linux-kernel - Re: [uml-devel] User Mode Linux still doesn't build in 2.6.23-final.

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Date:	Mon, 22 Oct 2007 03:58:04 -0400 (EDT)
From:	"Robert P. J. Day" <rpjday@...shcourse.ca>
To:	WANG Cong <xiyou.wangcong@...il.com>
cc:	Sam Ravnborg <sam@...nborg.org>, Nix <nix@...eri.org.uk>,
	Al Viro <viro@....linux.org.uk>, Jeff Dike <jdike@...toit.com>,
	Paolo Giarrusso <p.giarrusso@...il.com>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, Rob Landley <rob@...dley.net>
Subject: Re: [uml-devel] User Mode Linux still doesn't build in 2.6.23-final.

On Mon, 22 Oct 2007, WANG Cong wrote:

> On Mon, Oct 22, 2007 at 08:59:43AM +0200, Sam Ravnborg wrote:
> >On Mon, Oct 22, 2007 at 02:52:02PM +0800, WANG Cong wrote:
> >> On Mon, Oct 22, 2007 at 07:42:33AM +0100, Nix wrote:
> >> >On 22 Oct 2007, WANG Cong uttered the following:
> >> >> I build UML for non-SMP x86. But I don't know about UML_NET_VDE. ;(
> >> >>
> >> >> Errors threw out by gcc (too many) are put here:
> >> >> 	http://wangcong.org/down/errors.txt
> >> >
> >> >It's hard to tell without LOCALE=C, but those are the sorts of results
> >> >I'd expect if you had run make {old,menu,x}config without specifying
> >> >ARCH=um, so you've configured for one architecture and are now trying
> >> >to build another.
> >> >
> >> >Where is the include/asm symlink pointing to in your build tree?
> >>
> >> $ ls -l include/asm
> >> lrwxrwxrwx 1 wangcong wangcong 6 2007-10-22 12:34 include/asm -> asm-um
> >>
> >> OK. Let me do the following:
> >>
> >> 	$ make mrproper
> >
> >Please try
> >make ARCH=um mrproper
> >
> >this will clean up the additional uml symlinks.
> >
>
> Hi, Sam, Al and others.
>
> I just followed what Sam told me, errors are much fewer this time,
> but still exist. Error messages are:
>
>   CC      arch/um/kernel/syscall.o
>   CC      arch/um/kernel/sysrq.o
> arch/um/kernel/sysrq.c: In function ÿÿshow_stackÿÿ:
> arch/um/kernel/sysrq.c:63: error: ÿÿUESPÿÿ undeclared (first use in this function)
> arch/um/kernel/sysrq.c:63: error: (Each undeclared identifier is reported only once
> arch/um/kernel/sysrq.c:63: error: for each function it appears in.)
> make[1]: *** [arch/um/kernel/sysrq.o] Error 1
> make: *** [arch/um/kernel] Error 2
>
> Or I missed something again?
>
> And I use `make defconfig ARCH=um' to generate .config, my tree
> is 2.6.23-git16 (Al, is this OK?).

that looks like a cut-and-paste error since the file
include/asm-um/arch/ptrace-abi.h opens with:

=====
#ifndef _ASM_X86_PTRACE_ABI_H
#define _ASM_X86_PTRACE_ABI_H

#ifdef __i386__

#define EBX 0
#define ECX 1
#define EDX 2
#define ESI 3
#define EDI 4
#define EBP 5
#define EAX 6
#define DS 7
#define ES 8
#define FS 9
#define GS 10
#define ORIG_EAX 11
#define EIP 12
#define CS  13
#define EFL 14
#define UESP 15
.....
=====

  somehow, that doesn't look right.

rday
-- 
========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

http://crashcourse.ca
========================================================================