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 X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7920BC43387 for ; Thu, 3 Jan 2019 13:11:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 453962070C for ; Thu, 3 Jan 2019 13:11:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730815AbfACNLi (ORCPT ); Thu, 3 Jan 2019 08:11:38 -0500 Received: from terminus.zytor.com ([198.137.202.136]:60421 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728474AbfACNLh (ORCPT ); Thu, 3 Jan 2019 08:11:37 -0500 Received: from terminus.zytor.com (localhost [127.0.0.1]) by terminus.zytor.com (8.15.2/8.15.2) with ESMTPS id x03DBGbZ1383761 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 3 Jan 2019 05:11:16 -0800 Received: (from tipbot@localhost) by terminus.zytor.com (8.15.2/8.15.2/Submit) id x03DBGX61383758; Thu, 3 Jan 2019 05:11:16 -0800 Date: Thu, 3 Jan 2019 05:11:16 -0800 X-Authentication-Warning: terminus.zytor.com: tipbot set sender to tipbot@zytor.com using -f From: tip-bot for Stanislav Fomichev Message-ID: Cc: mathieu.poirier@linaro.org, alexander.shishkin@linux.intel.com, acme@redhat.com, mingo@kernel.org, sdf@google.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, namhyung@kernel.org, jolsa@kernel.org, peterz@infradead.org, hpa@zytor.com Reply-To: linux-kernel@vger.kernel.org, sdf@google.com, tglx@linutronix.de, namhyung@kernel.org, hpa@zytor.com, peterz@infradead.org, jolsa@kernel.org, mathieu.poirier@linaro.org, alexander.shishkin@linux.intel.com, acme@redhat.com, mingo@kernel.org In-Reply-To: <4dfc634cfcfb236883971b5107cf3c28ec8a31be.1542328222.git.sdf@google.com> References: <4dfc634cfcfb236883971b5107cf3c28ec8a31be.1542328222.git.sdf@google.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf build: Don't unconditionally link the libbfd feature test to -liberty and -lz Git-Commit-ID: 14541b1e7e723859ff2c75c6fc10cdbbec6b8c34 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 14541b1e7e723859ff2c75c6fc10cdbbec6b8c34 Gitweb: https://git.kernel.org/tip/14541b1e7e723859ff2c75c6fc10cdbbec6b8c34 Author: Stanislav Fomichev AuthorDate: Thu, 15 Nov 2018 16:32:01 -0800 Committer: Arnaldo Carvalho de Melo CommitDate: Fri, 21 Dec 2018 09:42:46 -0300 perf build: Don't unconditionally link the libbfd feature test to -liberty and -lz Current libbfd feature test unconditionally links against -liberty and -lz. While it's required on some systems (e.g. opensuse), it's completely unnecessary on the others, where only -lbdf is sufficient (debian). This patch streamlines (and renames) the following feature checks: feature-libbfd - only link against -lbfd (debian), see commit 2cf9040714f3 ("perf tools: Fix bfd dependency libraries detection") feature-libbfd-liberty - link against -lbfd and -liberty feature-libbfd-liberty-z - link against -lbfd, -liberty and -lz (opensuse), see commit 280e7c48c3b8 ("perf tools: fix BFD detection on opensuse") (feature-liberty{,-z} were renamed to feature-libbfd-liberty{,z} for clarity) The main motivation is to fix this feature test for bpftool which is currently broken on debian (libbfd feature shows OFF, but we still unconditionally link against -lbfd and it works). Tested on debian with only -lbfd installed (without -liberty); I'd appreciate if somebody on the other systems can test this new detection method. Signed-off-by: Stanislav Fomichev Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/4dfc634cfcfb236883971b5107cf3c28ec8a31be.1542328222.git.sdf@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/Makefile.feature | 4 ++-- tools/build/feature/Makefile | 10 +++++----- tools/perf/Makefile.config | 44 +++++++++++++++++++++++--------------------- 3 files changed, 30 insertions(+), 28 deletions(-) diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index d47b8f73e2e7..5467c6bf9ceb 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -82,8 +82,8 @@ FEATURE_TESTS_EXTRA := \ cplus-demangle \ hello \ libbabeltrace \ - liberty \ - liberty-z \ + libbfd-liberty \ + libbfd-liberty-z \ libunwind-debug-frame \ libunwind-debug-frame-arm \ libunwind-debug-frame-aarch64 \ diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 2dbcc0d00f52..7ceb4441b627 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -17,8 +17,8 @@ FILES= \ test-libbfd.bin \ test-disassembler-four-args.bin \ test-reallocarray.bin \ - test-liberty.bin \ - test-liberty-z.bin \ + test-libbfd-liberty.bin \ + test-libbfd-liberty-z.bin \ test-cplus-demangle.bin \ test-libelf.bin \ test-libelf-getphdrnum.bin \ @@ -210,7 +210,7 @@ $(OUTPUT)test-libpython-version.bin: $(BUILD) $(OUTPUT)test-libbfd.bin: - $(BUILD) -DPACKAGE='"perf"' -lbfd -lz -liberty -ldl + $(BUILD) -DPACKAGE='"perf"' -lbfd -ldl $(OUTPUT)test-disassembler-four-args.bin: $(BUILD) -DPACKAGE='"perf"' -lbfd -lopcodes @@ -218,10 +218,10 @@ $(OUTPUT)test-disassembler-four-args.bin: $(OUTPUT)test-reallocarray.bin: $(BUILD) -$(OUTPUT)test-liberty.bin: +$(OUTPUT)test-libbfd-liberty.bin: $(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -$(OUTPUT)test-liberty-z.bin: +$(OUTPUT)test-libbfd-liberty-z.bin: $(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -lz $(OUTPUT)test-cplus-demangle.bin: diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 07c1857c3d7a..b441c88cafa1 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -702,18 +702,20 @@ endif ifeq ($(feature-libbfd), 1) EXTLIBS += -lbfd +else + # we are on a system that requires -liberty and (maybe) -lz + # to link against -lbfd; test each case individually here # call all detections now so we get correct # status in VF output - $(call feature_check,liberty) - $(call feature_check,liberty-z) - $(call feature_check,cplus-demangle) + $(call feature_check,libbfd-liberty) + $(call feature_check,libbfd-liberty-z) - ifeq ($(feature-liberty), 1) - EXTLIBS += -liberty + ifeq ($(feature-libbfd-liberty), 1) + EXTLIBS += -lbfd -liberty else - ifeq ($(feature-liberty-z), 1) - EXTLIBS += -liberty -lz + ifeq ($(feature-libbfd-liberty-z), 1) + EXTLIBS += -lbfd -liberty -lz endif endif endif @@ -723,24 +725,24 @@ ifdef NO_DEMANGLE else ifdef HAVE_CPLUS_DEMANGLE_SUPPORT EXTLIBS += -liberty - CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT else - ifneq ($(feature-libbfd), 1) - ifneq ($(feature-liberty), 1) - ifneq ($(feature-liberty-z), 1) - # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT - # or any of 'bfd iberty z' trinity - ifeq ($(feature-cplus-demangle), 1) - EXTLIBS += -liberty - CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT - else - msg := $(warning No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling) - CFLAGS += -DNO_DEMANGLE - endif - endif + ifeq ($(filter -liberty,$(EXTLIBS)),) + $(call feature_check,cplus-demangle) + + # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT + # or any of 'bfd iberty z' trinity + ifeq ($(feature-cplus-demangle), 1) + EXTLIBS += -liberty + else + msg := $(warning No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling) + CFLAGS += -DNO_DEMANGLE endif endif endif + + ifneq ($(filter -liberty,$(EXTLIBS)),) + CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT + endif endif ifneq ($(filter -lbfd,$(EXTLIBS)),)