Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161064AbVLJUeX (ORCPT ); Sat, 10 Dec 2005 15:34:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161065AbVLJUeW (ORCPT ); Sat, 10 Dec 2005 15:34:22 -0500 Received: from smtp7.wanadoo.fr ([193.252.22.24]:275 "EHLO smtp7.wanadoo.fr") by vger.kernel.org with ESMTP id S1161064AbVLJUeW convert rfc822-to-8bit (ORCPT ); Sat, 10 Dec 2005 15:34:22 -0500 X-ME-UUID: 20051210203418775.BD5D618000AE@mwinf0707.wanadoo.fr Subject: Re: i386 -> x86_64 cross compile failure (binutils bug?) From: Xavier Bestel To: Lee Revell Cc: linux-kernel In-Reply-To: <1134178279.18432.55.camel@mindpipe> References: <1134154208.14363.8.camel@mindpipe> <1134168222.5270.1.camel@bip.parateam.prv> <1134178279.18432.55.camel@mindpipe> Content-Type: text/plain; charset=ISO-8859-15 Date: Sat, 10 Dec 2005 21:34:18 +0100 Message-Id: <1134246859.5192.1.camel@bip.parateam.prv> Mime-Version: 1.0 X-Mailer: Evolution 2.4.1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1638 Lines: 40 Le vendredi 09 d?cembre 2005 ? 20:31 -0500, Lee Revell a ?crit : > On Fri, 2005-12-09 at 23:43 +0100, Xavier Bestel wrote: > > Le vendredi 09 d?cembre 2005 ? 13:50 -0500, Lee Revell a ?crit : > > > I'm trying to build an x66-64 kernel on a 32 bit system (Ubuntu 5.10). > > > I added -m64 to the CFLAGS as per the gcc docs. > > > > Under debian 32bits with 64bits kernel, I just add -m64 somewhere in the > > main Makefile to rebuild my modules. Didn't try with a whole kernel > > though. > > The bug seems to be that the kernel build system does not grok biarch > toolchains - it really insists on a separate toolchain for i386 and > x86_64 even though the situation can be handled with selective use of > -m64. If I jsut add -m64 to everything then it fails when it gets to > the ia32 stuff. Yes, you shouldn't compile host executables with -m64, obviously. --- /usr/src/linux-headers-2.6.14-2/Makefile.old 2005-12-10 21:32:17.000000000 +0100 +++ /usr/src/linux-headers-2.6.14-2/Makefile 2005-11-17 14:26:02.000000000 +0100 @@ -352,7 +352,7 @@ CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ -fno-strict-aliasing -fno-common \ - -ffreestanding + -ffreestanding -m64 AFLAGS := -D__ASSEMBLY__ export VERSION PATCHLEVEL SUBLEVEL EXTRAVERSION LOCALVERSION KERNELRELEASE \ HTH, Xav - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/