Bug#1105066: pytorch-cuda: FTBFS: ld.lld: error: undefined reference: std::ios_base_library_init()@GLIBCXX_3.4.32

["M. Zhou" <lumin@debian.org>]

The bug is largely triggered by g++-12 being too old. However, the 
latest version of g++ supported by CUDA 12.3 is g++-12.2. We need to 
wait for the nvidia team to upload CUDA 12.4 (they have planned so) to 
unstable, and bump the g++ symlink in nvidia-cuda-toolkit-gcc to g++-13. 
At that time the issue should be automatically resolved without code 
change in src:pytorch-cuda.

On 5/22/25 6:48 AM, Santiago Vila wrote:
> severity 1105066 important
> thanks
>
> I can build the package fine today in trixie.
>
> At this point I believe this is more likely to be a problem in some 
> build-dependency
> than a problem in the package itself, but I'm not closing this yet 
> because I'm unsure.
>
> Thanks.