From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH] meson: fix compilation with binutils version 2.30 Date: Thu, 17 Jan 2019 19:23:08 +0100 Message-ID: <2654509.CpMWhpLgrV@xps> References: <20190117171744.63455-1-harry.van.haaren@intel.com> <884f29ec-a85d-41f2-abd7-17b5bbeea3bb@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: dev@dpdk.org, Ferruh Yigit , bruce.richardson@intel.com To: Harry van Haaren Return-path: Received: from wout2-smtp.messagingengine.com (wout2-smtp.messagingengine.com [64.147.123.25]) by dpdk.org (Postfix) with ESMTP id 585672BA3 for ; Thu, 17 Jan 2019 19:23:12 +0100 (CET) In-Reply-To: <884f29ec-a85d-41f2-abd7-17b5bbeea3bb@intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 17/01/2019 18:23, Ferruh Yigit: > On 1/17/2019 5:17 PM, Harry van Haaren wrote: > > This commit reworks the checks for binutils 2.30 and how > > the flags to disable AVX512F are passed to the compiler. > > > > Previously the #define for including AVX512 code was set, > > while the -mno-avx512f argument was given to the compiler. > > This would cause gcc to correctly refuse to emit AVX512 > > instructions, but the rte_memcpy code that includes AVX512 > > optimizations was being added to the build. > > > > The check for binutils check is now moved to x86 as it is > > irrelevant for other architectures, and the -mno-avx512f > > flag is passed to a march_opts array in meson. As the > > -mno-avx512 flag is added earlier in the build, the code > > in rte_memcpy is no longer attempted to be compiled. > > > > This commit also adds a message print in the meson configure > > stage to alert the user of the workaround being employed. > > > > Fixes: a32ca9a4ebc1 ("mk: fix scope of disabling AVX512F support") > > > > Signed-off-by: Harry van Haaren > > Tested-by: Ferruh Yigit > > Thanks for the fix Harry. Applied (with message reworded as suggested), thanks