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Clang/LLVM build needs -m32/-m64 to switch triple variants (i.e. the --target=xxx parameter). Otherwise we get build errors for CONFIG_32BIT. GCC doesn't support -m32/-m64 now, but maybe support in future, so use cc-option to specify them. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202604232041.ESJDwVG4-lkp@intel.com/ Suggested-by: Nathan Chancellor <nathan@kernel.org Tested-by: WANG Rui <wangrui@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>