linux-kernel - Re: [kbuild-all] Re: llvm-objcopy: error: invalid output format: 'elf64-s390'

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Message-ID: <fd819888-844f-1a76-fee2-02e89faee090@intel.com>
Date:   Mon, 30 May 2022 16:52:20 +0800
From:   "Chen, Rong A" <rong.a.chen@...el.com>
To:     Nathan Chancellor <nathan@...nel.org>,
        kernel test robot <lkp@...el.com>
Cc:     Heiko Carstens <hca@...ux.ibm.com>, llvm@...ts.linux.dev,
        kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: [kbuild-all] Re: llvm-objcopy: error: invalid output format:
 'elf64-s390'



On 5/29/2022 12:21 AM, Nathan Chancellor wrote:
> On Sun, May 29, 2022 at 12:04:48AM +0800, kernel test robot wrote:
>> Hi Heiko,
>>
>> FYI, the error/warning still remains.
>>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head:   9d004b2f4fea97cde123e7f1939b80e77bf2e695
>> commit: adda746629b4a3950f313bc645fa0e54daee871c s390/purgatory: workaround llvm's IAS limitations
>> date:   11 days ago
>> config: s390-randconfig-c005-20220527 (https://download.01.org/0day-ci/archive/20220529/202205290045.gOvUOkt3-lkp@intel.com/config)
>> compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0fbe3f3f486e01448121f7931a4ca29fac1504ab)
>> 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
>>          # install s390 cross compiling tool for clang build
>>          # apt-get install binutils-s390x-linux-gnu
>>          # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=adda746629b4a3950f313bc645fa0e54daee871c
>>          git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>          git fetch --no-tags linus master
>>          git checkout adda746629b4a3950f313bc645fa0e54daee871c
>>          # save the config file
>>          mkdir build_dir && cp config build_dir/.config
>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
>>
>> If you fix the issue, kindly add following tag where applicable
>> Reported-by: kernel test robot <lkp@...el.com>
>>
>> All errors (new ones prefixed by >>):
>>
>>>> llvm-objcopy: error: invalid output format: 'elf64-s390'
> 
> This is expected, as llvm-objcopy needs support for s390:
> https://github.com/ClangBuiltLinux/linux/issues/1530
> 
> Please use GNU objcopy for the time being by explicitly providing
> OBJCOPY=${CROSS_COMPILE}objcopy to make.

Hi Nathan,

Thanks for your reminding, will update it.

Best Regards,
Rong Chen

> 
> Cheers,
> Nathan
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