Re: powerpc/ppc64: Allow allmodconfig to build (finally !)

[Guenter Roeck <linux@roeck-us.net>]

On 05/15/2014 05:22 AM, Benjamin Herrenschmidt wrote:
> On Thu, 2014-05-15 at 03:46 -0700, Guenter Roeck wrote:
>> On 05/15/2014 02:47 AM, Alan Modra wrote:
>>> On Wed, May 14, 2014 at 08:34:30AM -0700, Guenter Roeck wrote:
>>>> Bummer. Confirmed, if I replace "@h" with "@high" in just one place,
>>>> the builds pass with binutils 2.24. Unfortunately the same builds then
>>>> fails with binutils 2.23.
>>>>
>>>> Any idea how to get it to compile with both old and new versions ?
>>>
>>> The standard way with GNU software would be to write a configure test,
>>> that checks for @high support in the assembler, and defines a macro
>>> if the assembler passes the check.  I'm not that familiar with the
>>> linux kernel these days, but a little grepping around says that
>>> something like
>>>
>>> ashigh := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
>>> KBUILD_AFLAGS += $(ashigh)
>>>
>>> might work.
>>>
>>
>> Yes, it does.
>
> Care to send a patch ? :-)
>

Yes, working on it.

Thanks,
Guenter