linux-kernel - Re: Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support plugins, you should upgrade it to at least gcc 4.5

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Message-ID: <CAGXu5jJQ-r+Un9D6NPoT4nntDAVkkr07-4EDt2+bMqPUfGbX7A@mail.gmail.com>
Date:   Sat, 27 Aug 2016 09:28:38 -0400
From:   Kees Cook <keescook@...omium.org>
To:     kbuild test robot <fengguang.wu@...el.com>
Cc:     kbuild-all@...org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support
 plugins, you should upgrade it to at least gcc 4.5

Hi,

This appears to be "as expected": 4.4 gcc doesn't have either of those
features, so it correctly failed.

-Kees

On Sat, Aug 27, 2016 at 1:52 AM, kbuild test robot
<fengguang.wu@...el.com> wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   28687b935e93a9041a485b9ecdcab0e335f8eda5
> commit: ed58c0e9eefef517aa5a547b78658e2ab4422232 gcc-plugins: abort builds cleanly when not supported
> date:   3 weeks ago
> config: x86_64-randconfig-s1-08271305 (attached as .config)
> compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
> reproduce:
>         git checkout ed58c0e9eefef517aa5a547b78658e2ab4422232
>         # save the attached .config to linux build tree
>         make ARCH=x86_64
>
> All errors (new ones prefixed by >>):
>
>    scripts/Makefile.gcc-plugins:17: warning: cannot use CONFIG_KCOV: -fsanitize-coverage=trace-pc is not supported by compiler
>>> Cannot use CONFIG_GCC_PLUGINS: your gcc version does not support plugins, you should upgrade it to at least gcc 4.5
>    make[1]: *** [gcc-plugins-check] Error 1
>    make[1]: Target 'prepare' not remade because of errors.
>    make: *** [sub-make] Error 2
>
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation



-- 
Kees Cook
Nexus Security