ONNX is broken when built with ONNX_USE_LITE_PROTO=OFF (using protobuf-24.4): File already exists in database: onnx/onnx-ml.proto

[yurivict]

Failures are like:

1. optimizer_test.py failure on litprotobuf ERROR optimizer#38
2. 'import torch_geometric' fails: File already exists in database: onnx/onnx-ml.proto pyg-team/pytorch_geometric#9220

This appears tot be a long-standing problem, at least since 2021.

I just verified that building with ONNX_USE_LITE_PROTO=ON fixes the problem.

ONNX_USE_LITE_PROTO downloads prototbuf-22.3 sources, which works without a problem.
Without ONNX_USE_LITE_PROTO the package protobuf-24.4 is used, which has this problem.

Is the problem due to protobuf-24.4 incompatibility?

Could you please fix it?

Version: 1.16.0

[justinchuby]

The issue predates protobuf-24.4, so I am not sure?

[justinchuby]

I think it is due to another package linking to onnx at the same time: https://groups.google.com/g/protobuf/c/RZRCnOywdSk/m/HsOaheyFCQAJ

[yurivict]

PyTorch links to onnx, and then torch_geometric links to PyTorch. What would be the other package?

[justinchuby]

PyTorch builds with ONNX. I wonder why it would fail with torch_geometric? Does setting BUILD_SHARED_LIBS help?

[yurivict]

BUILD_SHARED_LIBS is in which project?