From: Sven Joachim <svenjoac@gmx.de>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Joe Perches <joe@perches.com>,
Adam Borowski <kilobyte@angband.pl>,
Michal Marek <mmarek@suse.com>,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
ben@decadent.org.uk
Subject: Re: [RFC PATCH] kbuild: add -fno-PIE
Date: Wed, 26 Oct 2016 19:51:03 +0200 [thread overview]
Message-ID: <87eg33kni0.fsf@turtle.gmx.de> (raw)
In-Reply-To: <20161025073002.czwx2hysib77i7d5@linutronix.de> (Sebastian Andrzej Siewior's message of "Tue, 25 Oct 2016 09:30:02 +0200")
On 2016-10-25 09:30 +0200, Sebastian Andrzej Siewior wrote:
> On 2016-10-24 19:32:30 [+0200], Sven Joachim wrote:
>> On 2016-10-24 09:43 +0200, Sebastian Andrzej Siewior wrote:
>>
>> > On 2016-10-24 09:38:49 [+0200], Sven Joachim wrote:
>> >>
>> >> But make still fails with it. :-(
>> >
>> > try setting CONFIG_CC_STACKPROTECTOR_NONE=y and please let me know if
>> > the resulting kernel built with v3.2 gcc boots & works.
>>
>> Sorry, I don't have gcc 3.2 around, and my gcc 3.3 environment produces
>> assembler errors in arch/x86/entry/entry_32.S. Maybe binutils 2.15 is
>> not recent enough anymore?
I have done a few more tests, and I can confirm that binutils 2.17 is
the oldest version that works. Also, I have succeeded installing gcc
3.2 in a Debian 4.0 chroot now.
> so we use stone age gcc but take latest binutils and kernel? What about
> lifting the limit of gcc 3.2?
Would probably make sense, since gcc 3.2 cannot compile kernel/bounds.c,
at least not on x86.
,----
| CC kernel/bounds.s
| In file included from /tmp/linux/arch/x86/include/asm/bitops.h:512,
| from include/linux/bitops.h:22,
| from include/linux/kernel.h:10,
| from include/asm-generic/bug.h:13,
| from /tmp/linux/arch/x86/include/asm/bug.h:38,
| from include/linux/bug.h:4,
| from include/linux/page-flags.h:9,
| from kernel/bounds.c:9:
| /tmp/linux/arch/x86/include/asm/arch_hweight.h: In function `__arch_hweight32':
| /tmp/linux/arch/x86/include/asm/arch_hweight.h:29: syntax error before string constant
| make[1]: *** [kernel/bounds.s] Error 1
`----
Building with gcc 3.3 is apparently still possible, although it produces
tons of warnings and a modpost section mismatch. Still, requiring gcc
4.1 or newer would not be unreasonable, I think (still released a few
months earlier than binutils 2.17).
Cheers,
Sven
next prev parent reply other threads:[~2016-10-26 17:52 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-21 11:16 [RFC PATCH] kbuild: add -fno-PIE Sebastian Andrzej Siewior
2016-10-21 21:21 ` Adam Borowski
2016-10-23 16:19 ` Sven Joachim
2016-10-23 19:23 ` Joe Perches
2016-10-24 7:38 ` Sven Joachim
2016-10-24 7:43 ` Sebastian Andrzej Siewior
2016-10-24 17:32 ` Sven Joachim
2016-10-24 17:48 ` Joe Perches
2016-10-25 7:30 ` Sebastian Andrzej Siewior
2016-10-26 17:51 ` Sven Joachim [this message]
2016-10-27 7:28 ` Sebastian Andrzej Siewior
2016-10-28 23:00 ` Andrew Morton
2016-10-29 10:10 ` Tomas Janousek
2016-10-29 17:03 ` Sven Joachim
2016-10-29 19:21 ` Tomas Janousek
2016-10-29 21:18 ` Sven Joachim
2016-10-24 9:57 ` Joe Perches
2016-10-27 17:09 ` Shuah Khan
2016-10-28 8:09 ` Sebastian Andrzej Siewior
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87eg33kni0.fsf@turtle.gmx.de \
--to=svenjoac@gmx.de \
--cc=ben@decadent.org.uk \
--cc=bigeasy@linutronix.de \
--cc=joe@perches.com \
--cc=kilobyte@angband.pl \
--cc=linux-kbuild@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mmarek@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).