Re: [PATCH] ARM: Kconfig: default to AEABI w/ Clang

[Arnd Bergmann]

On Tue, Jun 25, 2019 at 11:04 PM 'Nick Desaulniers' via Clang Built
Linux <clang-built-linux@xxxxxxxxxxxxxxxx> wrote:
>
> Clang produces references to __aeabi_uidivmod and __aeabi_idivmod for
> arm-linux-gnueabi and arm-linux-gnueabihf targets incorrectly when AEABI
> is not selected (such as when OABI_COMPAT is selected).
>
> While this means that OABI userspaces wont be able to upgraded to
> kernels built with Clang, it means that boards that don't enable AEABI
> like s3c2410_defconfig will stop failing to link in KernelCI when built
> with Clang.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/482
> Link: https://groups.google.com/forum/#!msg/clang-built-linux/yydsAAux5hk/GxjqJSW-AQAJ
> Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>

Looks good to me,

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>

Please add it to Russell's patch tracker if you haven't already.

Most of the .config files that don't set AEABI (and a lot of the others
as well) have likely never been booted on real hardware with a modern
kernel in a long time. There have not been any distros using OABI in
a long time (Debian Lenny was released in 2009), and gcc dropped
support for it a few years later.

We could probably change most of these to use OABI_COMPAT
instead, aside from any ones that Russell wants to keep building as
OABI for his own machines.

       Arnd