On Tue, Jun 5, 2018 at 11:28 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Tue, Jun 5, 2018 at 7:05 PM, Nick Desaulniers
> <ndesaulniers@xxxxxxxxxx> wrote:
>>
>> The semantics of extern inline has changed since gnu89. This means that
>> folks using GCC versions >= 5.1 may see symbol redefinition errors at
>> link time for subdirs that override KBUILD_CFLAGS (making the C standard
>> used implicit) regardless of this patch. This has been cleaned up
>> earlier in the patch set, but is left as a note in the commit message
>> for future travelers.
>
> I think the keyword you are missing is
>
> __attribute__((gnu_inline))
>
> which forces the gnu89 behavior on all compiler versions. It's been supported
> since gcc-4.2, so it should not cause problems on any compiler that is able
> to build an x86 kernel.
Nevermind, I just saw you already posted that.
Arnd
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