[V2] qemurunner: Improve qmp module detection PKG_CONFIG_SYSROOT_DIR for qmp module path

Instead of using logfile to detect where qmp is located we can use PKG_CONFIG_SYSROOT_DIR, passed via ENV to the launch function as this will point to the image recipe for which launch is called.

Signed-off-by: Tom Geelen <t.f.g.geelen@gmail.com>
---
 meta/lib/oeqa/utils/qemurunner.py | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

On Wed, 7 Jan 2026 at 21:32, Tom Geelen <t.f.g.geelen@gmail.com> wrote:
>      def launch(self, launch_cmd, get_ip = True, qemuparams = None, extra_bootparams = None, env = None):
> -        # use logfile to determine the recipe-sysroot-native path and
> -        # then add in the site-packages path components and add that
> -        # to the python sys.path so the qmp module can be found.
> -        python_path = os.path.dirname(os.path.dirname(self.logfile))
> -        python_path += "/recipe-sysroot-native/usr/lib/qemu-python"
> +        # Use PKG_CONFIG_SYSROOT_DIR from env as a starting point for finding qmp module
> +        python_path = env.get("PKG_CONFIG_SYSROOT_DIR", "")
> +        python_path += "/../recipe-sysroot-native/usr/lib/qemu-python"

Thanks, I'm okay with this. It's not perfect, but it's short and very
unlikely to break.

Alex

On Wed Jan 7, 2026 at 9:25 PM CET, Tom Geelen via lists.openembedded.org wrote:
> Instead of using logfile to detect where qmp is located we can use PKG_CONFIG_SYSROOT_DIR, passed via ENV to the launch function as this will point to the image recipe for which launch is called.
>
> Signed-off-by: Tom Geelen <t.f.g.geelen@gmail.com>
> ---

Hi Tom,

Thanks for your patch.

This is failing on the autobuilder, with the following error:

2026-01-08 10:20:15,532 - oe-selftest - INFO - testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/qemux86-tc/build/layers/openembedded-core/meta/lib/oeqa/utils/commands.py", line 390, in runqemu
    qemu.start(params=qemuparams, ssh=ssh, runqemuparams=runqemuparams, launch_cmd=launch_cmd, discard_writes=discard_writes)
  File "/srv/pokybuild/yocto-worker/qemux86-tc/build/layers/openembedded-core/meta/lib/oeqa/targetcontrol.py", line 179, in start
    raise RuntimeError("%s - FAILED to start qemu - check the task log and the boot log" % self.pn)
RuntimeError: core-image-minimal - FAILED to start qemu - check the task log and the boot log
...
DEBUG: Using kvm for runqemu
ERROR: qemurunner: qmp module missing, please ensure it's installed in /../recipe-sysroot-native/usr/lib/qemu-python (No module named 'qmp')

https://autobuilder.yoctoproject.org/valkyrie/#/builders/28/builds/2925
https://autobuilder.yoctoproject.org/valkyrie/#/builders/5/builds/2931
https://autobuilder.yoctoproject.org/valkyrie/#/builders/28/builds/2925
https://autobuilder.yoctoproject.org/valkyrie/#/builders/66/builds/2975

Can you have a look at these issues?

Thanks,
Mathieu

Hi Mattieu,

Certainly. Question from my side. What is the exact setup that is used on
the autobuilder? Or the build commands for that matter.
I would like to reproduce this particular setup locally as well.

Regards,

Tom

On Thu, Jan 8, 2026 at 12:31 PM Mathieu Dubois-Briand <
mathieu.dubois-briand@bootlin.com> wrote:

> On Wed Jan 7, 2026 at 9:25 PM CET, Tom Geelen via lists.openembedded.org
> wrote:
> > Instead of using logfile to detect where qmp is located we can use
> PKG_CONFIG_SYSROOT_DIR, passed via ENV to the launch function as this will
> point to the image recipe for which launch is called.
> >
> > Signed-off-by: Tom Geelen <t.f.g.geelen@gmail.com>
> > ---
>
> Hi Tom,
>
> Thanks for your patch.
>
> This is failing on the autobuilder, with the following error:
>
> 2026-01-08 10:20:15,532 - oe-selftest - INFO -
> testtools.testresult.real._StringException: Traceback (most recent call
> last):
>   File
> "/srv/pokybuild/yocto-worker/qemux86-tc/build/layers/openembedded-core/meta/lib/oeqa/utils/commands.py",
> line 390, in runqemu
>     qemu.start(params=qemuparams, ssh=ssh, runqemuparams=runqemuparams,
> launch_cmd=launch_cmd, discard_writes=discard_writes)
>   File
> "/srv/pokybuild/yocto-worker/qemux86-tc/build/layers/openembedded-core/meta/lib/oeqa/targetcontrol.py",
> line 179, in start
>     raise RuntimeError("%s - FAILED to start qemu - check the task log and
> the boot log" % self.pn)
> RuntimeError: core-image-minimal - FAILED to start qemu - check the task
> log and the boot log
> ...
> DEBUG: Using kvm for runqemu
> ERROR: qemurunner: qmp module missing, please ensure it's installed in
> /../recipe-sysroot-native/usr/lib/qemu-python (No module named 'qmp')
>
> https://autobuilder.yoctoproject.org/valkyrie/#/builders/28/builds/2925
> https://autobuilder.yoctoproject.org/valkyrie/#/builders/5/builds/2931
> https://autobuilder.yoctoproject.org/valkyrie/#/builders/28/builds/2925
> https://autobuilder.yoctoproject.org/valkyrie/#/builders/66/builds/2975
>
> Can you have a look at these issues?
>
> Thanks,
> Mathieu
>
> --
> Mathieu Dubois-Briand, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com
>
>

On Thu Jan 8, 2026 at 3:52 PM CET, Tom Geelen wrote:
> Hi Mattieu,
>
> Certainly. Question from my side. What is the exact setup that is used on
> the autobuilder? Or the build commands for that matter.
> I would like to reproduce this particular setup locally as well.
>
> Regards,
>
> Tom
>

Sure!

This is a toolchain test, so the command used by the autobuilder is:
oe-selftest -a -t machine -t toolchain-system -j 15

You have a lot of tests failing, so you might want to just run one
specific test. This can be done with something like:
oe-selftest -r gcc.GccCrossSelfTestSystemEmulated.test_cross_gcc

In terms of configuration, you can have a look at the config step of the
build:
https://autobuilder.yoctoproject.org/valkyrie/api/v2/logs/4870597/raw_inline

But basically, you can probably try something like:
SDKMACHINE = "x86_64"
PACKAGE_CLASSES = "package_rpm package_deb package_ipk"
INHERIT += 'image-buildinfo'
IMAGE_BUILDINFO_VARS:append = ' IMAGE_BASENAME IMAGE_NAME'
IMAGE_INSTALL:append = ' ssh-pregen-hostkeys'
SANITY_TESTED_DISTROS = ''
EXTRA_IMAGE_FEATURES ?= 'allow-empty-password empty-root-password allow-root-login'
OE_FRAGMENTS += 'machine/qemux86 distro/poky'

Thanks,
Mathieu