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Date: Mon, 13 Oct 2025 17:14:29 +0100
From: Leo Yan <leo.yan@arm.com>
To: Ian Rogers <irogers@google.com>
Cc: hupu <hupu.gm@gmail.com>, namhyung@kernel.org, peterz@infradead.org,
	mingo@redhat.com, acme@kernel.org, mark.rutland@arm.com,
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	linux-perf-users@vger.kernel.org
Subject: Re: [RFC] perf build: Allow passing extra Clang flags via
 EXTRA_CLANG_FLAGS
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On Mon, Oct 13, 2025 at 08:46:01AM -0700, Ian Rogers wrote:
> On Mon, Oct 13, 2025 at 1:08 AM hupu <hupu.gm@gmail.com> wrote:
> >
> > Hi Maintainer,
> >
> > I encountered some issues while cross-compiling perf (ARCH=arm64),
> > particularly when enabling the BPF option. During the build, Clang
> > fails to compile BPF programs due to missing header files. The
> > relevant error messages are as follows:
> 
> Thanks for reporting this issue! There has been some recent work in
> this area by Leo:
> https://lore.kernel.org/lkml/20251006-perf_build_android_ndk-v3-0-4305590795b2@arm.com/
> The patches are in Linux v6.18-rc1. Perhaps you could try repeating
> your build with this tree and reporting issues?

I am not 100% sure, could you execute install kernel headers and then
build perf ?

  make headers_install

Thanks,
Leo