linux-kernel - Re: linux-next: build failure after merge of the kspp-gustavo tree

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Message-ID: <202110251234.0242EDDDC@keescook>
Date:   Mon, 25 Oct 2021 12:34:54 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the kspp-gustavo tree

On Mon, Oct 25, 2021 at 02:31:02PM -0500, Gustavo A. R. Silva wrote:
> On Mon, Oct 25, 2021 at 12:19:15PM -0700, Kees Cook wrote:
> > On Mon, Oct 25, 2021 at 12:55:34PM +1100, Stephen Rothwell wrote:
> > > Hi all,
> > > 
> > > On Mon, 18 Oct 2021 19:30:48 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > > >
> > > > Hi all,
> > > > 
> > > > After merging the kspp-gustavo tree, today's linux-next build (sparc64
> > > > defconfig) failed like this:
> > > > 
> > > > sparc64-linux-gcc: error: unrecognized command line option '-Wcast-function-type'; did you mean '-Wbad-function-cast'?
> > > > 
> > > > $ sparc64-linux-gcc --version
> > > > sparc64-linux-gcc (Custom f51944395b6aa154) 7.3.1 20180130
> > > > 
> > > > Caused by commit
> > > > 
> > > >   21078041965e ("Makefile: Enable -Wcast-function-type")
> > > > 
> > > > I have reverted that commit for today.
> > > 
> > > I am still reverting that commit ...
> > 
> > Gustavo, can you please switch this to using cc-option?
> 
> Yeah; I actually removed all the patches related to -Wcast-function-type
> from my -next branch a few minutes ago:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/log/?h=for-next/kspp
> 
> I'm currently working on resolving all these conflicts in a separate branch
> before merging them again in my -next tree.

Great; that sounds ideal. :) Thank you!

-Kees

-- 
Kees Cook