clang-15: error: linker command failed with exit code 1 (use -v to see invocation)

[kernel test robot <lkp@intel.com>]

BCC: lkp@intel.com
CC: linux-kernel@vger.kernel.org
TO: Christophe Leroy <christophe.leroy@csgroup.eu>
CC: Michael Ellerman <mpe@ellerman.id.au>

Hi Christophe,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1930a6e739c4b4a654a69164dbe39e554d228915
commit: 12318163737cd8808d13faa6e2393774191a6182 powerpc/32: Remove remaining .stabs annotations
date:   7 weeks ago
config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20220329/202203291816.tZgWF63Z-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d)
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 powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12318163737cd8808d13faa6e2393774191a6182
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 12318163737cd8808d13faa6e2393774191a6182
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr]
   scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr]
   /usr/bin/ld: unrecognised emulation mode: elf32ppclinux
   Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu elf_l1om elf_k1om i386pep i386pe
>> clang-15: error: linker command failed with exit code 1 (use -v to see invocation)
   make[2]: *** [arch/powerpc/kernel/vdso32/Makefile:51: arch/powerpc/kernel/vdso32/vdso32.so.dbg] Error 1
   make[2]: Target 'include/generated/vdso32-offsets.h' not remade because of errors.
   make[1]: *** [arch/powerpc/Makefile:423: vdso_prepare] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:219: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp