[kbuild-all] Re: gcc: error: unrecognized command-line option '-mno-space-regs'

On 2/14/2022 6:26 AM, Helge Deller wrote: > On 2/13/22 11:39, kernel test robot wrote: >> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >> head:   b81b1829e7e39f6cebdf6e4d5484eacbceda8554 >> commit: 5f6e0fe01b6b33894cf6f61b359ab5a6d2b7674e parisc: Fix compile failure when building 64-bit kernel natively >> date:   6 months ago >> config: parisc64-randconfig-r035-20220213 (https://download.01.org/0day-ci/archive/20220213/202202131837.mZeWy9J4-lk...) >> compiler: hppa-linux-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/torvalds/linux.git/commit... >>          git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >>          git fetch --no-tags linus master >>          git checkout 5f6e0fe01b6b33894cf6f61b359ab5a6d2b7674e >>          # 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=parisc64 prepare >> >> 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 >>): >> >>     scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr] >>     scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr] >>>> gcc: error: unrecognized command-line option '-mno-space-regs' >>>> gcc: error: unrecognized command-line option '-mno-space-regs' >>>> gcc: error: unrecognized command-line option '-mfast-indirect-calls'; did you mean '-mforce-indirect-call'? >>>> gcc: error: unrecognized command-line option '-mfast-indirect-calls'; did you mean '-mforce-indirect-call'? >>>> gcc: error: unrecognized command-line option '-mdisable-fpregs' >>>> gcc: error: unrecognized command-line option '-mschedule=7200' > > Same issue as the other error. > Here a 64bit compiler was used to build a 32-bit kernel... Hi Helge, Thanks for the explanation, it seems kernel still can be 32-bit if using make ARCH=parisc64 randconfig, we'll check CONFIG_64BIT config directly to decide the ARCH value.

Best Regards, Rong Chen > > I've queued up a patch in for-next which should give a better error message if > someone uses such a wrong combination: > https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/c... > > Helge > >>     make[2]: *** [scripts/Makefile.build:117: scripts/mod/devicetable-offsets.s] Error 1 > >>>> gcc: error: unrecognized command-line option '-mdisable-fpregs' >>>> gcc: error: unrecognized command-line option '-mschedule=7200' >>     make[2]: *** [scripts/Makefile.build:271: scripts/mod/empty.o] Error 1 >>     make[2]: Target '__build' not remade because of errors. >>     make[1]: *** [Makefile:1216: prepare0] Error 2 >>     make[1]: Target 'prepare' not remade because of errors. >>     make: *** [Makefile:220: __sub-make] Error 2 >>     make: Target 'prepare' not remade because of errors. >> >> --- >> 0-DAY CI Kernel Test Service, Intel Corporation >> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org >> > _______________________________________________ > kbuild-all mailing list -- kbuild-all(a)lists.01.org > To unsubscribe send an email to kbuild-all-leave(a)lists.01.org >