From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756896AbbDPH57 (ORCPT ); Thu, 16 Apr 2015 03:57:59 -0400 Received: from cantor2.suse.de ([195.135.220.15]:41111 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752251AbbDPH5v (ORCPT ); Thu, 16 Apr 2015 03:57:51 -0400 Message-ID: <552F6B7C.7020406@suse.cz> Date: Thu, 16 Apr 2015 09:57:48 +0200 From: Michal Marek User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Andi Kleen CC: akpm@linux-foundation.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Andi Kleen , Segher Boessenkool Subject: Re: [PATCH] Support gcc 6 for building References: <1429127143-31745-1-git-send-email-andi@firstfloor.org> In-Reply-To: <1429127143-31745-1-git-send-email-andi@firstfloor.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2015-04-15 21:45, Andi Kleen wrote: > From: Andi Kleen > > gcc recently switched to a new version number scheme, where every version > gets a new major version number. The current version is 5.x, the next 6.x, etc. > > The gcc git repository trunk branch just switched to report 6.x for the next > major release. > > This breaks the way Linux selects compiler-gccX.h based on the major > version. Every new version would require adding a new compiler-gccX.h file, > which wouldn't really scale. > > Let's assume that future gccs are fairly compatible (they are unlikely > to break anything Linux is relying on). So we can just keep using > compiler-gcc5.h, and select any specific differences with #if. Good idea. With the new scheme, we could also merge back compiler-gcc5.h and compiler-gcc4.h. The only difference is the KASAN_ABI_VERSION define. Michal