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173767c218
The object files in purgatory do not export symbols, so disable exports for all the object files, not only sha256.o, with -D__DISABLE_EXPORTS. This fixes a build failure with CONFIG_GENDWARFKSYMS, where we would otherwise attempt to calculate symbol versions for purgatory objects and fail because they're not built with debugging information: error: gendwarfksyms: process_module: dwarf_get_units failed: no debugging information? make[5]: *** [../scripts/Makefile.build:207: arch/s390/purgatory/string.o] Error 1 make[5]: *** Deleting file 'arch/s390/purgatory/string.o' Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202502120752.U3fOKScQ-lkp@intel.com/ Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Link: https://lore.kernel.org/r/20250213211614.3537605-2-samitolvanen@google.com Acked-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>