linux-kernel - Re: decompress.c:undefined reference to `_

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Message-ID: <daa93504-5d42-a5f1-ae7a-3b802fd661f7@infradead.org>
Date:   Sun, 29 Aug 2021 19:30:21 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     kernel test robot <lkp@...el.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: Re: decompress.c:undefined reference to `__decompress'

On 5/21/21 1:20 AM, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   79a106fc6585979022012e65a1e45e3d2d28b77b
> commit: 665d8d58761cba41147fe7e98e2ceed1cbf603a2 powerpc/akebono: Fix unmet dependency errors
> date:   3 months ago
> config: powerpc64-randconfig-r023-20210521 (attached as .config)
> compiler: powerpc-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=665d8d58761cba41147fe7e98e2ceed1cbf603a2
>          git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>          git fetch --no-tags linus master
>          git checkout 665d8d58761cba41147fe7e98e2ceed1cbf603a2
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc64
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
>     powerpc-linux-ld: arch/powerpc/boot/wrapper.a(decompress.o): in function `partial_decompress':
>>> decompress.c:(.text+0x1f0): undefined reference to `__decompress'
> 
> ---

Hi Christophe,

Didn't you have a patch that adds boot support in Powerpc for
LZMA and LZO?  What happened to that patch?


thanks.
-- 
~Randy