On Wed, Jun 10, 2020 at 12:43 PM kernel test robot <lkp(a)intel.com&gt; wrote: > > TO: Nathan Chancellor <natechancellor(a)gmail.com&gt; > CC: 0day robot <lkp(a)intel.com&gt; > > tree: https://github.com/0day-ci/linux/commits/UPDATE-20200603-033008/Nathan-Ch... > head: b19361026b76f9167c9206f654b12f53023550d1 > commit: b19361026b76f9167c9206f654b12f53023550d1 [1/1] s390: vdso: Use $(LD) instead of $(CC) to link vDSO > config: s390-randconfig-r021-20200607 (attached as .config) > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project bc2b70982be8f5250cd0082a7190f8b417bd4dfe) > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # install s390 cross compiling tool for clang build > # apt-get install binutils-s390-linux-gnu > git checkout b19361026b76f9167c9206f654b12f53023550d1 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp(a)intel.com&gt; > > All errors (new ones prefixed by >>, old ones prefixed by <<): > > >> ld.lld: error: unknown emulation: elf64_s390 ^ is this another inconsistency we have with emulation modes, or is this completely unsupported in LLD?

ld.lld: error: unknown argument '-fPIC'

On Wed, Jun 10, 2020 at 4:04 PM 'Fangrui Song' via Clang Built Linux <clang-built-linux(a)googlegroups.com&gt; wrote: > > > On 2020-06-10, 'Nick Desaulniers' via Clang Built Linux wrote: > >On Wed, Jun 10, 2020 at 12:43 PM kernel test robot <lkp(a)intel.com&gt; wrote: > >> > >> TO: Nathan Chancellor <natechancellor(a)gmail.com&gt; > >> CC: 0day robot <lkp(a)intel.com&gt; > >> > >> tree: https://github.com/0day-ci/linux/commits/UPDATE-20200603-033008/Nathan-Ch... > >> head: b19361026b76f9167c9206f654b12f53023550d1 > >> commit: b19361026b76f9167c9206f654b12f53023550d1 [1/1] s390: vdso: Use $(LD) instead of $(CC) to link vDSO > >> config: s390-randconfig-r021-20200607 (attached as .config) > >> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project bc2b70982be8f5250cd0082a7190f8b417bd4dfe) > >> reproduce (this is a W=1 build): > >> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > >> chmod +x ~/bin/make.cross > >> # install s390 cross compiling tool for clang build > >> # apt-get install binutils-s390-linux-gnu > >> git checkout b19361026b76f9167c9206f654b12f53023550d1 > >> # save the attached .config to linux build tree > >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 > >> > >> If you fix the issue, kindly add following tag as appropriate > >> Reported-by: kernel test robot <lkp(a)intel.com&gt; > >> > >> All errors (new ones prefixed by >>, old ones prefixed by <<): > >> > >> >> ld.lld: error: unknown argument '-fPIC' > >> ld.lld: error: unknown emulation: elf64_s390 > > > >^ is this another inconsistency we have with emulation modes, or is > >this completely unsupported in LLD? > > LLD does not support EM_S390. I don't know anyone is working on it (or > is interested at the support). Ah right, Nathan confirmed no LLD support for s390. Philip, we may need to not use LD=ld.lld for s390. Not sure about the second error message.