From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Florian Larysch <fl@n621.de>
Cc: buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 1/1] linux: fix pahole discovery when BR2_LINUX_KERNEL_NEEDS_HOST_PAHOLE
Date: Sat, 3 Oct 2026 18:31:03 +0200 [thread overview]
Message-ID: <asEtw61UbLFXZVLm@windsurf> (raw)
In-Reply-To: <20260918123409.22775-1-fl@n621.de>
On Fri, Sep 18, 2026 at 02:33:37PM +0200, Florian Larysch wrote:
> Around Linux 5.11, upstream started introducing checks that execute
> "pahole --version" for feature discovery (e.g. [1]).
>
> However, when building with BR2_LINUX_KERNEL_NEEDS_HOST_PAHOLE Buildroot
> only lists host-pahole in LINUX_DEPENDENCIES, so it isn't available for
> the configure step when using BR2_PER_PACKAGE_DIRECTORIES. This results
> in the host pahole being used (resulting in host-dependent behavior), or
> no pahole being detected at all when the build host doesn't have it
> (which will then disable Kconfig options that require it).
>
> Fix this by adding host-pahole to LINUX_KCONFIG_DEPENDENCIES.
>
> A similar issue occurs when running "make linux-menuconfig" and friends
> because PATH deliberately gets stripped when pkg-kconfig.mk builds
> x_CONFIGURATOR_MAKE_ENV. Explicitly pass the pahole path to fix this.
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=5f9ae91f7c0dbbc4195e2a6c8eedcaeb5b9e4cbb
>
> Signed-off-by: Florian Larysch <fl@n621.de>
Applied to master, thanks!
Best regards,
Thomas Petazzoni
--
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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next prev parent reply other threads:[~2026-10-03 16:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-18 12:33 [Buildroot] [PATCH 1/1] linux: fix pahole discovery when BR2_LINUX_KERNEL_NEEDS_HOST_PAHOLE Florian Larysch
2026-10-03 16:31 ` Thomas Petazzoni via buildroot [this message]
2026-10-10 9:23 ` Thomas Perale via buildroot
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