linux-kernel - Re: linux/a.out.h is not exported to userspace

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Message-Id: <20080523003256.3ff82660.akpm@linux-foundation.org>
Date:	Fri, 23 May 2008 00:32:56 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Khem Raj <raj.khem@...il.com>
Cc:	k.shutemov@...il.com, linux-kernel@...r.kernel.org
Subject: Re: linux/a.out.h is not exported to userspace

On Fri, 16 May 2008 17:13:57 -0700 Khem Raj <raj.khem@...il.com> wrote:

> Hi,
> 
> Looking for a compile failure for a package on uclibc system using
> kernel-headers from 2.6.25 I found that linux/a.out.h is no more
> exported to userland anymore.
> 
> This commit below has disabled it from being exported. The commit Do not
> export asm/page.h during make headers_install so I was wondering if it
> was intended to unexport linux/a.out.h or not.
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ed7b1889da256977574663689b598d88950bbd23
> 
> 
> Looking at the patch from lkml post
> 
> http://linux.derkeiler.com/Mailing-Lists/Kernel/2007-10/msg08913.html
> 
> second hunk to include/linux/Kbuild was not applied which caused this
> problem.
> 
> I think I do not fall into Signed-off-by definition. I tested the
> following patch on 2.6.25.
> 
> Thanks
> 
> -Khem
> 
> Tested-by: Khem Raj <raj.khem@...il.com>
> 
> diff --git a/include/linux/Kbuild b/include/linux/Kbuild
> index b7d81b2..8a3d93e 100644
> --- a/include/linux/Kbuild
> +++ b/include/linux/Kbuild
> @@ -168,6 +168,7 @@ unifdef-y += acct.h
>  unifdef-y += adb.h
>  unifdef-y += adfs_fs.h
>  unifdef-y += agpgart.h
> +unifdef-y += a.out.h
>  unifdef-y += apm_bios.h
>  unifdef-y += atalk.h
>  unifdef-y += atmdev.h

This breaks `make headerscheck' on s390:

/usr/src/devel/usr/include/linux/a.out.h requires asm/a.out.h, which does not exist in exported headers

which might be an s390 problem.
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