From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM01-SN1-obe.outbound.protection.outlook.com (mail-sn1nam01on0089.outbound.protection.outlook.com [104.47.32.89]) by dpdk.org (Postfix) with ESMTP id 923A223B for ; Wed, 7 Jun 2017 11:27:59 +0200 (CEST) Received: from MWHPR03CA0027.namprd03.prod.outlook.com (10.174.173.144) by BN1PR03MB171.namprd03.prod.outlook.com (10.255.200.150) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1143.10; Wed, 7 Jun 2017 09:27:58 +0000 Received: from BN1BFFO11FD040.protection.gbl (2a01:111:f400:7c10::1:185) by MWHPR03CA0027.outlook.office365.com (2603:10b6:301:3b::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1157.12 via Frontend Transport; Wed, 7 Jun 2017 09:27:57 +0000 Authentication-Results: spf=fail (sender IP is 192.88.168.50) smtp.mailfrom=nxp.com; intel.com; dkim=none (message not signed) header.d=none;intel.com; dmarc=fail action=none header.from=nxp.com; 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24:7P8t7uH3MXJNCIJOgJLjOngmubXnzWDOXTSKIcVxOwmDWjSJj0wv8CKr+F4/QwDX4IodgVbNzm6MrdrZBpU05I7E1dk/ntpE+qcFrJbeqHQ= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1; BN1PR03MB171; 7:X+aQmO84zJHvWImwJHzGqZY9CviYobrBycFeh0CeFUWzjaBfnY3f5aHjzqwYz+FT8Eh/31XgX0lj2i0vFeNPRwF3CaLHRCF0d5dDVRDARV2ovtR6DV7VybiHODhvGrtV+0jk3MtK2Z0Z9MyOR6jYZ+OpqQ9Fl7IJ3giFGhU/Y1lDxI+YBUIL72wrdLdnFEsCBAdvf5nGFqxE57LHjVJuuQ4WbjWzL/1/3dJGAFICaHD/NrGNNFC9IeUq8uzdnQ6j/BlEQTRB/B7M32GCIQzUt5v59mCxbYSWaKqmkPPTCEfok/P9ayTq/QNGrWZWVtcwZH/xVF0ktJiNvWRDpcGRAg== X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jun 2017 09:27:56.0802 (UTC) X-MS-Exchange-CrossTenant-Id: 5afe0b00-7697-4969-b663-5eab37d5f47e X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5afe0b00-7697-4969-b663-5eab37d5f47e; Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN1PR03MB171 Subject: Re: [dpdk-dev] [PATCH v2 1/2] mk: allow use of environment var for make config X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Jun 2017 09:28:00 -0000 Hello David, On Wednesday 07 June 2017 02:09 PM, Hunt, David wrote: > Shreyansh, > > I found an issue (or two) with this part of the patch, and have a > proposed solution. > > 1. RTE_TARGET originally had a different meaning. It was used for making > examples, specifying the target directory of where the SDK was built. > It's not good to re-purpose this for something else, as I'm doing in > this patch. (even though I'm not sure that variable is suitably named in > the first place, but that's a different issue). Even I didn't realize this until you highlighted here. > 2. If we set RTE_TARGET on the environment, we will break the 'make -C > examples/', unless we set RTE_TARGET to be something else (i.e. > 'make -C examples/ RTE_TARGET=build'). One value for making DPDK, > and another for building examples. It's confusing to the user. Agree about re-using RTE_TARGET is breaking existing assumption about its use. > > An alternative patch would be as follows: > > RTE_CONFIG_TEMPLATE := > ifdef T > *-ifeq ("$(origin T)", "command line")* > RTE_CONFIG_TEMPLATE := $(RTE_SRCDIR)/config/defconfig_$(T) > *-endif** > *endif > export RTE_CONFIG_TEMPLATE So, that would mean, user would do either of the following: make T=