Merge topic 'loguru-bridge-check-status'

332cac5f vtkLogger: hide the loguru callback bridge without loguru enabled

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Reviewed-by: Mathieu Westphal (Kitware) <mathieu.westphal@kitware.com>
Merge-request: !10266

Common/Core/vtkLogger.cxx

@@ -244,6 +244,7 @@ std::string vtkLogger::GetThreadName()
 
 namespace
 {
+#if VTK_MODULE_ENABLE_VTK_loguru
 struct CallbackBridgeData
 {
   vtkLogger::LogHandlerCallbackT handler;
@@ -291,6 +292,7 @@ void loguru_callback_bridge_flush(void* user_data)
     data->flush(data->inner_data);
   }
 }
+#endif
 }
 
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