linux-kernel - Re: [PATCH 5/5] x86,vdso: Create .build-id links for unstripped vdso files

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Message-ID: <CALCETrVfo0YMosPLANDyfDcBdHWNCuMhYJu666LXLHDYrkD=cg@mail.gmail.com>
Date:	Thu, 19 Jun 2014 16:59:53 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Josh Boyer <jwboyer@...oraproject.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/5] x86,vdso: Create .build-id links for unstripped vdso files

On Thu, Jun 19, 2014 at 3:46 PM, H. Peter Anvin <hpa@...or.com> wrote:
> On 06/18/2014 03:59 PM, Andy Lutomirski wrote:
>>
>> This may break make vdso_install with binutils before 2.17.50.0.17.
>> On the other hand, make vdso_install was probably never useful with
>> earlier binutils, since the installed files are AFAIK completely
>> useless without build-id.
>>
>
> How does it fail?

If --build-id=none on modern binutils accurately replicates old
binutils, it fails by silently creating a broken symlink called
.debug.  If you want this patch for 3.16, I can send a better version
that just doesn't create the links on old binutils.

>
>         -hpa
>
>



-- 
Andy Lutomirski
AMA Capital Management, LLC
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