Hi. 2018-06-18 22:25 GMT+09:00 Eric W. Biederman <ebiederm@xxxxxxxxxxxx>: > Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> writes: > >> - drop CONFIG_CROSS_COMPILE support > > aka >> commit f1089c92da791034af73478159626007cba7f092 >> Author: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> >> Date: Mon May 28 18:21:39 2018 +0900 >> >> kbuild: remove CONFIG_CROSS_COMPILE support >> >> Kbuild provides a couple of ways to specify CROSS_COMPILE: >> >> [1] Command line >> [2] Environment >> [3] arch/*/Makefile (only some architectures) >> [4] CONFIG_CROSS_COMPILE >> >> [4] is problematic for the compiler capability tests in Kconfig. >> CONFIG_CROSS_COMPILE allows users to change the compiler prefix from >> 'make menuconfig', etc. It means, the compiler options would have >> to be all re-calculated everytime CONFIG_CROSS_COMPILE is changed. >> >> To avoid complexity and performance issues, I'd like to evaluate >> the shell commands statically, i.e. only parsing Kconfig files. >> >> I guess the majority is [1] or [2]. Currently, there are only >> 5 defconfig files that specify CONFIG_CROSS_COMPILE. >> arch/arm/configs/lpc18xx_defconfig >> arch/hexagon/configs/comet_defconfig >> arch/nds32/configs/defconfig >> arch/openrisc/configs/or1ksim_defconfig >> arch/openrisc/configs/simple_smp_defconfig >> >> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> >> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> >> > > I just started working against 4.18-rc1 and discovered this. > > This has broken my setup for building and testing changes on other > architectures. I have to put the name of the compiler prefix somewhere. > The mapping between the prefix to gcc and the linux architecture is > non-trivial. Especially with a lot of architectures in the test pool. > > I am tired and frustrated this morning as this is going to keep me from > getting done what I had planned today. > > This is a regression pure and simple. It breaks my workflow. Please > fix it. > > Eric > Sorry, I cannot fix. As I mentioned in the commit log, CONFIG_CROSS_COMPILE cannot co-exist with the new Kconfig feature. Only the possible fix is to revert almost all Kbuild/Kconfig commits merged in the previous MW, but I do not want to. -- 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
