fatal error: 'CL/sycl.hpp' file not found

[QM]

Hi Folks,

Hope you have a wonderful day at work.

I am trying to build DPC++ on my computer which is using Ubuntu. I followed exactly what mentioned in the guild:  https://intel.github.io/llvm-docs/GetStartedGuide.html

My DPC++ toolchain is built using configure.py without any further options added (no CUDA, no HIP, no ESIMD CPU Emulation ), I also installed OpenCL RT for CPU and set working environment/libs as followed.

export DPCPP_HOME=~/sycl_workspace
export PATH=$DPCPP_HOME/llvm/build/bin:$PATH
export LD_LIBRARY_PATH=$DPCPP_HOME/llvm/build/lib:$LD_LIBRARY_PATH

DPC++ toolchain is tested and passed by $DPCPP_HOME/llvm/buildbot/check.py

However when I run a simple DPC++ application provided by the guild, the <CL/sycl.hpp> can not be found. Did I miss some step in the build process? Or do I need to install OpenCL separately? Thank you for your help.

Regards,

Quan

[VidyalathaB_Intel]

Hi,

Thanks for reaching out to us.

>>without any further options added (no CUDA, no HIP, no ESIMD CPU Emulation )

Could you please let us know the GPU with which you are working?

If you are working on Intel GPU you can use Intel oneAPI DPC++ compiler by downloading oneAPI BaseToolkit (Link to download: https://www.intel.com/content/www/us/en/developer/tools/oneapi/base-toolkit-download.html) instead of using OpenSource DPC++ compiler.

If you still wish to continue with the opensource oneAPI DPC++ compiler, we suggest you raise this issue in Github for better assistance as we do not provide support for opensource oneAPI in this forum.

Please refer to the below GitHub link to raise this issue:

https://github.com/intel/llvm/issues

Regards,

Vidya.

[QM]

Hi Vidya,

Thank you for your reply.

I am using Intel GPU and decided to install the oneAPI BaseToolkit on Windows because oneAPI is only supporting CPU flow in WSL2 (ubuntu in my case) I think. I have tried to build a sample project using Visual Studio but encountering the same issue "CL/sycl.hpp not found". So I believe I need to install Intel OpenCL driver and including the CL library in build step, is that correct? Please let me know your idea.

Best,

Quan

[QM · Accepted solution]

Hi Vidya,

I have resolved my issue after installing OpenCL sdk and include its header files. Thanks for your time and we can close the topic. Again, thank you.

Best regards,

Quan

[VidyalathaB_Intel]

Hi Quan,

>>I have resolved my issue

Glad to know that your issue is resolved and thanks for letting us know.

>>Thanks for your time and we can close the topic

Thanks for the confirmation. As the issue is resolved we are closing this thread. Please post a new question if you need any additional information from Intel as this thread will no longer be monitored.

Have a Great Day!

Regards,

Vidya.