diff -up libArcus-5.2.2/include/Arcus/Error.h.export libArcus-5.2.2/include/Arcus/Error.h

--- libArcus-5.2.2/include/Arcus/Error.h.export	2022-11-30 09:32:40.000000000 -0500

+++ libArcus-5.2.2/include/Arcus/Error.h	2023-03-08 12:26:40.095859666 -0500

@@ -5,6 +5,7 @@

 #define ARCUS_ERROR_H

 #include "Arcus/Types.h"

+#include "ArcusExport.h"

 namespace Arcus

 {

@@ -32,7 +33,7 @@ enum class ErrorCode

 /**

  * A class representing an error with an error code and an error message.

  */

-class Error

+class ARCUS_EXPORT Error

 {

 public:

     /**

diff -up libArcus-5.2.2/include/Arcus/MessageTypeStore.h.export libArcus-5.2.2/include/Arcus/MessageTypeStore.h

--- libArcus-5.2.2/include/Arcus/MessageTypeStore.h.export	2022-11-30 09:32:40.000000000 -0500

+++ libArcus-5.2.2/include/Arcus/MessageTypeStore.h	2023-03-08 12:26:40.095859666 -0500

@@ -8,12 +8,14 @@

 #include "Arcus/Types.h"

+#include "ArcusExport.h"

+

 namespace Arcus

 {

 /**

  * A class to manage the different types of messages that are available.

  */

-class MessageTypeStore

+class ARCUS_EXPORT MessageTypeStore

 {

 public:

     MessageTypeStore();

@@ -87,7 +89,7 @@ public:

     void dumpMessageTypes();

 private:

-    class Private;

+    class ARCUS_NO_EXPORT Private;

     const std::unique_ptr<Private> d;

 };

 } // namespace Arcus

diff -up libArcus-5.2.2/include/Arcus/Socket.h.export libArcus-5.2.2/include/Arcus/Socket.h

--- libArcus-5.2.2/include/Arcus/Socket.h.export	2022-11-30 09:32:40.000000000 -0500

+++ libArcus-5.2.2/include/Arcus/Socket.h	2023-03-08 12:26:40.096859680 -0500

@@ -9,6 +9,8 @@

 #include "Arcus/Error.h"

 #include "Arcus/Types.h"

+#include "ArcusExport.h"

+

 namespace Arcus

 {

 class SocketListener;

@@ -21,7 +23,7 @@ class SocketListener;

  *

  * Please see the README in libArcus for more details.

  */

-class Socket

+class ARCUS_EXPORT Socket

 {

 public:

     Socket();

diff -up libArcus-5.2.2/include/Arcus/SocketListener.h.export libArcus-5.2.2/include/Arcus/SocketListener.h

--- libArcus-5.2.2/include/Arcus/SocketListener.h.export	2023-03-08 12:27:19.364375316 -0500

+++ libArcus-5.2.2/include/Arcus/SocketListener.h	2023-03-08 12:27:41.511666142 -0500

@@ -6,6 +6,8 @@

 #include "Arcus/Types.h"

+#include "ArcusExport.h"

+

 namespace Arcus

 {

 class Socket;

@@ -24,7 +26,7 @@ class Error;

  * signal from a subclass of this class, to make sure the actual event

  * is handled on the main thread.

  */

-class SocketListener

+class ARCUS_EXPORT SocketListener

 {

 public:

     SocketListener() : _socket(nullptr)