[chao-linux:dev 6/6] ld.lld: error: undefined symbol: LZ4_compress_HC

[chao-linux:dev 6/6] ld.lld: error: undefined symbol: LZ4_compress_HC

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git dev
head:   d379148c04b729eda4ce567f9115b2af5962a9bd
commit: d379148c04b729eda4ce567f9115b2af5962a9bd [6/6] f2fs: compress: support lz4hc compression
config: riscv-randconfig-r004-20201130 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project dfcf1acf13226be0f599a7ab6b395b66dc9545d6)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?id=d379148c04b729eda4ce567f9115b2af5962a9bd
        git remote add chao-linux https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git
        git fetch --no-tags chao-linux dev
        git checkout d379148c04b729eda4ce567f9115b2af5962a9bd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x8): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x19AC): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x19C6): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1A60): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1CA6): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1DE0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1E56): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1EA2): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1EDC): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1F66): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1F94): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x1FB2): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.text+0x2036): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.init.text+0xD8): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
   ld.lld: error: debug_core.c:(.init.text+0x176): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>> ld.lld: error: undefined symbol: LZ4_compress_HC
   >>> referenced by compress.c
   >>>               f2fs/compress.o:(lz4_compress_pages) in archive fs/built-in.a

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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Re: [chao-linux:dev 6/6] ld.lld: error: undefined symbol: LZ4_compress_HC

[Chao Yu]

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On 2020/12/1 9:03, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git dev
> head:   d379148c04b729eda4ce567f9115b2af5962a9bd
> commit: d379148c04b729eda4ce567f9115b2af5962a9bd [6/6] f2fs: compress: support lz4hc compression
> config: riscv-randconfig-r004-20201130 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project dfcf1acf13226be0f599a7ab6b395b66dc9545d6)
> 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
>          # install riscv cross compiling tool for clang build
>          # apt-get install binutils-riscv64-linux-gnu
>          # https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?id=d379148c04b729eda4ce567f9115b2af5962a9bd
>          git remote add chao-linux https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git
>          git fetch --no-tags chao-linux dev
>          git checkout d379148c04b729eda4ce567f9115b2af5962a9bd
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All errors (new ones prefixed by >>):
> 
>     ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x8): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x19AC): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x19C6): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1A60): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1CA6): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1DE0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1E56): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1EA2): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1EDC): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1F66): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1F94): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x1FB2): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.text+0x2036): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.init.text+0xD8): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>     ld.lld: error: debug_core.c:(.init.text+0x176): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax
>>> ld.lld: error: undefined symbol: LZ4_compress_HC

Sorry, I missed to check CONFIG_LZ4HC_COMPRESS config, will fix.

Thanks for the report anyway.

Thanks,

>     >>> referenced by compress.c
>     >>>               f2fs/compress.o:(lz4_compress_pages) in archive fs/built-in.a
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
>