linux-hardening - Re: [PATCH] Documentation/Kbuild: Remove references to gcc-plugin.sh

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Date:   Sat, 23 Jan 2021 17:40:13 +0100
From:   Robert Karszniewicz <avoidr@...teo.de>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     Robert Karszniewicz <r.karszniewicz@...tec.de>,
        Kees Cook <keescook@...omium.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Jonathan Corbet <corbet@....net>,
        Philipp Rudo <prudo@...ux.ibm.com>,
        linux-hardening@...r.kernel.org,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH] Documentation/Kbuild: Remove references to gcc-plugin.sh

On Sat, Jan 23, 2021 at 10:17:59PM +0900, Masahiro Yamada wrote:
> On Sat, Jan 23, 2021 at 3:19 AM Robert Karszniewicz
> <r.karszniewicz@...tec.de> wrote:
> >
> > gcc-plugin.sh has been removed in commit
> > 1e860048c53e ("gcc-plugins: simplify GCC plugin-dev capability test").
> >
> > Signed-off-by: Robert Karszniewicz <r.karszniewicz@...tec.de>
> > ---
> >  Documentation/kbuild/gcc-plugins.rst |  6 ------
> >  scripts/dummy-tools/gcc              | 15 ---------------
> >  2 files changed, 21 deletions(-)
> >
> > [...]
> > diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc
> > index 33487e99d83e..a484de576e6f 100755
> > --- a/scripts/dummy-tools/gcc
> > +++ b/scripts/dummy-tools/gcc
> > @@ -74,18 +74,3 @@ if arg_contain -S "$@"; then
> >                 exit 0
> >         fi
> >  fi
> > -
> > -# For scripts/gcc-plugin.sh
> > -if arg_contain -print-file-name=plugin "$@"; then
> > -       plugin_dir=$(mktemp -d)
> > -
> > -       sed -n 's/.*#include "\(.*\)"/\1/p' $(dirname $0)/../gcc-plugins/gcc-common.h |
> > -       while read header
> > -       do
> > -               mkdir -p $plugin_dir/include/$(dirname $header)
> > -               touch $plugin_dir/include/$header
> > -       done
> > -
> > -       echo $plugin_dir
> > -       exit 0
> > -fi
> 
> 
> Well, it is wrong to remove this hunk entirely.
> It would break the ability to enable GCC_PLUGINS.
> 
> I will simplify this part.
> https://lore.kernel.org/patchwork/patch/1369968/
> 
> 
> I took the only change to Documentation/kbuild/gcc-plugins.rst
> from your patch but this document contains more stale info.
> 
> https://lore.kernel.org/patchwork/patch/1370008/

I see, thanks for letting me know,

Robert