Thank you for your advice. Now I can export the .so file, but there is an error when loading the .so file with C + +. I will give up this scheme for the time being.
The following is the error message when loading the .so file:
terminate called after throwing an instance of ‘tvm::runtime::InternalError’ what(): [11:18:37] …/…/src/runtime/library_module.cc:116: Binary was created using metadata but a loader of that name is not registered. Available loaders are cuda, GraphExecutorFactory, GraphRuntimeFactory. Perhaps you need to recompile with this runtime enabled. Stack trace: