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 D14D1C6FD19 for ; Mon, 13 Mar 2023 20:20:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229826AbjCMUUe (ORCPT ); Mon, 13 Mar 2023 16:20:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229633AbjCMUUb (ORCPT ); Mon, 13 Mar 2023 16:20:31 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B053D30184; Mon, 13 Mar 2023 13:19:53 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D16D1B8154D; Mon, 13 Mar 2023 20:19:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B55BC433EF; Mon, 13 Mar 2023 20:19:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1678738749; bh=GDmcN/dy0SnSUMLHE7Vl7Yc0OKdYbuahZ2sS0Zgi9nk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=paQr7rvkAs+Np/ks66qj7uKD4IgUujNj51OA0x/xcHYY02DQk0kGwpvZPAkGgW+gJ tALopIq8T2VCeEfUGZpB6u4PCHerpg+aWIBYbmWMeMf3Jb0JE0/fbEjdC9BW65Sl0M nO/3RG/NCYYHWQyWo4PFWTpfP/BHd2CKvQpQcw3+PpOwjA3Q/c7eDbVXeevwZFYCcp RjPo6x8tUAL2ZTKKjkskbVR8MdbD3V5Uc5pYJUI7/0HqrT0fBLEh5RprCRScBir2LW pzDqgkCGZXQnTEZgLabfYcYxk2CeH7prrgCQAzqiBITj0YaS68wYzvuFC9lu1QGepu 3UuaV4p8QOOCg== Received: by quaco.ghostprotocols.net (Postfix, from userid 1000) id 5F79D4049F; Mon, 13 Mar 2023 17:19:06 -0300 (-03) Date: Mon, 13 Mar 2023 17:19:06 -0300 From: Arnaldo Carvalho de Melo To: Ian Rogers 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 , Martin =?utf-8?B?TGnFoWth?= , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, llvm@lists.linux.dev, Stephane Eranian Subject: Re: [PATCH v1 02/13] perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL Message-ID: References: <20230311065753.3012826-1-irogers@google.com> <20230311065753.3012826-3-irogers@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20230311065753.3012826-3-irogers@google.com> X-Url: http://acmel.wordpress.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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=1 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=1 FEATURES_DUMP=/var/home/acme/git/perf-tools-next/tools/perf/BUILD_TEST_FEATURE_DUMP -j32 O=/tmp/tmp.Rr5xDuXo13 DESTDIR=/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 from 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/cpufeatures.h Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/perf_regs.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' differs 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 install 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 = 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_helper_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/staticobjs/ MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ INSTALL libbpf_headers MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ LD /tmp/tmp.Rr5xDuXo13/libapi/libapi-in.o MKDIR /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/bpf.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf_probes.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/hashmap.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/nlattr.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/btf_dump.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/btf.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf_errno.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/str_error.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/netlink.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/ringbuf.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/bpf_prog_linfo.o LD /tmp/tmp.Rr5xDuXo13/libperf/libperf-in.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/strset.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/linker.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/gen_loader.o CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/relo_core.o AR /tmp/tmp.Rr5xDuXo13/libapi/libapi.a CC /tmp/tmp.Rr5xDuXo13/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/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/staticobjs/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 function 'bpf_core_type_matches'; ISO C99 and later do not support implicit function 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___new)) { ^ 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-6e9720.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' 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/kwork_trace.bpf.o] Error 1 /usr/bin/ld: bpf architecture of input file `/tmp/off_cpu-1cb75d.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/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 ⬢[acme@toolbox perf-tools-next]$