[cfe-users] how to build latest version of Clang

[Jost, Gabriele (ARC-TNC)[Supersmith] via cfe-users]

Hello Fellow Clang users,
My clang install is still clang 9.0 and I would like to upgrade to the latest release. I am not sure what the latest version is. I saw that there clang 12 still in progress, but on the download page, I only see clang 10. So I followed the instructions here, because I need OpenMP offload support:

https://hpc-wiki.info/hpc/Building_LLVM/Clang_with_OpenMP_Offloading_to_NVIDIA_GPUs

I am getting somewhat disturbing messages during the configure:
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX
-- Performing Test HAVE_POSIX_REGEX -- success
-- Performing Test HAVE_STEADY_CLOCK
-- Performing Test HAVE_STEADY_CLOCK
-- Performing Test HAVE_STEADY_CLOCK -- success
-- Configuring done
-- Generating done
CMake Warning:
  Manually-specified variables were not used by the project:

    CLANG_OPENMP_NVPTX_DEFAULT_ARCH
    LIBOMPTARGET_DEP_LIBELF_LIBRARIES
    LIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES

Has any of run into this issues before? Does not look the configure would support target offload.
Any help greatly appreciated,
Greetings
Gabriele






Gabriele Jost

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Gabriele Jost       NASA Ames Research Center
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