From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 8F3F45A9D for ; Mon, 30 Mar 2015 13:07:38 +0200 (CEST) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 30 Mar 2015 04:07:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,493,1422950400"; d="scan'208";a="700069894" Received: from irvmail001.ir.intel.com ([163.33.26.43]) by fmsmga002.fm.intel.com with ESMTP; 30 Mar 2015 04:07:37 -0700 Received: from sivswdev02.ir.intel.com (sivswdev02.ir.intel.com [10.237.217.46]) by irvmail001.ir.intel.com (8.14.3/8.13.6/MailSET/Hub) with ESMTP id t2UB6G6C011406 for ; Mon, 30 Mar 2015 12:06:16 +0100 Received: from sivswdev02.ir.intel.com (localhost [127.0.0.1]) by sivswdev02.ir.intel.com with ESMTP id t2UB6Grl031131 for ; Mon, 30 Mar 2015 12:06:16 +0100 Received: (from pdelarax@localhost) by sivswdev02.ir.intel.com with id t2UB6GHX031127 for dev@dpdk.org; Mon, 30 Mar 2015 12:06:16 +0100 From: Pablo de Lara To: dev@dpdk.org Date: Mon, 30 Mar 2015 12:06:16 +0100 Message-Id: <1427713576-31094-1-git-send-email-pablo.de.lara.guarch@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1427397455-30368-1-git-send-email-pablo.de.lara.guarch@intel.com> References: <1427397455-30368-1-git-send-email-pablo.de.lara.guarch@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v2] DPDK does not build on gcc 4.4, as it complains due to strict-aliasing rules in virtual_pmd and link_bonding_mode4 tests, with no errors in next gcc versions: X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Mar 2015 11:07:39 -0000 CC virtual_pmd.o CC test_link_bonding_mode4.o cc1: warnings being treated as errors /root/dpdk/app/test/test_link_bonding_mode4.c: In function ‘test_mode4_expired’: /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:645: error: dereferencing pointer ‘pkt.409’ does break strict-aliasing rules /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:729: error: dereferencing pointer ‘pkt.409’ does break strict-aliasing rules ... cc1: warnings being treated as errors /root/dpdk/app/test/virtual_pmd.c: In function ‘virtual_ethdev_stats_reset’: /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:645: error: dereferencing pointer ‘pkt.338’ does break strict-aliasing rules /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:729: error: dereferencing pointer ‘pkt.338’ does break strict-aliasing rules This patch fixes the compilation by disabling these warnings. Changes in v2: Added missing gcc version check (checking if gcc 4.4 is present) Signed-off-by: Pablo de Lara --- app/test/Makefile | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/app/test/Makefile b/app/test/Makefile index 4aca77c..9639a71 100644 --- a/app/test/Makefile +++ b/app/test/Makefile @@ -158,6 +158,15 @@ CFLAGS_test_memcpy_perf.o += -fno-var-tracking-assignments endif endif +# Disable warnings of no-strict-aliasing in virtual_pmd +# and test_link_bonding_mode4 tests +ifeq ($(CC), gcc) +ifeq ($(shell test $(GCC_VERSION) -eq 44 && echo 1), 1) +CFLAGS_virtual_pmd.o += -Wno-strict-aliasing +CFLAGS_test_link_bonding_mode4.o += -Wno-strict-aliasing +endif +endif + # this application needs libraries first DEPDIRS-y += lib -- 1.7.4.1