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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 C4B8FC2BB85 for ; Thu, 16 Apr 2020 15:11:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 980B2214AF for ; Thu, 16 Apr 2020 15:11:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587049895; bh=OX08Yy+S0/dVbFy6XcBFg78t8CZ/ZdRHwjDiG4BWfVM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=rrlwV22q+pfxhtrdbwrHm9pF6LqhK9Zcwbbetmp8BU4FspoVm50nswQ7iYbxLYwJ1 tC0IQIEtlDM9AHpx3JC6hA9n6DNIIg8lwz2RaFqNkKgPtF3pK5OJ2X2lhChhLJyZCV h1zEN0ohEXWDL2wYfrK6mrMGkbtaJ9FYdeEI2oMM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389700AbgDPPLe (ORCPT ); Thu, 16 Apr 2020 11:11:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:36224 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732677AbgDPNuR (ORCPT ); Thu, 16 Apr 2020 09:50:17 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1967220732; Thu, 16 Apr 2020 13:50:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587045016; bh=OX08Yy+S0/dVbFy6XcBFg78t8CZ/ZdRHwjDiG4BWfVM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TIx8u/QMCC6vvYKUt2XG+deqpgfZNbPUzyk42qQd3AnRFBUQ98QbEj+oj4Uu/0J7x Hge/TFg6GFbql5rnd0vVikPDLFmpxQrWRsVJYGzwZOSQuT8lFSW0BNd7tLxKdlnqU4 8ZqWAy7Zl+qd/nxVE32H1m7cLFkHTX4/0lI1E61w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sam Lunt , He Zhe , Jiri Olsa , Alexander Shishkin , Mark Rutland , Namhyung Kim , Peter Zijlstra , trivial@kernel.org, stable@kernel.org, Arnaldo Carvalho de Melo Subject: [PATCH 5.4 195/232] perf tools: Support Python 3.8+ in Makefile Date: Thu, 16 Apr 2020 15:24:49 +0200 Message-Id: <20200416131339.582130882@linuxfoundation.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200416131316.640996080@linuxfoundation.org> References: <20200416131316.640996080@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sam Lunt commit b9c9ce4e598e012ca7c1813fae2f4d02395807de upstream. Python 3.8 changed the output of 'python-config --ldflags' to no longer include the '-lpythonX.Y' flag (this apparently fixed an issue loading modules with a statically linked Python executable). The libpython feature check in linux/build/feature fails if the Python library is not included in FEATURE_CHECK_LDFLAGS-libpython variable. This adds a check in the Makefile to determine if PYTHON_CONFIG accepts the '--embed' flag and passes that flag alongside '--ldflags' if so. tools/perf is the only place the libpython feature check is used. Signed-off-by: Sam Lunt Tested-by: He Zhe Link: http://lore.kernel.org/lkml/c56be2e1-8111-9dfe-8298-f7d0f9ab7431@windriver.com Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: trivial@kernel.org Cc: stable@kernel.org Link: http://lore.kernel.org/lkml/20200131181123.tmamivhq4b7uqasr@gmail.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/perf/Makefile.config | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -228,8 +228,17 @@ strip-libs = $(filter-out -l%,$(1)) PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG)) +# Python 3.8 changed the output of `python-config --ldflags` to not include the +# '-lpythonX.Y' flag unless '--embed' is also passed. The feature check for +# libpython fails if that flag is not included in LDFLAGS +ifeq ($(shell $(PYTHON_CONFIG_SQ) --ldflags --embed 2>&1 1>/dev/null; echo $$?), 0) + PYTHON_CONFIG_LDFLAGS := --ldflags --embed +else + PYTHON_CONFIG_LDFLAGS := --ldflags +endif + ifdef PYTHON_CONFIG - PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null) + PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null) PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS)) PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)