From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <ferruh.yigit@intel.com> Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id B522B1B5BF; Wed, 19 Dec 2018 21:53:37 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Dec 2018 12:53:36 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,374,1539673200"; d="scan'208";a="129267679" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.46]) ([10.237.221.46]) by fmsmga004.fm.intel.com with ESMTP; 19 Dec 2018 12:53:35 -0800 To: Thomas Monjalon <thomas@monjalon.net> Cc: dev@dpdk.org, stable@dpdk.org, Tom Barbette <barbette@kth.se>, Yongseok Koh <yskoh@mellanox.com>, Konstantin Ananyev <konstantin.ananyev@intel.com>, Bruce Richardson <bruce.richardson@intel.com> References: <20181219192904.61934-1-ferruh.yigit@intel.com> <1772993.ZpFq8iN2Ki@xps> <0ee900c3-57eb-9c89-0b0f-7f724c095d6b@intel.com> <1618982.fK5yx7iQXf@xps> From: Ferruh Yigit <ferruh.yigit@intel.com> Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 MIME-Version: 1.0 In-Reply-To: <1618982.fK5yx7iQXf@xps> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH] mk: fix scope of disabling AVX512F support X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> X-List-Received-Date: Wed, 19 Dec 2018 20:53:38 -0000 On 12/19/2018 8:28 PM, Thomas Monjalon wrote: > 19/12/2018 21:20, Ferruh Yigit: >> On 12/19/2018 7:58 PM, Thomas Monjalon wrote: >>> 19/12/2018 20:29, Ferruh Yigit: >>>> AVX512 was disabled for GCC because of Bugzilla issue 97 [1], >>>> the GCC defect submitted for the issue [2] highlighted that this is >>>> a known binutils version 2.30 issue. >>>> >>>> Narrowed the scope of no-avx512 to the this specific binutils version. >>> [...] >>>> # disable AVX512F support of gcc as a workaround for Bug 97 >>>> ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) >>>> +ifneq ($(filter 2.30%,$(LD_VERSION)),) >>>> MACHINE_CFLAGS += -mno-avx512f >>> >>> I think we should print a warning here. >>> There is a function $(warning) or $(info) for such case. >> >> I can add but it prints warning per component, so it prints a lot. > > I think we can choose to print only when compiling EAL > by checking $(findstring eal,$(lastword $(MAKEFILE_LIST))) Thanks for hint, I will use it. > > One more comment: it would be good to have this fix with meson too. Agreed, only I am not quite sure how to fix it in meson.