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Date: Mon, 20 Oct 2025 14:50:12 +0100
From: Leo Yan <leo.yan@arm.com>
To: hupu <hupu.gm@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>, acme@kernel.org,
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Subject: Re: [PATCH] perf build: Support passing extra Clang options via
 EXTRA_BPF_FLAGS
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Hi hupu,

On Mon, Oct 20, 2025 at 08:51:52PM +0800, hupu wrote:

[...]

> > To be clear, now we are not talking cross build for perf program or any
> > targeting a CPU arch, it is a build failure for eBPF program.
> >
> 
> I’d like to clarify the background and scenario once more:
> I’m building an SDK that includes a cross-compilation toolchain for
> the target architecture along with a copy of the kernel source tree.

I am not preventing to use toolchains in you mentioned SDK.  I just
prefer to give priority the headers provided by the kernel source.

Seems to me, a more reasonable series would be:

 - Fix the eBPF program build with using self-contained headers;
 - Extend to support external headers.

Thanks,
Leo