[Openmp-dev] Error during build of CUDA offloading plugin / device RTL

[Lukas Sommer via Openmp-dev]

Hi Jonas,

thank you very much for your quick reply!

I was indeed able to build the release_70-version of LLVM/Clang/OpenMP
with a different version of OS/GCC (nvcc 9.2.148, gcc 7.3.0, Ubuntu 18.04).

Thanks for your help,

Lukas


On 08/09/2018 12:55 PM, Jonas Hahnfeld wrote:
> Hi Lukas,
>
> can you try installing and using (via
> -DLIBOMPTARGET_NVPTX_ALTERNATE_HOST_COMPILER) an older version of GCC?
> According to
> https://docs.nvidia.com/cuda/cuda-installation-guide-linux/index.html#system-requirements,
> CUDA 9 only supports Fedora 27 with GCC 7, so I think your C++ header
> files use features that nvcc is not prepared to cope with.
>
> Cheers,
> Jonas
>
> On 2018-08-09 12:36, Lukas Sommer via Openmp-dev wrote:
>> Hi everyone,
>>
>> I just checked out branch release_70 of LLVM, Clang and OpenMP from git
>> and tried to build using cmake and make.
>>
>> Unfortunately I experience an error during the build of the Nvidia CUDA
>> offloading device RTL:
>>
>>> [ 10%] Building NVCC (Device) object
>>> projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir/src/omptarget-nvptx_generated_cancel.cu.o
>>>
>>> /usr/include/c++/8/type_traits(1049): error: type name is not allowed
>>>
>>> /usr/include/c++/8/type_traits(1049): error: type name is not allowed
>>>
>>> /usr/include/c++/8/type_traits(1049): error: identifier
>>> "__is_assignable" is undefined
>>>
>>> 3 errors detected in the compilation of
>>> "/tmp/tmpxft_00005a09_00000000-6_cancel.cpp1.ii".
>>> CMake Error at omptarget-nvptx_generated_cancel.cu.o.Debug.cmake:275
>>> (message):
>>>   Error generating file
>>>  
>>> /scratch/llvm/llvm-latest/llvm-bin/projects/openmp/libomptarget/deviceRTLs/nvptx/CMakeFiles/omptarget-nvptx.dir/src/./omptarget-nvptx_generated_cancel.cu.o
>>>
>> I also see a similar error during the compilation of
>> omptarget-nvptx_generated_omp_data.cu.o.
>>
>> I'm running Fedora 28 with kernel version 4.17.7, gcc version 8.1.1 and
>> nvcc version 9.1.85. 
>>
>> My cmake-configuration is the default configuration, apart from
>> CMAKE_BUILD_TYPE=Debug, BUILD_SHARED_LIBS=ON and
>> LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES=35,61 (6.1 is the capability of
>> my device).
>>
>> Does anyone have some suggestions on how to fix this problem? Do I need
>> to further change my cmake configuration?
>>
>> Thanks in advance,
>>
>> Regards
>>
>> Lukas
>>
>>
>>
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