linux-kernel - Re: [masahiroy:kbuild 9/9] include/linux/byteorder/big_endian.h:8:2: error: #warning inconsistent configuration, needs CONFIG_CPU_BIG

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Date:   Sun, 6 Mar 2022 01:19:58 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     kbuild-all@...ts.01.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Boris Kolpackov <boris@...esynthesis.com>
Subject: Re: [masahiroy:kbuild 9/9] include/linux/byteorder/big_endian.h:8:2:
 error: #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN

On Thu, Mar 3, 2022 at 9:33 PM kernel test robot <lkp@...el.com> wrote:
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git kbuild
> head:   55de8686df7ed2b5237867b130e30c728bbd9db4
> commit: 55de8686df7ed2b5237867b130e30c728bbd9db4 [9/9] kconfig: change .config format to use =n instead of "is not set"
> config: arc-randconfig-r005-20220302 (https://download.01.org/0day-ci/archive/20220303/202203032027.8qFpOWlq-lkp@intel.com/config)
> compiler: arceb-elf-gcc (GCC) 11.2.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git/commit/?id=55de8686df7ed2b5237867b130e30c728bbd9db4
>         git remote add masahiroy https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git
>         git fetch --no-tags masahiroy kbuild
>         git checkout 55de8686df7ed2b5237867b130e30c728bbd9db4
>         # save the config file to linux build tree
>         mkdir build_dir
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash lib/
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
>
> All errors (new ones prefixed by >>):
>
>    In file included from arch/arc/include/uapi/asm/byteorder.h:14,
>                     from include/asm-generic/bitops/le.h:6,
>                     from arch/arc/include/asm/bitops.h:192,
>                     from include/linux/bitops.h:33,
>                     from include/linux/log2.h:12,
>                     from include/asm-generic/div64.h:55,
>                     from ./arch/arc/include/generated/asm/div64.h:1,
>                     from include/linux/math.h:5,
>                     from include/linux/math64.h:6,
>                     from include/linux/time.h:6,
>                     from include/linux/stat.h:19,
>                     from include/linux/module.h:13,
>                     from lib/test_bitops.c:9:
> >> include/linux/byteorder/big_endian.h:8:2: error: #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN [-Werror=cpp]
>        8 | #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
>          |  ^~~~~~~
>    cc1: all warnings being treated as errors
>
>
> vim +8 include/linux/byteorder/big_endian.h
>
> ^1da177e4c3f41 Linus Torvalds 2005-04-16   6
> e9ef073a0796e4 Babu Moger     2017-09-08   7  #ifndef CONFIG_CPU_BIG_ENDIAN
> e9ef073a0796e4 Babu Moger     2017-09-08  @8  #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN
> e9ef073a0796e4 Babu Moger     2017-09-08   9  #endif
> e9ef073a0796e4 Babu Moger     2017-09-08  10
>
> :::::: The code at line 8 was first introduced by commit
> :::::: e9ef073a0796e46c24f037237291efe56fc28ad9 include: warn for inconsistent endian config definition
>
> :::::: TO: Babu Moger <babu.moger@...cle.com>
> :::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org


I cannot reproduce this.

Maybe, this was a bug in make.cross
(but already fixed??)



-- 
Best Regards
Masahiro Yamada