Problem of generate .so file

[ziwenjie]

Hi, dear fpthink
The following are the command prompts, would be really appreciated it if you could help.
I use boost1.73 and python3.8, I generate the libply_c.so. When I ld the libply_c.so, I get the warning,

(base) root@5095d02b5a00:/workspace/SPNet-main/lib/ply_c/build# ld libply_c.so 
ld: warning: cannot find entry symbol _start; not setting start address

And I can generate the pointops_cuda.cpython-38-x86_64-linux-gnu.so file, When I ld pointops_cuda.cpython-38-x86_64-linux-gnu.so, the error occurs.

ld: warning: cannot find entry symbol _start; not setting start address
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_InternFromString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyInstanceMethod_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_DelItemString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_Dealloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyModule_Create2'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsVoidPtr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_NotImplementedError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromSsize_t'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_SetAttrString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyType_IsSubtype'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Fetch'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyException_SetTraceback'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_RuntimeError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_Copy'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_PyThreadState_UncheckedGet'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyEval_RestoreThread'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_MemoryError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStaticMethod_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_DecodeUTF8'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_Print'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyUnicode_FromString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBytes_FromString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBaseObject_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyNumber_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySlice_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyModule_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_create'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_HasAttrString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_GetBuffer'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyTuple_Pack'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBytes_AsString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStructSequence_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_GetContext'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `_PyObject_NextNotImplemented'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_SetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_PyType_Lookup'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_Clear'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyMemoryView_FromMemory'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Clear'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyArg_ParseTupleAndKeywords'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCallable_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Xor'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyMem_Calloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsUnsignedLongLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_ExceptionMatches'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBuffer_Release'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBytes_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Or'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsSsize_t'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Size'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_TypeError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_RealAsDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Index'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsUnsignedLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyModule_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_InitThreads'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyNumber_Long'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyType_Ready'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyGILState_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyFloat_FromDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_IsTrue'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStructSequence_InitType'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySet_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_DeprecationWarning'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_GetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBytes_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_PyObject_GetDictPtr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Malloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_InternInPlace'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsLongLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_SetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBool_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_get'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Restore'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_WarnEx'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCapsule_SetName'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_WarnExplicit'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Call'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_alloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_List'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyFrozenSet_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromSize_t'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyTuple_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCFunction_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_GetIter'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyGILState_GetThisThreadState'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_GetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBytes_AsStringAndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyUnicode_AsEncodedString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyMethod_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_AsUTF8'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyImport_AddModule'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_CallFunctionObjArgs'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySlice_Unpack'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_ImportError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_AttributeError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Fast'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Occurred'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_DeleteCurrent'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Tuple'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyWeakref_NewRef'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_ImagAsDouble'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyUnicode_AsUTF8String'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_GetBuiltins'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBytes_FromStringAndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_ValueError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_FromFormat'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_And'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_FalseStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_GetName'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_SetItemString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyImport_ImportModule'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_OverflowError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_AsCComplex'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_BufferError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyTuple_GetSlice'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySlice_AdjustIndices'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyGILState_Ensure'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_AcquireThread'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_SetString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_CallObject'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_set'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_GetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_IsInstance'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_Append'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyMem_Free'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_Get'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Invert'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_FromStringAndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyType_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyArg_ParseTuple'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyEval_GetFrame'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_Repr'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyProperty_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyFrame_GetLineNumber'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_NormalizeException'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Merge'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromUnsignedLongLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_ClearWeakRefs'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_Next'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_IsSubclass'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySet_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_GetPointer'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_NoneStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyInstanceMethod_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_SetPointer'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_UserWarning'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_Join'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_RichCompareBool'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyGILState_Release'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_NewException'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySet_Add'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyModule_AddObject'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_GetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_NotImplementedStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_GetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyFrame_FastToLocals'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_RuntimeWarning'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyType_GenericNew'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_SetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Contains'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_SystemError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Items'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `Py_BuildValue'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_FromDoubles'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_GetItemString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyNumber_Float'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBool_FromLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyLong_AsLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_Exception'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_TrueStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyFloat_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_IndexError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_AsFileDescriptor'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsLongLongAndOverflow'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsLongAndOverflow'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_FromCComplex'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyFloat_AsDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromLongLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyIter_Next'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_SaveThread'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_SetContext'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_StopIteration'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `Py_GetVersion'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyType_GenericAlloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_GC_UnTrack'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromVoidPtr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCapsule_Import'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_CallMethod'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_GetAttrString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyModule_GetName'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_Str'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Format'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_SetAttr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `_Py_EllipsisObject'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCFunction_NewEx'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromUnsignedLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStaticMethod_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_AsUTF8AndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCode_Addr2Line'
root@5095d02b5a00:/workspace/SPNet-main/lib/pointops/build/lib.linux-x86_64-3.8# 
root@5095d02b5a00:/workspace/SPNet-main/lib/pointops/build/lib.linux-x86_64-3.8# ld pointops_cuda.cpython-38-x86_64-linux-gnu.so 
ld: warning: cannot find entry symbol _start; not setting start address
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_InternFromString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyInstanceMethod_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_DelItemString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_Dealloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyModule_Create2'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsVoidPtr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_NotImplementedError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromSsize_t'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_SetAttrString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyType_IsSubtype'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Fetch'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyException_SetTraceback'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_RuntimeError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_Copy'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_PyThreadState_UncheckedGet'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyEval_RestoreThread'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_MemoryError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStaticMethod_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_DecodeUTF8'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_Print'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyUnicode_FromString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBytes_FromString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBaseObject_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyNumber_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySlice_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyModule_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_create'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_HasAttrString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_GetBuffer'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyTuple_Pack'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBytes_AsString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStructSequence_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_GetContext'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `_PyObject_NextNotImplemented'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_SetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_PyType_Lookup'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_Clear'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyMemoryView_FromMemory'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Clear'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyArg_ParseTupleAndKeywords'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCallable_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Xor'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyMem_Calloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsUnsignedLongLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_ExceptionMatches'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBuffer_Release'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBytes_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Or'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsSsize_t'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Size'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_TypeError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_RealAsDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Index'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsUnsignedLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyModule_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_InitThreads'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyNumber_Long'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyType_Ready'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyGILState_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyFloat_FromDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_IsTrue'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStructSequence_InitType'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySet_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_DeprecationWarning'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_GetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBytes_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_PyObject_GetDictPtr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Malloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_InternInPlace'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsLongLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_SetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBool_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_get'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Restore'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_WarnEx'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCapsule_SetName'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_WarnExplicit'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_Call'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_alloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_List'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyFrozenSet_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromSize_t'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyTuple_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCFunction_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_GetIter'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyGILState_GetThisThreadState'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_GetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyBytes_AsStringAndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyUnicode_AsEncodedString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyMethod_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_AsUTF8'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyImport_AddModule'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_CallFunctionObjArgs'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySlice_Unpack'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_ImportError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_AttributeError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Fast'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Occurred'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_DeleteCurrent'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Tuple'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyWeakref_NewRef'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_ImagAsDouble'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyUnicode_AsUTF8String'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_GetBuiltins'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBytes_FromStringAndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_ValueError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_FromFormat'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_And'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_FalseStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_GetName'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_SetItemString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyImport_ImportModule'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_OverflowError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_AsCComplex'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_BufferError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyTuple_GetSlice'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySlice_AdjustIndices'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyGILState_Ensure'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_AcquireThread'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_SetString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_CallObject'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThread_tss_set'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_GetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_IsInstance'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_Append'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyMem_Free'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_Get'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyNumber_Invert'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_FromStringAndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyType_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyArg_ParseTuple'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyThreadState_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyEval_GetFrame'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_Repr'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyProperty_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyFrame_GetLineNumber'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_NormalizeException'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Merge'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromUnsignedLongLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_ClearWeakRefs'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_Next'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_IsSubclass'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySet_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_GetPointer'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_NoneStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyInstanceMethod_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_New'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_SetPointer'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_UserWarning'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_Join'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_RichCompareBool'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyGILState_Release'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyErr_NewException'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySet_Add'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyModule_AddObject'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_GetItem'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_NotImplementedStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_GetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyFrame_FastToLocals'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_RuntimeWarning'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyType_GenericNew'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_SetItem'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Contains'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_SystemError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyDict_Items'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `Py_BuildValue'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_FromDoubles'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyDict_GetItemString'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyNumber_Float'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyBool_FromLong'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyLong_AsLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_Exception'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `_Py_TrueStruct'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyFloat_Type'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyExc_IndexError'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_AsFileDescriptor'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsLongLongAndOverflow'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_AsLongAndOverflow'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyComplex_FromCComplex'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyFloat_AsDouble'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromLongLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyIter_Next'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyEval_SaveThread'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCapsule_SetContext'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyExc_StopIteration'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `Py_GetVersion'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PySequence_Check'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyType_GenericAlloc'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_GC_UnTrack'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromVoidPtr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCapsule_Import'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_CallMethod'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_GetAttrString'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyList_New'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyModule_GetName'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyObject_Str'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyErr_Format'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyObject_SetAttr'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `_Py_EllipsisObject'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyCFunction_NewEx'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyLong_FromUnsignedLong'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyStaticMethod_Type'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyUnicode_AsUTF8AndSize'
ld: pointops_cuda.cpython-38-x86_64-linux-gnu.so: undefined reference to `PyTuple_Size'
ld: /opt/conda/lib/python3.8/site-packages/torch/lib/libtorch_python.so: undefined reference to `PyCode_Addr2Line'

Best regards
ziwenjie