linux-kernel - Re: nds32 build failures

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Date:   Tue, 17 Apr 2018 14:47:44 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Greentime Hu <green.hu@...il.com>
Cc:     Guenter Roeck <private@...ck-us.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Vincent Chen <vincentc@...estech.com>,
        Greentime Hu <greentime@...estech.com>, kito.cheng@...il.com,
        wuiw@...estech.com
Subject: Re: nds32 build failures

On Mon, Apr 16, 2018 at 11:06 AM, Greentime Hu <green.hu@...il.com> wrote:
> 2018-04-16 11:58 GMT+08:00 Guenter Roeck <private@...ck-us.net>:
>
> 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

I've taken the gcc-6.3 sources from there, and updated them to gcc-6.4.0
in order to build a nds32le-linux toolchain based on the same version as
the other ones.

Unfortunately neither the usual binutils-2.29.1 nor your binutils worked
for me, but I eventually managed to get a build using the binutils-2.30
release.

With this, I could build a mainline kernel with a couple of warnings,
but an 'allmodconfig' build still failed.

Guenter, can you try my binary from
www.kernel.org/pub/tools/crosstool/files/bin/x86_64/6.4.0/x86_64-gcc-6.4.0-nolibc-nds32le-linux.tar.xz
?

If that works for you, I'll update the front-page and remove the nds32-elf
toolchains.

Greentime, do you have a patch set for gcc-7.3 as well, or are 6.3 and 8.0 the
only working compilers for nds32le-linux?

      Arnd