From patchwork Fri Jan 6 14:25:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ian Rogers X-Patchwork-Id: 13091410 X-Patchwork-Delegate: bpf@iogearbox.net 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 A8212C54EBE for ; Fri, 6 Jan 2023 14:26:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234410AbjAFO0F (ORCPT ); Fri, 6 Jan 2023 09:26:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60770 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234973AbjAFO0A (ORCPT ); Fri, 6 Jan 2023 09:26:00 -0500 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6218B7681A for ; Fri, 6 Jan 2023 06:25:58 -0800 (PST) Received: by mail-yb1-xb49.google.com with SMTP id n190-20020a25dac7000000b007447d7a25e4so1961025ybf.9 for ; Fri, 06 Jan 2023 06:25:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=1ELKsvqp/CVQlQh6V4i31lh01VunlKiC/zGB5BPQtSo=; b=jQ7TMfZ6mTKGiYxELU7dPBP6UAmUuxQp12nnyfHvFquXR1IyQZKdRmpS0Mhza56NGT gQ08Oxc+jxPERM20WK5uePhumjytu8aVvUWqGlG8xyTv+AnKtbcwzRo7ATc7veAstRKp xUrc0+WMAqnkom2fm8sUbpFm7WuL507emRZnu0m8hxc0UPEyoy9zOtexa4OSlwheSULE vbMc+5aOZIHbgp+1muwMCZlRZ8gM8s8nGj7OOpcMveq5PvDGsLv3W+usV70sASV4hunN rPM3O2XE2CuozWbLAzgiNvdJb7Ksxapkyt2zhPjW1cHo8PGqXBuFvCsP9NnMwMp1qQsE pgkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=1ELKsvqp/CVQlQh6V4i31lh01VunlKiC/zGB5BPQtSo=; b=TRKe5IvC3uz+Ewz4Xw0vaP2VGOAHuN324749ag7OI5F244QnWZ08HkDqJcBbG0d49R Kjzt/cGkjQbYseiTvkdC/rJjRpugYLul2Bv4RetVIJJKkn6P67PShgBZbFes3/xzxJF0 ptGCYw2nWPvtKAJby/3UhmttpwMmFXz84Mkvp5txBwBpMIMPk1GdqK58Cm9Dw8eBEJnm hghBch7r5bj3kuHOEX32qvfbj5eXgQdHfibX8+RutXsmyggv21kgOekBPP73eVt07ntU vw4B2poHb6Mq7EgVrHwRVuH5FEprgImyXxgVwQqAj1AYUZOhzTQJD0raSAad3xatLd1r OoJg== X-Gm-Message-State: AFqh2kq9zb8oAxd0/jff83+E0jSMNf5IWYN1NB+1ygFv+/b+XegbQLok uvRS7qIUZHQ5XBCsmv46fjOsstVOgLZE X-Google-Smtp-Source: AMrXdXsNGei0vSpM99XUx325C+Rc5uU5k9EeMbxPqJ35LB5KOmm89s3rVH+Ilz/sPOwbuVFTzg0a15Ex65ea X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:b317:a30:653a:18e5]) (user=irogers job=sendgmr) by 2002:a81:748a:0:b0:38f:abc4:fd47 with SMTP id p132-20020a81748a000000b0038fabc4fd47mr5945038ywc.170.1673015157713; Fri, 06 Jan 2023 06:25:57 -0800 (PST) Date: Fri, 6 Jan 2023 06:25:37 -0800 In-Reply-To: <20230106142537.607399-1-irogers@google.com> Message-Id: <20230106142537.607399-2-irogers@google.com> Mime-Version: 1.0 References: <20230106142537.607399-1-irogers@google.com> X-Mailer: git-send-email 2.39.0.314.g84b9a713c41-goog Subject: [PATCH v2 2/2] perf build: Fix build error when NO_LIBBPF=1 From: Ian Rogers To: Mike Leach , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, acme@kernel.org, irogers@google.com, peterz@infradead.org, mingo@redhat.com, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org The $(LIBBPF) target should only be a dependency of prepare if the static version of libbpf is needed. Add a new LIBBPF_STATIC variable that is set by Makefile.config. Use LIBBPF_STATIC to determine whether the CFLAGS, etc. need updating and for adding $(LIBBPF) as a prepare dependency. As Makefile.config isn't loaded for "clean" as a target, always set LIBBPF_OUTPUT regardless of whether it is needed for $(LIBBPF). This is done to minimize conditional logic for $(LIBBPF)-clean. This issue and an original fix was reported by Mike Leach in: https://lore.kernel.org/lkml/20230105172243.7238-1-mike.leach@linaro.org/ Fixes: 746bd29e348f ("perf build: Use tools/lib headers from install path") Reported-by: Mike Leach Signed-off-by: Ian Rogers Tested-by: Mike Leach --- tools/perf/Makefile.config | 2 ++ tools/perf/Makefile.perf | 21 ++++++++++++--------- 2 files changed, 14 insertions(+), 9 deletions(-) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index c2504c39bdcb..7c00ce0a7464 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -602,6 +602,8 @@ ifndef NO_LIBELF dummy := $(error Error: No libbpf devel library found, please install libbpf-devel); endif else + # Libbpf will be built as a static library from tools/lib/bpf. + LIBBPF_STATIC := 1 CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID CFLAGS += -DHAVE_LIBBPF_BPF_PROG_LOAD CFLAGS += -DHAVE_LIBBPF_BPF_OBJECT__NEXT_PROGRAM diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf index 13e7d26e77f0..4e370462e7e1 100644 --- a/tools/perf/Makefile.perf +++ b/tools/perf/Makefile.perf @@ -303,10 +303,12 @@ ifneq ($(OUTPUT),) else LIBBPF_OUTPUT = $(CURDIR)/libbpf endif -LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) -LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include -LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a -CFLAGS += -I$(LIBBPF_OUTPUT)/include +ifdef LIBBPF_STATIC + LIBBPF_DESTDIR = $(LIBBPF_OUTPUT) + LIBBPF_INCLUDE = $(LIBBPF_DESTDIR)/include + LIBBPF = $(LIBBPF_OUTPUT)/libbpf.a + CFLAGS += -I$(LIBBPF_OUTPUT)/include +endif ifneq ($(OUTPUT),) LIBSUBCMD_OUTPUT = $(abspath $(OUTPUT))/libsubcmd @@ -393,10 +395,8 @@ endif export PERL_PATH PERFLIBS = $(LIBAPI) $(LIBPERF) $(LIBSUBCMD) $(LIBSYMBOL) -ifndef NO_LIBBPF - ifndef LIBBPF_DYNAMIC - PERFLIBS += $(LIBBPF) - endif +ifdef LIBBPF_STATIC + PERFLIBS += $(LIBBPF) endif # We choose to avoid "if .. else if .. else .. endif endif" @@ -756,12 +756,15 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc $(arch_errno_name_array) \ $(sync_file_range_arrays) \ $(LIBAPI) \ - $(LIBBPF) \ $(LIBPERF) \ $(LIBSUBCMD) \ $(LIBSYMBOL) \ bpf-skel +ifdef LIBBPF_STATIC +prepare: $(LIBBPF) +endif + $(OUTPUT)%.o: %.c prepare FORCE $(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@