linux-kernel - Re: [PATCH 20/23] gcc-plugins: always build plugins with C++

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Date:   Thu, 22 Feb 2018 19:45:41 +0100
From:   Emese Revfy <re.emese@...il.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     linux-kbuild@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Kees Cook <keescook@...omium.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Ulf Magnusson <ulfalizer@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        kernel-hardening@...ts.openwall.com, linux-kernel@...r.kernel.org,
        keescook@...omium.org, kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH 20/23] gcc-plugins: always build plugins with C++

On Sat, 17 Feb 2018 03:38:48 +0900
Masahiro Yamada <yamada.masahiro@...ionext.com> wrote:

> If the target compiler is GCC 4.8 or newer, plugins are compiled with
> HOSTCXX.  Otherwise, gcc-plugin.sh will select HOSTCC or HOSTCXX.
> 
> To simpily things, let's decide GCC 4.8 is the requirement for GCC
> pulgins.  With this, plugins are always built with HOSTCXX.  This is a
> feature of advanced users, so this requirement whould not be not a big
> issue.

I disagree with such a decision. I think the gcc plugins should compile
with older version because the kernel can be compiled with them too.
The distros use these older versions as well and I can very well imagine
that new plugins will extend these with backported features such as
my sancov plugin.

-- 
Emese