On Thu, Feb 2, 2023 at 3:51 PM Mark Hatle
<[email protected]> wrote:
>
> I've encountered an issue. When I build nativesdk-qemu for mingw32 target I'm
> getting a failure. Below is my attempt to figure out what is going wrong.
>
> nativesdk-qemu is depending on libcap-ng for some reason, which does not
> compile
> for mingw32. Looking into how this dependency is coming about what appears to
> be happening is "virtfs" support is being enabled which triggers the
> dependency.
>
> Looking at the bitbake -e output, what I see is:
>
> https://git.yoctoproject.org/meta-virtualization/tree/recipes-devtools/qemu/qemu-package-split.inc#n46
>
> This is running for me in both the target and nativesdk configurations.
> Trying
> to understand why it's enable, go back to the caller:
>
> https://git.yoctoproject.org/meta-virtualization/tree/recipes-devtools/qemu/qemu_%25.bbappend
>
> It SHOULD only be loading that file if 'vmsep' is enabled, but I believe due
> to
> the way bitbake, oe-core and BBCLASSEXTEND works, the nativesdk file includes
> work the same way for both target and nativesdk. Looking at my
> DISTRO_FEATURES,
> my target does include 'vmsep', but my nativesdk does not.
>
> So hopefully this explains the failure, the target has vmsep, so the require
> always kicks in, which causes 'virtfs' to always be added to the
> configuration.
>
> I see two possible solutions to this:
>
> 1) Make the virtfs class-target specific. This would match the prior lines
> and
> how they are arranged. However, it's unclear to me if this was intended to be
> target specific or also alter and SDKs configuration.
>
> 2) Only enable virtfs for a Linux system (target or nativesdk), I think this
> can
> be done using an override one way or another.
>
> So for #1 the change would be something like:
>
> -PACKAGECONFIG:append = " virtfs"
> +PACKAGECONFIG:append:class-target = " virtfs"
>
The intention is that we require virtfs for a vmseparated target. i.e.
the target is the host running vmseparated containers.
So from the point of view of the build, restricting it to class-target is fine.
Bruce
>
> So for #2 the change would be something like:
>
> -PACKAGECONFIG:append = " virtfs"
> +ENABLE_VIRTFS = " virtfs"
> +ENABLE_VRITFS:sdkmingw32 = ""
> +
> +PACKAGECONFIG:append = "${ENABLE_VIRTFS}"
>
>
> I'm happy to submit a proper pull request, but I'm not sure what direction to
> go
> to fix this.
>
> Thanks!
> --Mark
>
>
>
--
- Thou shalt not follow the NULL pointer, for chaos and madness await
thee at its end
- "Use the force Harry" - Gandalf, Star Trek II
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