2017-04-14 15:17 GMT+09:00 Masahiro Yamada <yamada.masah...@socionext.com>:
> Arnd Bergmann reported:
> "When ftrace is enabled and we build with gcc-4.7 or older, we
> get a warning for each file on architectures that select
> CONFIG_LD_DEAD_CODE_DATA_ELIMINATION:
>
> warning: -ffunction-sections disabled; it makes profiling impossible
> [enabled by default]
> "
>
> Since commit c3f0d0bc5b01 ("kbuild, LLVMLinux: Add -Werror to
> cc-option to support clang"), warnings are treated as errors in
> cc-option checks. CC_FLAGS_FTRACE is blindly added to KBUILD_CFLAGS,
> so $(call cc-option,-ffunction-sections,) should be moved below it
> in order to detect the conflict between the two options.
>
> Reported-by: Arnd Bergmann <a...@arndb.de>
> Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
Applied to linux-kbuild/kbuild.
--
Best Regards
Masahiro Yamada
