From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19F0DC6FD19 for ; Mon, 13 Mar 2023 20:28:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229755AbjCMU2K (ORCPT ); Mon, 13 Mar 2023 16:28:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229921AbjCMU2I (ORCPT ); Mon, 13 Mar 2023 16:28:08 -0400 Received: from mail-io1-xd33.google.com (mail-io1-xd33.google.com [IPv6:2607:f8b0:4864:20::d33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4901A8C58D for ; Mon, 13 Mar 2023 13:27:33 -0700 (PDT) Received: by mail-io1-xd33.google.com with SMTP id y140so5530960iof.6 for ; Mon, 13 Mar 2023 13:27:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1678739252; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=5Otgt/Gk3YX4KYFjCG7GlqU9AmBZZejlnFSecR+v+h8=; b=Nns5Q9s1NSm0Smoy71/Adkkp/LTu6J26A7SunJUaQXYBXj1AyNzjIxs4lSX1Sp4GNr Ga4LgtSo6eUcZcr/y91En7MRjSRhgMnfxOGtJQcNMWIbv8W0JGhhCQmyGJdbA0KA+pL8 3XmsuPIqK6yr4RVe9Rx/JgzX9CFq16aoUH3iDjAJAPjGak5uzMdsNXPd/a5oCXfGcUQq jJ4bzKpk392CckVvz/5+b/+0CfeLVzpiqrcfVocElz134sMnY2LWrH8IG2Jp1QR8PRRj +a7HHbry8Qukk5N1dWbA2uWz02yNjnJSc2W9U99L9+bbCuVhXph+vC1FTk+/umPjonTk psZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678739252; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=5Otgt/Gk3YX4KYFjCG7GlqU9AmBZZejlnFSecR+v+h8=; b=s+XW7C25WxDWAhL2SS1J38aF6eBjRRRXgfLGhjx4wj+wUg8xrTek4ut5VwYU+eGbvm FYum7f8uEQMbCCQsSQIkbhRq3sGjkzcuKBtsUeBdv1MCMAv8yo8MuH6l73GEGs2ApQ8p oVa1qj6VcVOZCNK+Mlso5sLHPuTQqxoPy5splvLWIhzxcylGB97kHEOZnVF5SOnwp1Rl 1/kF6x1KI/JLaQlIIlWZJA0GjKfEjHpLtUAp0JZERoIAirKsPAHXUSMyVjG0y3KMOole +NQJoAsLYTMAFnU4qyE5dn3AgM1l+6mkoP2kguSl5vZsNOcnVCgFgOLMU7FvAi055JW7 KNxA== X-Gm-Message-State: AO0yUKUCUOSZIhtCVaKxSh+nNolMhq44IEWotiT/nOJV9x+2aNAanssf J4HuVBsJysCanTBnxHA6wGMj9Cc/M352QWdRABozoA== X-Google-Smtp-Source: AK7set9VVtLTospuwBJABoTKXAV6cC9RJeWTOkyYouRgullR9I2UZ3rYLznGNQ8qECOc2hgWiOsZQOwZCnNG4NZ0hnQ= X-Received: by 2002:a6b:dc03:0:b0:74c:7eac:a064 with SMTP id s3-20020a6bdc03000000b0074c7eaca064mr16374856ioc.2.1678739252200; Mon, 13 Mar 2023 13:27:32 -0700 (PDT) MIME-Version: 1.0 References: <20230311065753.3012826-1-irogers@google.com> <20230311065753.3012826-3-irogers@google.com> In-Reply-To: From: Ian Rogers Date: Mon, 13 Mar 2023 13:27:21 -0700 Message-ID: Subject: Re: [PATCH v1 02/13] perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL To: Arnaldo Carvalho de Melo Cc: Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Nathan Chancellor , Nick Desaulniers , Tom Rix , Roberto Sassu , Quentin Monnet , Andres Freund , Tiezhu Yang , Pavithra Gurushankar , Yang Jihong , Adrian Hunter , Leo Yan , =?UTF-8?Q?Martin_Li=C5=A1ka?= , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, llvm@lists.linux.dev, Stephane Eranian Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org On Mon, Mar 13, 2023 at 1:19=E2=80=AFPM Arnaldo Carvalho de Melo wrote: > > Em Fri, Mar 10, 2023 at 10:57:42PM -0800, Ian Rogers escreveu: > > BPF skeleton support is now key to a number of perf features. Rather > > than making it so that BPF support must be enabled for the build, make > > this the default and error if the build lacks a clang and libbpf that > > are sufficient. To avoid the error and build without BPF skeletons the > > NO_BPF_SKEL=3D1 flag can be used. Add a build-options flag to 'perf > > version' to enable detection of the BPF skeleton support and use this > > in the offcpu shell test. > > Checking this: > > cd . && make LIBBPF_DYNAMIC=3D1 FEATURES_DUMP=3D/var/home/acme/git/perf-t= ools-next/tools/perf/BUILD_TEST_FEATURE_DUMP -j32 O=3D/tmp/tmp.Rr5xDuXo13 D= ESTDIR=3D/tmp/tmp.cYdDvy09eY > BUILD: Doing 'make -j32' parallel build > HOSTCC /tmp/tmp.Rr5xDuXo13/fixdep.o > HOSTLD /tmp/tmp.Rr5xDuXo13/fixdep-in.o > LINK /tmp/tmp.Rr5xDuXo13/fixdep > Warning: Kernel ABI header at 'tools/include/uapi/linux/in.h' differs fro= m latest version at 'include/uapi/linux/in.h' > diff -u tools/include/uapi/linux/in.h include/uapi/linux/in.h > Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' = differs from latest version at 'arch/x86/include/asm/cpufeatures.h' > diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpu= features.h > Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/perf_reg= s.h' differs from latest version at 'arch/arm64/include/uapi/asm/perf_regs.= h' > diff -u tools/arch/arm64/include/uapi/asm/perf_regs.h arch/arm64/include/= uapi/asm/perf_regs.h > Warning: Kernel ABI header at 'tools/include/linux/coresight-pmu.h' diffe= rs from latest version at 'include/linux/coresight-pmu.h' > diff -u tools/include/linux/coresight-pmu.h include/linux/coresight-pmu.h > Makefile.config:1130: No openjdk development package found, please instal= l JDK package, e.g. openjdk-8-jdk, java-1.8.0-openjdk-devel > > GEN /tmp/tmp.Rr5xDuXo13/common-cmds.h > CC /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-test-api-v0.o > CC /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-show-cycles.o > LINK /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-test-api-v0.so > LINK /tmp/tmp.Rr5xDuXo13/dlfilters/dlfilter-show-cycles.so > INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/exec-cmd.h > INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/help.h > INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/pager.h > INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/parse-options.h > INSTALL /tmp/tmp.Rr5xDuXo13/libsubcmd/include/subcmd/run-command.h > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/exec-cmd.o > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/help.o > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/pager.o > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/parse-options.o > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/run-command.o > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/sigchain.o > CC /tmp/tmp.Rr5xDuXo13/libsubcmd/subcmd-config.o > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/ > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/ > INSTALL libsubcmd_headers > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/hashmap.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/relo_core.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/libbpf_internal.h > PERF_VERSION =3D 6.3.rc1.g0b82b38b7b56 > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/bpf_perf.h > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/core.h > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/cpumap.h > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/threadmap.h > INSTALL /tmp/tmp.Rr5xDuXo13/libsymbol/include/symbol/kallsyms.h > INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/cpu.h > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/evlist.h > INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/debug.h > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/evsel.h > INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/io.h > GEN perf-archive > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/event.h > INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/fd/array.h > GEN perf-iostat > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/perf/mmap.h > CC /tmp/tmp.Rr5xDuXo13/libperf/core.o > CC /tmp/tmp.Rr5xDuXo13/libsymbol/kallsyms.o > CC /tmp/tmp.Rr5xDuXo13/libapi/cpu.o > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/cpumap.h > INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/fs/fs.h > INSTALL /tmp/tmp.Rr5xDuXo13/libapi/include/api/fs/tracing_path.h > MKDIR /tmp/tmp.Rr5xDuXo13/libapi/fd/ > CC /tmp/tmp.Rr5xDuXo13/libapi/debug.o > CC /tmp/tmp.Rr5xDuXo13/libapi/str_error_r.o > CC /tmp/tmp.Rr5xDuXo13/libperf/cpumap.o > INSTALL libsymbol_headers > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/evlist.h > CC /tmp/tmp.Rr5xDuXo13/libperf/threadmap.o > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/evsel.h > CC /tmp/tmp.Rr5xDuXo13/libperf/evsel.o > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/lib.h > CC /tmp/tmp.Rr5xDuXo13/libperf/evlist.o > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/mmap.h > MKDIR /tmp/tmp.Rr5xDuXo13/libapi/fs/ > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/threadmap.h > CC /tmp/tmp.Rr5xDuXo13/libapi/fd/array.o > MKDIR /tmp/tmp.Rr5xDuXo13/libapi/fs/ > CC /tmp/tmp.Rr5xDuXo13/libperf/mmap.o > INSTALL /tmp/tmp.Rr5xDuXo13/libperf/include/internal/xyarray.h > CC /tmp/tmp.Rr5xDuXo13/libapi/fs/fs.o > CC /tmp/tmp.Rr5xDuXo13/libperf/zalloc.o > CC /tmp/tmp.Rr5xDuXo13/libperf/xyarray.o > CC /tmp/tmp.Rr5xDuXo13/libapi/fs/cgroup.o > CC /tmp/tmp.Rr5xDuXo13/libperf/lib.o > INSTALL libapi_headers > CC /tmp/tmp.Rr5xDuXo13/libapi/fs/tracing_path.o > INSTALL libperf_headers > GEN /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/bpf_hel= per_defs.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/bpf.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/libbpf.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/btf.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/libbpf_common.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/libbpf_legacy.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/bpf_helpers.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/bpf_tracing.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/bpf_endian.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/bpf_core_read.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/skel_internal.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/libbpf_version.h > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/usdt.bpf.h > LD /tmp/tmp.Rr5xDuXo13/libapi/fd/libapi-in.o > LD /tmp/tmp.Rr5xDuXo13/libsymbol/libsymbol-in.o > AR /tmp/tmp.Rr5xDuXo13/libsymbol/libsymbol.a > LD /tmp/tmp.Rr5xDuXo13/libapi/fs/libapi-in.o > INSTALL /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/include= /bpf/bpf_helper_defs.h > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > INSTALL libbpf_headers > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > LD /tmp/tmp.Rr5xDuXo13/libapi/libapi-in.o > MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/libbpf.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/bpf.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/libbpf_probes.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/hashmap.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/nlattr.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/btf_dump.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/btf.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/libbpf_errno.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/str_error.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/netlink.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/ringbuf.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/bpf_prog_linfo.o > LD /tmp/tmp.Rr5xDuXo13/libperf/libperf-in.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/strset.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/linker.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/gen_loader.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/relo_core.o > AR /tmp/tmp.Rr5xDuXo13/libapi/libapi.a > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/usdt.o > AR /tmp/tmp.Rr5xDuXo13/libperf/libperf.a > LD /tmp/tmp.Rr5xDuXo13/libsubcmd/libsubcmd-in.o > AR /tmp/tmp.Rr5xDuXo13/libsubcmd/libsubcmd.a > GEN /tmp/tmp.Rr5xDuXo13/python/perf.cpython-311-x86_64-linux-gnu.so > LD /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/statico= bjs/libbpf-in.o > LINK /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/libbpf.= a > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/main.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/common.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/json_writer.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/gen.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/btf.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/xlated_dumper.= o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/btf_dumper.o > CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/disasm.o > LINK /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/bpftool > GEN /tmp/tmp.Rr5xDuXo13/util/bpf_skel/vmlinux.h > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bpf_prog_profiler.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_leader.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_follower.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bperf_cgroup.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/func_latency.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/off_cpu.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/lock_contention.bpf.o > CLANG /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/kwork_trace.bpf.o > util/bpf_skel/lock_contention.bpf.c:192:7: error: call to undeclared func= tion 'bpf_core_type_matches'; ISO C99 and later do not support implicit fun= ction declarations [-Werror,-Wimplicit-function-declaration] > if (bpf_core_type_matches(struct rw_semaphore___old)) { > ^ > util/bpf_skel/lock_contention.bpf.c:192:29: error: expected expression > if (bpf_core_type_matches(struct rw_semaphore___old)) { > ^ > util/bpf_skel/lock_contention.bpf.c:195:36: error: expected expression > } else if (bpf_core_type_matches(struct rw_semaphore___ne= w)) { > ^ > 3 errors generated. > /usr/bin/ld: bpf architecture of input file `/tmp/bperf_follower-74fba5.o= ' is incompatible with i386:x86-64 output > /usr/bin/ld: bpf architecture of input file `/tmp/bperf_leader-b2ec61.o' = is incompatible with i386:x86-64 output > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > collect2: error: ld returned 1 exit status > collect2: error: ld returned 1 exit status > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > /usr/bin/ld: bpf architecture of input file `/tmp/func_latency-70b7d4.o' = is incompatible with i386:x86-64 output > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= lock_contention.bpf.o] Error 1 > make[4]: *** Waiting for unfinished jobs.... > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= bperf_follower.bpf.o] Error 1 > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= bperf_leader.bpf.o] Error 1 > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > collect2: error: ld returned 1 exit status > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= func_latency.bpf.o] Error 1 > /usr/bin/ld: bpf architecture of input file `/tmp/bpf_prog_profiler-6e972= 0.o' is incompatible with i386:x86-64 output > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > collect2: error: ld returned 1 exit status > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= bpf_prog_profiler.bpf.o] Error 1 > /usr/bin/ld: bpf architecture of input file `/tmp/kwork_trace-8d5b4e.o' i= s incompatible with i386:x86-64 output > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > collect2: error: ld returned 1 exit status > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= kwork_trace.bpf.o] Error 1 > /usr/bin/ld: bpf architecture of input file `/tmp/off_cpu-1cb75d.o' is in= compatible with i386:x86-64 output > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > collect2: error: ld returned 1 exit status > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= off_cpu.bpf.o] Error 1 > /usr/bin/ld: bpf architecture of input file `/tmp/bperf_cgroup-45eb44.o' = is incompatible with i386:x86-64 output > /usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/12/../../../../lib64/crt1.o= : in function `_start': > (.text+0x1b): undefined reference to `main' > /usr/bin/ld: final link failed: file in wrong format > collect2: error: ld returned 1 exit status > clang-15: error: linker (via gcc) command failed with exit code 1 (use -v= to see invocation) > make[4]: *** [Makefile.perf:1081: /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/= bperf_cgroup.bpf.o] Error 1 > make[3]: *** [Makefile.perf:236: sub-make] Error 2 > make[2]: *** [Makefile:70: all] Error 2 > make[1]: *** [tests/make:326: make_libbpf_dynamic_O] Error 1 > make: *** [Makefile:103: build-test] Error 2 > make: Leaving directory '/var/home/acme/git/perf-tools-next/tools/perf' > > real 5m55.192s > user 62m31.596s > sys 14m30.828s > =E2=AC=A2[acme@toolbox perf-tools-next]$ Sorry, I was testing this on top of: https://lore.kernel.org/lkml/20230116010115.490713-1-irogers@google.com/ The issue being that we're trying to use an old libbpf that the has meant disabling things but: NO_BPF_SKEL :=3D 1 hadn't been set as part of this. I can address in v2, but with the "assume libbpf 1.0+" patch I hadn't been worrying about this as we'd error out for this case - rather than build error. The erroring out can be worked around by just not having libbpf be dynamic (ie static or not at all by adding NO_LIBBPF=3D1). Thanks, Ian >