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From:   Nick Desaulniers <ndesaulniers@google.com>
Date:   Tue, 19 Sep 2023 13:05:52 -0700
Message-ID: <CAKwvOdmUmLRMP0OUOJkPSKucn3NJTxz7uJGWfn83LX=gbZ-5Zw@mail.gmail.com>
Subject: Re: warning: unknown warning option '-Wrestrict'
To:     Philip Li <philip.li@intel.com>
Cc:     kernel test robot <lkp@intel.com>,
        Masahiro Yamada <masahiroy@kernel.org>, llvm@lists.linux.dev,
        oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
        Nathan Chancellor <nathan@kernel.org>
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On Tue, Sep 19, 2023 at 7:56=E2=80=AFAM Philip Li <philip.li@intel.com> wro=
te:
>
> On Tue, Sep 19, 2023 at 10:40:57PM +0800, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.=
git master
> > head:   2cf0f715623872823a72e451243bbf555d10d032
> > commit: feb843a469fb0ab00d2d23cfb9bcc379791011bb kbuild: add $(CLANG_FL=
AGS) to KBUILD_CPPFLAGS
> > date:   4 months ago
> > config: um-allnoconfig (https://download.01.org/0day-ci/archive/2023091=
9/202309192257.IAbw1lnx-lkp@intel.com/config)
> > compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.gi=
t 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
> > reproduce (this is a W=3D1 build): (https://download.01.org/0day-ci/arc=
hive/20230919/202309192257.IAbw1lnx-lkp@intel.com/reproduce)
> >
> > If you fix the issue in a separate patch/commit (i.e. not just a new ve=
rsion of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <lkp@intel.com>
> > | Closes: https://lore.kernel.org/oe-kbuild-all/202309192257.IAbw1lnx-l=
kp@intel.com/
> >
> > All warnings (new ones prefixed by >>):
>
> Sorry for the false report. Kindly ignore this.

No worries, I just checked `make LLVM=3D1 arch=3Dum -j128 allnoconfig all`
and had no issue.

>
> >
> > >> warning: unknown warning option '-Wrestrict' [-Wunknown-warning-opti=
on]
> > >> warning: unknown warning option '-Wformat-overflow'; did you mean '-=
Wshift-overflow'? [-Wunknown-warning-option]
> > >> warning: unknown warning option '-Wformat-truncation' [-Wunknown-war=
ning-option]
> > >> warning: unknown warning option '-Wstringop-overflow'; did you mean =
'-Wshift-overflow'? [-Wunknown-warning-option]
> >    arch/x86/um/user-offsets.c:17:6: warning: no previous prototype for =
function 'foo' [-Wmissing-prototypes]
> >       17 | void foo(void)
> >          |      ^
> >    arch/x86/um/user-offsets.c:17:1: note: declare 'static' if the funct=
ion is not intended to be used outside of this translation unit
> >       17 | void foo(void)
> >          | ^
> >          | static
> >    5 warnings generated.
> >    error: unknown warning option '-Wrestrict' [-Werror,-Wunknown-warnin=
g-option]
> >    error: unknown warning option '-Wformat-overflow'; did you mean '-Ws=
hift-overflow'? [-Werror,-Wunknown-warning-option]
> >    error: unknown warning option '-Wformat-truncation' [-Werror,-Wunkno=
wn-warning-option]
> >    error: unknown warning option '-Wstringop-overflow'; did you mean '-=
Wshift-overflow'? [-Werror,-Wunknown-warning-option]
> >    make[2]: *** [scripts/Makefile.build:252: scripts/mod/empty.o] Error=
 1
> >    error: unknown warning option '-Wrestrict' [-Werror,-Wunknown-warnin=
g-option]
> >    error: unknown warning option '-Wformat-overflow'; did you mean '-Ws=
hift-overflow'? [-Werror,-Wunknown-warning-option]
> >    error: unknown warning option '-Wformat-truncation' [-Werror,-Wunkno=
wn-warning-option]
> >    error: unknown warning option '-Wstringop-overflow'; did you mean '-=
Wshift-overflow'? [-Werror,-Wunknown-warning-option]
> >    make[2]: *** [scripts/Makefile.build:114: scripts/mod/devicetable-of=
fsets.s] Error 1
> >    make[2]: Target 'scripts/mod/' not remade because of errors.
> >    make[1]: *** [Makefile:1286: prepare0] Error 2
> >    make[1]: Target 'prepare' not remade because of errors.
> >    make: *** [Makefile:226: __sub-make] Error 2
> >    make: Target 'prepare' not remade because of errors.
> >
> > --
> > 0-DAY CI Kernel Test Service
> > https://github.com/intel/lkp-tests/wiki
> >
>


--=20
Thanks,
~Nick Desaulniers