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

[Chen, Rong A]

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@xxxxxxxxx/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=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
> >
> > If you fix the issue, kindly add following tag where applicable
> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> >
> > All errors (new ones prefixed by >>):
> >
> > > > llvm-objcopy: error: invalid output format: 'elf64-s390'
>
> This is expected, as llvm-objcopy needs support for s390:
> https://github.com/ClangBuiltLinux/linux/issues/1530
>
> Please use GNU objcopy for the time being by explicitly providing
> OBJCOPY=${CROSS_COMPILE}objcopy to make.

Hi Nathan,

Thanks for your reminding, will update it.

Best Regards,
Rong Chen

> Cheers,
> Nathan
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