Adds initial intermediate qt6 porting state

qt6-after/qt6-migrated-legatus/Z/src/tcpserver/tcpserver_export.h

@@ -0,0 +1,27 @@
+
+
+#ifndef TCPSERVER_EXPORT_H
+#define TCPSERVER_EXPORT_H
+
+#include <QtCore/qglobal.h>
+
+#define TCPSERVER_VERSION_MAJ 0
+#define TCPSERVER_VERSION_MIN 0
+#define TCPSERVER_VERSION_REL 3
+#define TCPSERVER_VERSION (((TCPSERVER_VERSION_MAJ) << 16) | ((TCPSERVER_VERSION_MIN) << 8) | (TCPSERVER_VERSION_REL))
+
+#ifndef TCPSERVER_STATIC
+# ifdef BUILD_STATIC_LIBRARIES
+#  define TCPSERVER_EXPORT
+# else
+#  ifdef MAKE_TCPSERVER_LIB
+#   define TCPSERVER_EXPORT Q_DECL_EXPORT
+#  else
+#   define TCPSERVER_EXPORT Q_DECL_IMPORT
+#  endif
+# endif
+#else
+# define TCPSERVER_EXPORT __attribute__((visibility("default")))
+#endif
+
+#endif