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=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 ACCB8C55186 for ; Wed, 22 Apr 2020 10:11:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A02F2076E for ; Wed, 22 Apr 2020 10:11:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587550280; bh=b3/W7jcf3pRlbI3TaNKbiNoXM+9KitAJVtIo5w9oeAo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZPRuDxPGyjVjo3TFupUU5ZD8RIgH+NUDrBKcM70zqqG2TsN/B8pNgFKUJ0He/Zhbp qNeGYXTeLWf1L/iuBJ7Wf+PoJv5xLMhr3uj5co+J+T7+/M+1/ai5x1S2D1/Lsjwiiz ZYl5exfqYlcQziYBTn6PiAdmoMUeBsZrz91368EA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729193AbgDVKLT (ORCPT ); Wed, 22 Apr 2020 06:11:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:42654 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729170AbgDVKLQ (ORCPT ); Wed, 22 Apr 2020 06:11:16 -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 AD89D2075A; Wed, 22 Apr 2020 10:11:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587550275; bh=b3/W7jcf3pRlbI3TaNKbiNoXM+9KitAJVtIo5w9oeAo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ASTug0Xy6igg1jtPg51NzXlgkI654F2q2cu4cby7zRjL1bgu+ExusmpfjgURPplRn 967/x3KGkjNIkay6kWMVK/LSMt1irjJqa+LxonuW0oc9qrwApPUkgUlC4pwKdpST+h UKBfWXvrtBSrPmi7MXDF5AZoeYLZIzUU4o7AhC60= 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 4.14 080/199] perf tools: Support Python 3.8+ in Makefile Date: Wed, 22 Apr 2020 11:56:46 +0200 Message-Id: <20200422095106.117968848@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200422095057.806111593@linuxfoundation.org> References: <20200422095057.806111593@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 @@ -179,8 +179,17 @@ 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) --cflags 2>/dev/null)