[Installation]: error: can't copy 'build/lib.linux-x86_64-cpython-310/vllm/_C.abi3.so': doesn't exist or not a regular file

[bailuan]

Your current environment

python 3.10.13 torch2.6 gcc 12.3.0

How you are installing vllm

When I install from source, encounter a this error: error: can't copy 'build/lib.linux-x86_64-cpython-310/vllm/_C.abi3.so': doesn't exist or not a regular file. I can't find useful answer in issue base.

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[bailuan]

I use python setuo.py develop.

[jeejeelee]

try: pip install -e .

[houseroad]

Is this AMD build or Nvidia build?

[houseroad]

https://github.com/vllm-project/vllm/pull/19009 may work around. python setup.py develop is needed by AMD, Nvidia should go with pip install -e .

Will dig further to understand how to fix the issue appropriately.

[houseroad]

I think cmake version is probably the reason. I reproduced the problem with 3.26, but good with 4.0.2. Probably some bug preventing the cmake adding abi3 suffix to the .so file.

[houseroad]

Okay, https://github.com/vllm-project/vllm/pull/19019 should be the right fix. cmake 3.26.0 should be buggy and not generating the abi suffix in the .so file name appropriately. Please use 3.26.1 or newer version.

[houseroad]

The fix landed. @bailuan could you check if the issue is fixed or not. So we can close the issue.

[houseroad]

Close, feel free to open if the issue is not resolved.