On Wed, Oct 17, 2018 at 06:25:23PM +0900, Masahiro Yamada wrote: > masahiro@pug:~/ref/linux$ git log --oneline | head -n 4 > 6cd6271 kbuild: check the presence of lzo and lz4 tools when necessary > b72cfb7 objtool: move libelf check out of top Makefile > e3061d8 kbuild: provide a new place to check necessary host tools > b955a91 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc > masahiro@pug:~/ref/linux$ git clean -dqfx > masahiro@pug:~/ref/linux$ cp ~/Downloads/config.lz4 .config > masahiro@pug:~/ref/linux$ sudo mv /usr/bin/lz4c /usr/bin/lz4c.backup > [sudo] password for masahiro: > masahiro@pug:~/ref/linux$ make > HOSTCC scripts/basic/fixdep > HOSTCC scripts/kconfig/conf.o > YACC scripts/kconfig/zconf.tab.c > LEX scripts/kconfig/zconf.lex.c > HOSTCC scripts/kconfig/zconf.tab.o > HOSTLD scripts/kconfig/conf > scripts/kconfig/conf --syncconfig Kconfig > * > * Restart config... > * > * > * GCC plugins > * > GCC plugins (GCC_PLUGINS) [N/y/?] (NEW) > * > * lz4 tool not found. Please install it. > * > make[1]: *** [scripts/Makefile.toolcheck;46: check_lz4] Error 1 > Makefile:595: include/config/auto.conf: No such file or directory > make: *** [Makefile;636: include/config/auto.conf] Error 2 > make: *** Deleting file 'include/config/auto.conf' Ok, gotcha. The difference is the "make oldconfig" I do. [boris@zn: ~/kernel/linux> git log --oneline | head -n 3 57ac85467970 kbuild: check the presence of lzo and lz4 tools when necessary 92a3b44ab988 objtool: move libelf check out of top Makefile 23b142c064a7 kbuild: provide a new place to check necessary host tools [boris@zn: ~/kernel/linux> git clean -dqfx [boris@zn: ~/kernel/linux> cp ~/tmp/config.lz4 .config [boris@zn: ~/kernel/linux> make oldconfig HOSTCC scripts/basic/fixdep HOSTCC scripts/kconfig/conf.o YACC scripts/kconfig/zconf.tab.c LEX scripts/kconfig/zconf.lex.c HOSTCC scripts/kconfig/zconf.tab.o HOSTLD scripts/kconfig/conf scripts/kconfig/conf --oldconfig Kconfig # # configuration written to .config # [boris@zn: ~/kernel/linux> make SYSTBL arch/x86/include/generated/asm/syscalls_32.h SYSHDR arch/x86/include/generated/asm/unistd_32_ia32.h SYSHDR arch/x86/include/generated/asm/unistd_64_x32.h SYSTBL arch/x86/include/generated/asm/syscalls_64.h HYPERCALLS arch/x86/include/generated/asm/xen-hypercalls.h SYSHDR arch/x86/include/generated/uapi/asm/unistd_32.h SYSHDR arch/x86/include/generated/uapi/asm/unistd_64.h SYSHDR arch/x86/include/generated/uapi/asm/unistd_x32.h HOSTCC arch/x86/tools/relocs_32.o HOSTCC arch/x86/tools/relocs_64.o HOSTCC arch/x86/tools/relocs_common.o HOSTLD arch/x86/tools/relocs ... -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)