On (23/08/20 14:11), Masahiro Yamada wrote: > > That doesn't seem cover the cases that I'm concerned with. I don't see > > anything related to "!sym" in the patch. > > > > What will KCONFIG_VERBOSE do if it reads the following config file? > > > > // assuming that both config options were valid and existed in the old > > // kernel, but were removed/renamed in the new kernel > > > > $ cat .config > > CONFIG_DISABLE_BUGS=y > > # CONFIG_ENABLE_WINAPI is not set > > > > > > I'd like to see warnings for both lines, even for config that is not > > set, because it maybe we set by a build script depending on USE flags > > for instance, so that build target may still refer to non-existent > > config. > > > I did not say Ying Sun's patch covered your case. > > I just meant I dislike your approach. Sure, OK. > After his patch is applied, please come back with a similar approach I guess Ying Sun's patch cannot be extended to cover these extra cases? What the preferred approach would be? Do we want a new KCONFIG_FOO env variable that changes behaviour of one of the targets? E.g. KCONFIG_LIST_MISSING=1 make oldconfig and then have conf list symbols and terminate with exit(1) if there are some unrecognized symbols? We have "listnew", so "listmissing" sort of fits as a new target. > if you want to address your case in the mainline kernel Yes please, we want an upstream solution for the problem in question.