From patchwork Wed Nov 18 07:53:50 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Kagstrom X-Patchwork-Id: 8969 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id E4143567E; Wed, 18 Nov 2015 08:53:58 +0100 (CET) Received: from ernst.netinsight.se (ernst.netinsight.se [194.16.221.21]) by dpdk.org (Postfix) with SMTP id 6EE415424 for ; Wed, 18 Nov 2015 08:53:58 +0100 (CET) Received: from miho (unverified [10.100.1.152]) by ernst.netinsight.se (EMWAC SMTPRS 0.83) with SMTP id ; Wed, 18 Nov 2015 08:53:50 +0100 Date: Wed, 18 Nov 2015 08:53:50 +0100 From: Simon Kagstrom To: olivier.matz@6wind.com, dev@dpdk.org Message-ID: <20151118085350.1247f3d5@miho> X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.27; x86_64-pc-linux-gnu) MIME-Version: 1.0 Subject: [dpdk-dev] [PATCH] mk: pass EXTRA_CFLAGS to AUTO_CPUFLAGS to enable local modifications 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" We have encountered a CPU where the AES-NI instruction set is disabled due to export restrictions. Since the build machine and target machine is different, using -native configs doesn't work, and on this CPU, the application refuses to run due to the AES CPU flags being amiss. The patch passes EXTRA_CFLAGS to the figure-out-cpu-flags helper, which allows us to add -mno-aes to the compile flags and resolve this problem. Signed-off-by: Simon Kagstrom --- mk/rte.cpuflags.mk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk index f595cd0..17da810 100644 --- a/mk/rte.cpuflags.mk +++ b/mk/rte.cpuflags.mk @@ -33,7 +33,7 @@ # used to set the RTE_CPUFLAG_* environment variables giving details # of what instruction sets the target cpu supports. -AUTO_CPUFLAGS := $(shell $(CC) $(MACHINE_CFLAGS) -dM -E - < /dev/null) +AUTO_CPUFLAGS := $(shell $(CC) $(EXTRA_CFLAGS) $(MACHINE_CFLAGS) -dM -E - < /dev/null) # adding flags to CPUFLAGS