.hpp b/lib/base/exception.hpp
index df41d4523..e4f53e50b 100644
--- a/lib/base/exception.hpp
+++ b/lib/base/exception.hpp
@@ -106,19 +106,11 @@ void RethrowUncaughtException();
 
 typedef boost::error_info<StackTrace, StackTrace> StackTraceErrorInfo;
 
-inline std::string to_string(const StackTraceErrorInfo&)
-{
-	return "";
-}
+std::string to_string(const StackTraceErrorInfo&);
 
 typedef boost::error_info<ContextTrace, ContextTrace> ContextTraceErrorInfo;
 
-inline std::string to_string(const ContextTraceErrorInfo& e)
-{
-	std::ostringstream msgbuf;
-	msgbuf << "[Context] = " << e.value();
-	return msgbuf.str();
-}
+std::string to_string(const ContextTraceErrorInfo& e);
 
 String DiagnosticInformation(const std::exception& ex, bool verbose = true, StackTrace *stack = nullptr, ContextTrace *context = nullptr);
 String DiagnosticInformation(const boost::exception_ptr& eptr, bool verbose = true);
@@ -139,27 +131,13 @@ class win32_error : virtual public std::exception, virtual public boost::excepti
 struct errinfo_win32_error_;
 typedef boost::error_info<struct errinfo_win32_error_, int> errinfo_win32_error;
 
-inline std::string to_string(const errinfo_win32_error& e)
-{
-	return "[errinfo_win32_error] = " + Utility::FormatErrorNumber(e.value()) + "\n";
-}
+std::string to_string(const errinfo_win32_error& e);
 #endif /* _WIN32 */
 
 struct errinfo_getaddrinfo_error_;
 typedef boost::error_info<struct errinfo_getaddrinfo_error_, int> errinfo_getaddrinfo_error;
 
-inline std::string to_string(const errinfo_getaddrinfo_error& e)
-{
-	String msg;
-
-#ifdef _WIN32
-	msg = gai_strerrorA(e.value());
-#else /* _WIN32 */
-	msg = gai_strerror(e.value());
-#endif /* _WIN32 */
-
-	return "[errinfo_getaddrinfo_error] = " + String(msg) + "\n";
-}
+std::string to_string(const errinfo_getaddrinfo_error& e);
 
 struct errinfo_message_;
 typedef boost::error_info<struct errinfo_message_, std::string> errinfo_message;
diff --git a/lib/base/object.cpp b/lib/base/object.cpp
index add244396..51a850d37 100644
--- a/lib/base/object.cpp
+++ b/lib/base/object.cpp
@@ -252,3 +252,35 @@ INITIALIZE_ONCE([]() {
 });
 #endif /* I2_LEAK_DEBUG */
 
+void icinga::intrusive_ptr_add_ref(Object *object)
+{
+#ifdef I2_LEAK_DEBUG
+	if (object->m_References == 0)
+		TypeAddObject(object);
+#endif /* I2_LEAK_DEBUG */
+
+#ifdef _WIN32
+	InterlockedIncrement(&object->m_References);
+#else /* _WIN32 */
+	__sync_add_and_fetch(&object->m_References, 1);
+#endif /* _WIN32 */
+}
+
+void icinga::intrusive_ptr_release(Object *object)
+{
+	uintptr_t refs;
+
+#ifdef _WIN32
+	refs = InterlockedDecrement(&object->m_References);
+#else /* _WIN32 */
+	refs = __sync_sub_and_fetch(&object->m_References, 1);
+#endif /* _WIN32 */
+
+	if (unlikely(refs == 0)) {
+#ifdef I2_LEAK_DEBUG
+		TypeRemoveObject(object);
+#endif /* I2_LEAK_DEBUG */
+
+		delete object;
+	}
+}
diff --git a/lib/base/object.hpp b/lib/base/object.hpp
index 40eae3431..d6d9bc79f 100644
--- a/lib/base/object.hpp
+++ b/lib/base/object.hpp
@@ -164,38 +164,8 @@ Value GetPrototypeField(const Value& context, const String& field, bool not_foun
 void TypeAddObject(Object *object);
 void TypeRemoveObject(Object *object);
 
-inline void intrusive_ptr_add_ref(Object *object)
-{
-#ifdef I2_LEAK_DEBUG
-	if (object->m_References == 0)
-		TypeAddObject(object);
-#endif /* I2_LEAK_DEBUG */
-
-#ifdef _WIN32
-	InterlockedIncrement(&object->m_References);
-#else /* _WIN32 */
-	__sync_add_and_fetch(&object->m_References, 1);
-#endif /* _WIN32 */
-}
-
-inline void intrusive_ptr_release(Object *object)
-{
-	uintptr_t refs;
-
-#ifdef _WIN32
-	refs = InterlockedDecrement(&object->m_References);
-#else /* _WIN32 */
-	refs = __sync_sub_and_fetch(&object->m_References, 1);
-#endif /* _WIN32 */
-
-	if (unlikely(refs == 0)) {
-#ifdef I2_LEAK_DEBUG
-		TypeRemoveObject(object);
-#endif /* I2_LEAK_DEBUG */
-
-		delete object;
-	}
-}
+void intrusive_ptr_add_ref(Object *object);
+void intrusive_ptr_release(Object *object);
 
 template<typename T>
 class ObjectImpl
diff --git a/lib/base/tlsutility.cpp b/lib/base/tlsutility.cpp
index 4adf04f33..3955ceca4 100644
--- a/lib/base/tlsutility.cpp
+++ b/lib/base/tlsutility.cpp
@@ -782,4 +782,19 @@ bool VerifyCertificate(const std::shared_ptr<X509>& caCertificate, const std::sh
 	return rc == 1;
 }
 
+std::string to_string(const errinfo_openssl_error& e)
+{
+	std::ostringstream tmp;
+	int code = e.value();
+	char errbuf[120];
+
+	const char *message = ERR_error_string(code, errbuf);
+
+	if (!message)
+		message = "Unknown error.";
+
+	tmp << code << ", \"" << message << "\"";
+	return "[errinfo_openssl_error]" + tmp.str() + "\n";
+}
+
 }
diff --git a/lib/base/tlsutility.hpp b/lib/base/tlsutility.hpp
index 18ffa7f26..7928c56d1 100644
--- a/lib/base/tlsutility.hpp
+++ b/lib/base/tlsutility.hpp
@@ -61,20 +61,7 @@ class openssl_error : virtual public std::exception, virtual public boost::excep
 struct errinfo_openssl_error_;
 typedef boost::error_info<struct errinfo_openssl_error_, unsigned long> errinfo_openssl_error;
 
-inline std::string to_string(const errinfo_openssl_error& e)
-{
-	std::ostringstream tmp;
-	int code = e.value();
-	char errbuf[120];
-
-	const char *message = ERR_error_string(code, errbuf);
-
-	if (!message)
-		message = "Unknown error.";
-
-	tmp << code << ", \"" << message << "\"";
-	return "[errinfo_openssl_error]" + tmp.str() + "\n";
-}
+std::string to_string(const errinfo_openssl_error& e);
 
 }
 
diff --git a/lib/base/workqueue.cpp b/lib/base/workqueue.cpp
index f8247bb7e..a18c9818b 100644
--- a/lib/base/workqueue.cpp
+++ b/lib/base/workqueue.cpp
@@ -299,3 +299,18 @@ size_t WorkQueue::GetTaskCount(RingBuffer::SizeType span)
 	boost::mutex::scoped_lock lock(m_StatsMutex);
 	return m_TaskStats.UpdateAndGetValues(Utility::GetTime(), span);
 }
+
+bool icinga::operator<(const Task& a, const Task& b)
+{
+	if (a.Priority < b.Priority)
+		return true;
+
+	if (a.Priority == b.Priority) {
+		if (a.ID > b.ID)
+			return true;
+		else
+			return false;
+	}
+
+	return false;
+}
diff --git a/lib/base/workqueue.hpp b/lib/base/workqueue.hpp
index 955651b4a..14d0dd5fb 100644
--- a/lib/base/workqueue.hpp
+++ b/lib/base/workqueue.hpp
@@ -54,20 +54,7 @@ struct Task
 	int ID{-1};
 };
 
-inline bool operator<(const Task& a, const Task& b)
-{
-	if (a.Priority < b.Priority)
-		return true;
-
-	if (a.Priority == b.Priority) {
-		if (a.ID > b.ID)
-			return true;
-		else
-			return false;
-	}
-
-	return false;
-}
+bool operator<(const Task& a, const Task& b);
 
 /**
  * A workqueue.