From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 906DDC4646D for ; Wed, 15 Aug 2018 12:38:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BA8BA215B2 for ; Wed, 15 Aug 2018 12:38:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA8BA215B2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ACULAB.COM Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729200AbeHOPar convert rfc822-to-8bit (ORCPT ); Wed, 15 Aug 2018 11:30:47 -0400 Received: from eu-smtp-delivery-211.mimecast.com ([207.82.80.211]:40894 "EHLO eu-smtp-delivery-211.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727141AbeHOPar (ORCPT ); Wed, 15 Aug 2018 11:30:47 -0400 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by eu-smtp-1.mimecast.com with ESMTP id uk-mta-146-2vGXju2mPIqWmwsbvfnF3Q-1; Wed, 15 Aug 2018 13:38:43 +0100 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 15 Aug 2018 13:40:22 +0100 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Wed, 15 Aug 2018 13:40:22 +0100 From: David Laight To: 'Guenter Roeck' , "linux-kernel@vger.kernel.org" CC: Rik van Riel , Mike Galbraith , "Dave Hansen" , Linus Torvalds , Andrew Morton Subject: RE: Build failures with gcc 4.5 and older Thread-Topic: Build failures with gcc 4.5 and older Thread-Index: AQHUM/HAiGfsyFkD4UmbPfzcSwB5naTAwY9Q Date: Wed, 15 Aug 2018 12:40:22 +0000 Message-ID: References: <20180814170904.GA12768@roeck-us.net> In-Reply-To: <20180814170904.GA12768@roeck-us.net> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.33] MIME-Version: 1.0 X-MC-Unique: 2vGXju2mPIqWmwsbvfnF3Q-1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guenter Roeck > Sent: 14 August 2018 18:09 ... > Does that mean that gcc 4.5 and older are now officially no longer > supported for compiling the kernel ? Never mind the version of gcc, the x86 kernel doesn't build with the default kernel options because the ORC unwinder hits a bug in libelf (in objtool) that was only fixed late last year. It isn't even obvious from the build log what has gone wrong. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)