linux-kernel - Re: nds32 build failures

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Date:   Mon, 16 Apr 2018 06:59:38 -0700
From:   Guenter Roeck <private@...ck-us.net>
To:     Greentime Hu <green.hu@...il.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Vincent Chen <vincentc@...estech.com>,
        Greentime Hu <greentime@...estech.com>,
        Arnd Bergmann <arnd@...db.de>, kito.cheng@...il.com,
        wuiw@...estech.com
Subject: Re: nds32 build failures

On 04/16/2018 06:22 AM, Guenter Roeck wrote:
> On 04/16/2018 02:06 AM, Greentime Hu wrote:
>> 2018-04-16 11:58 GMT+08:00 Guenter Roeck <private@...ck-us.net>:
>>> I thought I should give the brand new architecture a try. Unfortunately,
>>> that was not very successful.
>>>
>>> Build reference: v4.17-rc1
>>> gcc version: nds32le-elf-gcc (GCC) 7.3.0
>>>
>>> Building nds32:defconfig ... failed
>>>
>>> arch/nds32/include/asm/nds32.h: In function 'GIE_ENABLE':
>>> arch/nds32/include/asm/nds32.h:25:2: error: implicit declaration of function
>>> '__nds32__gie_en'; did you mean '__nds32__'?
>>>
>>> arch/nds32/include/asm/nds32.h: In function 'CACHE_SET':
>>> arch/nds32/include/asm/nds32.h:38:18: error: implicit declaration of
>>> function '__nds32__mfsr'; did you mean '__nds32__'?
>>>
>>> arch/nds32/include/asm/nds32.h:38:32: error: 'NDS32_SR_ICM_CFG' undeclared
>>>
>>> arch/nds32/include/asm/nds32.h:41:32: error: 'NDS32_SR_DCM_CFG'
>>>
>>> Am I missing something ?
>>>
>> Hi, Guenter:
>>
>> This built failure is because the toolchain version you used is not
>> supported the latest intrinsic function/macro.
>> We are sending the latest patchset now and we expect the whole new
>> features will be supported in gcc8.0.0 and binutil2.31+.
>>
>> If you'd like to get these new features of toolchain, you may use the
>> github version.
>> This is the built-script repo. https://github.com/andestech/build_script.git
>>
> Hmm. How comes that the defines are not there ? Also, is nds32_intrinsic.h supposed to be auto-generated ?
>
Answering my own question. This file is part of gcc. Presumably, the missing defines
are declared in that file ?
Interesting, I always thought that the Linux kernel is supposed not to include compiler
include files, to avoid issues such as license poisoning. One lives and learns.

Guenter

> The toolchain as provided isn't usable for me since it is not position independent.
>
> Arnd, it might make sense to drop the nds32 toolchain from kernel.org; its presence is at best misleading.
>
> Guenter
>
>