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Date: Thu, 27 May 2010 12:31:23 +0800 From: Américo Wang <xiyou.wangcong@...il.com> To: Jaswinder Singh Rajput <jaswinderlinux@...il.com> Cc: "Rafael J. Wysocki" <rjw@...k.pl>, Sam Ravnborg <sam@...nborg.org>, Ingo Molnar <mingo@...e.hu>, Andrew Morton <akpm@...ux-foundation.org>, the arch/x86 maintainers <x86@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: config automatically switches from 32-bit to 64-bit for x86 On Thu, May 27, 2010 at 09:39:51AM +0530, Jaswinder Singh Rajput wrote: >Hello Rafael, > >On Thu, May 27, 2010 at 5:43 AM, Rafael J. Wysocki <rjw@...k.pl> wrote: >> On Thursday 27 May 2010, Jaswinder Singh Rajput wrote: >>> Hello, >>> >>> I am trying to build 32 bit kernel image on 64-bit machine but after >>> 'make menuconfig' it automatically switches 32-bit to 64-bit. >> >> Try 'linux32 make menuconfig' and 'linux32 make'. >> > >Yes, this works :-) I think 'make ARCH=i386 menuconfig' also works. > >But I wonder then what is the point/use of CONFIG_X86_32 if compiler >is not listening to it. > >Logically compiler should set appropriate flags based on .config settings. > It's not compiler, it's kbuild, kbuild tries to determine the arch by 'uname -m'. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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