linux-kernel - Re: [PATCH] compiler/gcc: Raise minimum GCC version for kernel builds to 4.8

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Message-ID: <20200526153004.GA74229@roeck-us.net>
Date:   Tue, 26 May 2020 08:30:04 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Will Deacon <will@...nel.org>
Cc:     Brian Cain <bcain@...eaurora.org>, linux-hexagon@...r.kernel.org,
        linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH] compiler/gcc: Raise minimum GCC version for kernel
 builds to 4.8

On Mon, May 11, 2020 at 09:41:37PM +0100, Will Deacon wrote:
> It is very rare to see versions of GCC prior to 4.8 being used to build
> the mainline kernel. These old compilers are also known to have codegen
> issues which can lead to silent miscompilation:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58145
> 
> Raise the minimum GCC version to 4.8 for building the kernel and remove
> some tautological Kconfig dependencies as a consequence.

My hexagon compiler is v4.6.1, and I have been unable to find a more
recent version. Does anyone happen to have a pointer to a hexagon toolchain
with gcc 4.8 or later ?

Thanks,
Guenter