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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
Thread-Topic: Build failures with gcc 4.5 and older
Thread-Index: AQHUM/HAiGfsyFkD4UmbPfzcSwB5naTAwY9Q
Date:   Wed, 15 Aug 2018 12:40:22 +0000
Message-ID: <aa4bedb7b1af45c59ff4e61f3f199287@AcuMS.aculab.com>
References: <20180814170904.GA12768@roeck-us.net>
In-Reply-To: <20180814170904.GA12768@roeck-us.net>
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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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