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Message-ID: <a5d419e4-f2ea-27f6-9259-a7b6486ab616@isovalent.com>
Date: Fri, 23 Jun 2023 09:51:29 +0100
From: Quentin Monnet <quentin@...valent.com>
To: Fangrui Song <maskray@...gle.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
John Fastabend <john.fastabend@...il.com>, bpf@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] bpf: Replace deprecated -target with --target= for Clang
2023-06-23 02:09 UTC+0000 ~ Fangrui Song <maskray@...gle.com>
> -target has been deprecated since Clang 3.4 in 2013. Use the preferred
> --target=bpf form instead. This matches how we use --target= in
> scripts/Makefile.clang.
This seems to be the relevant commit, for reference:
https://github.com/llvm/llvm-project/commit/274b6f0c87a6a1798de0a68135afc7f95def6277
>
> Signed-off-by: Fangrui Song <maskray@...gle.com>
> ---
> Documentation/bpf/bpf_devel_QA.rst | 10 +++++-----
> Documentation/bpf/btf.rst | 4 ++--
> Documentation/bpf/llvm_reloc.rst | 6 +++---
> drivers/hid/bpf/entrypoints/Makefile | 2 +-
> kernel/bpf/preload/iterators/Makefile | 2 +-
> samples/bpf/Makefile | 6 +++---
> samples/bpf/gnu/stubs.h | 3 ++-
> samples/bpf/test_lwt_bpf.sh | 2 +-
> samples/hid/Makefile | 6 +++---
> tools/bpf/bpftool/Documentation/bpftool-gen.rst | 4 ++--
> tools/bpf/bpftool/Makefile | 2 +-
> tools/bpf/runqslower/Makefile | 2 +-
> tools/build/feature/Makefile | 2 +-
> tools/perf/Documentation/perf-config.txt | 2 +-
> tools/perf/Makefile.perf | 4 ++--
> tools/perf/util/llvm-utils.c | 4 ++--
> tools/testing/selftests/bpf/Makefile | 6 +++---
> tools/testing/selftests/bpf/gnu/stubs.h | 3 ++-
> tools/testing/selftests/hid/Makefile | 6 +++---
> tools/testing/selftests/net/Makefile | 4 ++--
> tools/testing/selftests/tc-testing/Makefile | 2 +-
> 21 files changed, 42 insertions(+), 40 deletions(-)
>
> diff --git a/samples/bpf/gnu/stubs.h b/samples/bpf/gnu/stubs.h
> index 719225b16626..cc37155fbfa5 100644
> --- a/samples/bpf/gnu/stubs.h
> +++ b/samples/bpf/gnu/stubs.h
> @@ -1 +1,2 @@
> -/* dummy .h to trick /usr/include/features.h to work with 'clang -target bpf' */
> +/* SPDX-License-Identifier: GPL-2.0 */
Are these necessary, seeing that the files only contain this single-line
comment?
> +/* dummy .h to trick /usr/include/features.h to work with 'clang --target=bpf' */
Other than this, the change looks good, thanks. Although it should
probably target bpf-next rather than bpf?
Acked-by: Quentin Monnet <quentin@...valent.com>
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