FWIW in the upcoming python 3.12 update I have removed the pgo patch (0001-Makefile.pre-use-qemu-wrapper-when-gathering-profile.patch) with the rationale that "pgo support has been rewritten upstream and needs to be reenabled and tested separately". I simply don't have bandwidth to make it work, with a ton of recipes in meta-oe that still need fixing with 3.12.
Alex On Thu, 14 Dec 2023 at 14:35, Richard Purdie <[email protected]> wrote: > > On Thu, 2023-12-14 at 13:31 +0000, Ross Burton wrote: > > On 14 Dec 2023, at 07:49, Alexandre Belloni > > <[email protected]> wrote: > > > Not obvious but this is the cause of: > > > > > > https://autobuilder.yoctoproject.org/typhoon/#/builders/20/builds/8697 > > > > That was a fun rabbithole to dig. > > > > The error from the log is: > > > > ERROR: /home/pokybuild/yocto-worker/buildtools/build/meta/recipes- > > devtools/python/python3_3.11.5.bb: pgo cannot be enabled as there is > > no qemu-usermode support for this architecture/machine > > > > Which was intentional fallout: MACHINE_FEATURES don’t describe the > > SDK so that this ever worked was more luck than judgement. Also the > > python3 recipe will write the qemu-calling wrapper script using the > > architecture only for target builds, so we’ve not had PGO nativesdk > > python since the 3.7.2 upgrade in 2019[1] which changed this from all > > builds to target only. > > > > Maybe we should allow machine-sdk configurations to extend > > SDK_MACHINE_FEATURES and then nativesdk can use that? This might > > allow the MACHINE_FEATURES to “work” without being based on the > > target machine. > > Sadly I suspect we're going to have to go down this route eventually in > some form. > > > Alternatively, I can remove the pgo from the buildtools build, as it > > doesn’t actually do anything right now anyway. > > It was a decent win at one point so that would seem sad. > > Cheers, > > Richard > > >
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