2018-05-17 16:51 GMT+09:00 Nicholas Piggin <npiggin@xxxxxxxxx>: > On Thu, 17 May 2018 15:16:39 +0900 > Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> wrote: > >> [Introduction] >> >> The motivation of this work is to move the compiler option tests to >> Kconfig from Makefile. A number of kernel features require the >> compiler support. Enabling such features blindly in Kconfig ends up >> with a lot of nasty build-time testing in Makefiles. If a chosen >> feature turns out unsupported by the compiler, what the build system >> can do is either to disable it (silently!) or to forcibly break the >> build, despite Kconfig has let the user to enable it. By moving the >> compiler capability tests to Kconfig, Kconfig entries will be visible >> only when they are available. >> >> [Major Changes in V4] > > Do you have a git tree for v4? I can test it with the powerpc patches. > > The new scripting capability in kconfig has allowed us to already > improve the config process on powerpc: > > https://marc.info/?l=linuxppc-embedded&m=152648110727868&w=2 > > I'm sure there's more clever things we can do with it but I haven't > had time to think about it yet. One thing that comes to mind is that > It might be nice to show the option as disabled, then the user could > upgrade their compiler to get the options they want. > > Anyway v3 worked fine for me, the documentation is really nice, I > could implement the above patch without any problem despite being a > kbuild dummy. Thanks for the series, ack from me. For easier review and test, I pushed v4 to the following branch: git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git kconfig-shell-v4 -- Best Regards Masahiro Yamada -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
