tree: https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git cc-check head: 0ca912ef36d6aa510e6376231b57b391fe8c6dd8 commit: 0ca912ef36d6aa510e6376231b57b391fe8c6dd8 [1/1] kbuild: check the minimum compiler version in Kconfig config: x86_64-rhel (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.gi... git remote add kbuild https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git git fetch --no-tags kbuild cc-check git checkout 0ca912ef36d6aa510e6376231b57b391fe8c6dd8 # save the attached .config to linux build tree make W=1 ARCH=x86_64 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/Kconfig.include:44: Sorry, this compiler is unsupported. -- scripts/Kconfig.include:44: Sorry, this compiler is unsupported. make[3]: *** [scripts/kconfig/Makefile:71: syncconfig] Error 1 make[2]: *** [Makefile:602: syncconfig] Error 2 make[1]: *** [Makefile:710: include/config/auto.conf.cmd] Error 2 make[1]: Failed to remake makefile 'include/config/auto.conf.cmd'. make[1]: Failed to remake makefile 'include/config/auto.conf'. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'modules_prepare' not remade because of errors. -- scripts/Kconfig.include:44: Sorry, this compiler is unsupported. make[2]: *** [scripts/kconfig/Makefile:71: olddefconfig] Error 1 make[1]: *** [Makefile:602: olddefconfig] Error 2 make: *** [Makefile:185: __sub-make] Error 2 make: Target 'olddefconfig' not remade because of errors. -- scripts/Kconfig.include:44: Sorry, this compiler is unsupported. make[3]: *** [scripts/kconfig/Makefile:71: syncconfig] Error 1 make[2]: *** [Makefile:602: syncconfig] Error 2 make[1]: *** [Makefile:710: include/config/auto.conf.cmd] Error 2 make[1]: Failed to remake makefile 'include/config/auto.conf.cmd'. make[1]: Failed to remake makefile 'include/config/auto.conf'. make[1]: *** [arch/x86/Makefile:278: checkbin] Error 1 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __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