Re: ARCH=hexagon unsupported?

[Randy Dunlap <rdunlap@infradead.org>]

On 4/23/21 2:36 AM, Arnd Bergmann wrote:
> On Fri, Apr 23, 2021 at 12:12 AM 'Nick Desaulniers' via Clang Built
> Linux <clang-built-linux@googlegroups.com> wrote:
>>
>> Arnd,
>> No one can build ARCH=hexagon and
>> https://github.com/ClangBuiltLinux/linux/issues/759 has been open for
>> 2 years.
>>
>> Trying to build
>> $ ARCH=hexagon CROSS_COMPILE=hexagon-linux-gnu make LLVM=1 LLVM_IAS=1 -j71
>>
>> shows numerous issues, the latest of which
>> commit 8320514c91bea ("hexagon: switch to ->regset_get()")
>> has a very obvious typo which misspells the `struct` keyword and has
>> been in the tree for almost 1 year.
> 
> Thank you for looking into it.
> 
>> Why is arch/hexagon/ in the tree if no one can build it?
> 
> Removing it sounds reasonable to me, it's been broken for too long, and
> we did the same thing for unicore32 that was in the same situation
> where the gcc port was too old to build the kernel and the clang
> port never quite work in mainline.
> 
> Guenter also brought up the issue a year ago, and nothing happened.
> I see Brian still occasionally sends an Ack to a patch that gets merged
> through another tree, but he has not send any patches or pull requests
> himself after taking over maintainership from Richard Kuo in 2019,
> and the four hexagon pull requests after 2014 only contained build fixes
> from developers that don't have access to the hardware (Randy Dunlap,
> Viresh Kumar, Mike Frysinger and me).
> 
>        Arnd
> 
> [1] https://lore.kernel.org/lkml/04ca01d633a8$9abb8070$d0328150$@codeaurora.org/

There is no current gcc C compiler in the 3 locations that I know of to look.
The one I tried is v4.6 and it is too old to work with current makefiles.

-- 
~Randy