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From: David Laight <David.Laight@ACULAB.COM>
To: 'Guenter Roeck' <linux@roeck-us.net>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: Rik van Riel <riel@surriel.com>, Mike Galbraith <efault@gmx.de>,
	"Dave Hansen" <dave.hansen@intel.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: RE: Build failures with gcc 4.5 and older
Date: Wed, 15 Aug 2018 12:40:22 +0000	[thread overview]
Message-ID: <aa4bedb7b1af45c59ff4e61f3f199287@AcuMS.aculab.com> (raw)
In-Reply-To: <20180814170904.GA12768@roeck-us.net>

From: Guenter Roeck
> Sent: 14 August 2018 18:09
...
> Does that mean that gcc 4.5 and older are now officially no longer
> supported for compiling the kernel ?

Never mind the version of gcc, the x86 kernel doesn't build with the
default kernel options because the ORC unwinder hits a bug in libelf
(in objtool) that was only fixed late last year.

It isn't even obvious from the build log what has gone wrong.

	David

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Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)


  parent reply	other threads:[~2018-08-15 12:38 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-14 17:09 Build failures with gcc 4.5 and older Guenter Roeck
2018-08-14 17:20 ` Linus Torvalds
2018-08-14 17:36   ` Guenter Roeck
2018-08-14 20:19     ` Tony Luck
2018-08-15 16:09       ` Tony Luck
2018-08-15 16:34         ` Linus Torvalds
2018-08-16  0:27           ` Guenter Roeck
2018-08-15 16:49         ` Guenter Roeck
2018-08-14 17:48 ` Joe Perches
2018-08-19 21:23   ` Kees Cook
2018-08-20 17:46   ` Nick Desaulniers
2018-08-20 18:34     ` Linus Torvalds
2018-08-14 21:36 ` Andrew Morton
2018-08-14 22:15   ` Guenter Roeck
2018-08-14 23:02     ` Andrew Morton
2018-08-14 23:20       ` Linus Torvalds
2018-08-15  1:02         ` Guenter Roeck
2018-08-20 14:53           ` Thomas Gleixner
2018-08-20 16:00             ` Arnd Bergmann
2018-08-15 12:40 ` David Laight [this message]
2018-08-15 15:44   ` Linus Torvalds
2018-08-15 16:18     ` David Laight
2018-08-15 16:33       ` Linus Torvalds
2018-08-16  9:17         ` David Laight

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