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Date:   Thu, 1 Dec 2022 09:16:10 +0100
From:   Miquel Raynal <miquel.raynal@bootlin.com>
To:     kernel test robot <lkp@intel.com>
Cc:     Mikhail Zhilkin <csharper2005@gmail.com>, llvm@lists.linux.dev,
        oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
        NOGUCHI Hiroshi <drvlabo@gmail.com>
Subject: Re: ld.lld: error: undefined symbol: __udivdi3
Message-ID: <20221201091610.524f7786@xps-13>
In-Reply-To: <202212010140.pIueEBNb-lkp@intel.com>
References: <202212010140.pIueEBNb-lkp@intel.com>
Organization: Bootlin
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Hi Mikhail, Hiroshi,

lkp@intel.com wrote on Thu, 1 Dec 2022 01:46:36 +0800:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.gi=
t master
> head:   01f856ae6d0ca5ad0505b79bf2d22d7ca439b2a1
> commit: 9b78ef0c7997052e9eaa0f7a4513d546fa17358c mtd: parsers: add suppor=
t for Sercomm partitions
> date:   6 months ago
> config: mips-randconfig-r033-20221128
> compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 6e4c=
ea55f0d1104408b26ac574566a0e4de48036)
> reproduce (this is a W=3D1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbi=
n/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # install mips cross compiling tool for clang build
>         # apt-get install binutils-mipsel-linux-gnu
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.=
git/commit/?id=3D9b78ef0c7997052e9eaa0f7a4513d546fa17358c
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/=
git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 9b78ef0c7997052e9eaa0f7a4513d546fa17358c
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dclang make.cross W=
=3D1 O=3Dbuild_dir ARCH=3Dmips SHELL=3D/bin/bash
>=20
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
>=20
> All errors (new ones prefixed by >>):
>=20
> >> ld.lld: error: undefined symbol: __udivdi3 =20
>    >>> referenced by scpart.c
>    >>>               mtd/parsers/scpart.o:(scpart_parse) in archive drive=
rs/built-in.a =20
>=20

Can you please try to reproduce this with a mips toolchain as advised
and send a fix?

Thanks,
Miqu=C3=A8l