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Thu, 29 Sep 2022 11:19:15 +0000 From: Ross Burton To: "danismostlikely@gmail.com" CC: OE-core , Daniel McGregor Subject: Re: [OE-core] [PATCH 2/3] gcc: set the default target arch Thread-Topic: [OE-core] [PATCH 2/3] gcc: set the default target arch Thread-Index: AQHY04egleefWE7NP0a5hcNaFxi24a32Q40A Date: Thu, 29 Sep 2022 11:19:15 +0000 Message-ID: <133AE478-7799-4555-9260-2706CF3E11E9@arm.com> References: <20220928221320.1763684-1-danismostlikely@gmail.com> <20220928221320.1763684-2-danismostlikely@gmail.com> In-Reply-To: <20220928221320.1763684-2-danismostlikely@gmail.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3696.120.41.1.1) Authentication-Results-Original: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=arm.com; x-ms-traffictypediagnostic: PA4PR08MB7411:EE_|AS8PR08MB6213:EE_|VE1EUR03FT040:EE_|PAVPR08MB9433:EE_ X-MS-Office365-Filtering-Correlation-Id: 1b62a788-17b9-4f76-3db1-08daa20c76e9 x-checkrecipientrouted: true nodisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0; 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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Sep 2022 11:19:24.3557 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1b62a788-17b9-4f76-3db1-08daa20c76e9 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: VE1EUR03FT040.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAVPR08MB9433 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Thu, 29 Sep 2022 11:19:35 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/171183 On 28 Sep 2022, at 23:13, Dan McGregor via lists.openembedded.org wrote: >=20 > From: Daniel McGregor >=20 > The default x86-64 architecture for target gcc (ie, the one in poky > build appliances) is native. Since we have a variety of build systems > it will occasionally produce instructions that don't work on all of > our development system. >=20 > Instead, set gcc's default architecture to the one specified in > TUNE_CC_ARCH, that guarantees that gcc-runtime and any binaries > produced are compatible with the target machine type. Can you explain the use-case here? These are target binaries, so why is th= e development system relevant? Ross=