Qt6 migration fixes: RTI DDS alias targets, ErrorMessage namespace, DDS header include path

build-test2/Lts/Common/LtsSession/ltssession_export.h

@@ -0,0 +1,43 @@
+
+#ifndef LTSSESSION_EXPORT_H
+#define LTSSESSION_EXPORT_H
+
+#ifdef LTSSESSION_STATIC_DEFINE
+#  define LTSSESSION_EXPORT
+#  define LTSSESSION_NO_EXPORT
+#else
+#  ifndef LTSSESSION_EXPORT
+#    ifdef LtsSession_EXPORTS
+        /* We are building this library */
+#      define LTSSESSION_EXPORT __attribute__((visibility("default")))
+#    else
+        /* We are using this library */
+#      define LTSSESSION_EXPORT __attribute__((visibility("default")))
+#    endif
+#  endif
+
+#  ifndef LTSSESSION_NO_EXPORT
+#    define LTSSESSION_NO_EXPORT __attribute__((visibility("hidden")))
+#  endif
+#endif
+
+#ifndef LTSSESSION_DEPRECATED
+#  define LTSSESSION_DEPRECATED __attribute__ ((__deprecated__))
+#endif
+
+#ifndef LTSSESSION_DEPRECATED_EXPORT
+#  define LTSSESSION_DEPRECATED_EXPORT LTSSESSION_EXPORT LTSSESSION_DEPRECATED
+#endif
+
+#ifndef LTSSESSION_DEPRECATED_NO_EXPORT
+#  define LTSSESSION_DEPRECATED_NO_EXPORT LTSSESSION_NO_EXPORT LTSSESSION_DEPRECATED
+#endif
+
+/* NOLINTNEXTLINE(readability-avoid-unconditional-preprocessor-if) */
+#if 0 /* DEFINE_NO_DEPRECATED */
+#  ifndef LTSSESSION_NO_DEPRECATED
+#    define LTSSESSION_NO_DEPRECATED
+#  endif
+#endif
+
+#endif /* LTSSESSION_EXPORT_H */