Hello Matthias,

Thanks for your feedback

libvirt-python contains several extensions: libvirtmod, libvirtmod_qemu,
libvirtmod_lxc
those extensions use common source files (typewrappers.c, libvirt-utils.c)

The fact that we enable parallel build and the build of all extensions are
done in the same folder might lead to
race condition that can lead to undeterministic output of the build

Right now, enabling -lto seems to increase the occurrence of this race
condition but I am not surprised if that happens
in other conditions.

On Tue, Mar 24, 2026 at 1:17 PM Matthias Klose <[email protected]> wrote:

> Control: tags -1 + moreinfo
>
> how does this relate to an internal compiler error?
>
>

-- 
Hector CAO
Software Engineer – Server Team / Virtualization
[email protected]
https://launc <https://launchpad.net/~hectorcao>hpad.net/~hectorcao
<https://launchpad.net/~hectorcao>

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