[Openmp-dev] avoid building clang-13 32 bit runtimes

[Jost, Gabriele (ARC-TNC)[Supersmith] via Openmp-dev]

Hello,
I am trying to build clang-13 with OpenMP target offload. I am getting a failure when it is trying to build the i386 runtime, which I really don’t need:

In file included from /nobackupnfs2/gjost/clang-13/llvm-13.x/compiler-rt/lib/builtins/absvdi2.c:13:
In file included from /nobackupnfs2/gjost/clang-13/llvm-13.x/compiler-rt/lib/builtins/int_lib.h:93:
In file included from /usr/include/limits.h:26:
In file included from /usr/include/features.h:399:
/usr/include/gnu/stubs.h:7:11: fatal error: 'gnu/stubs-32.h' file not found
# include <gnu/stubs-32.h>
          ^~~~~~~~~~~~~~~~

I only have a gnu/stubs-64.h

Is there a way to disable all 32 bit runtimes?

I am currently using these CMake options

CMAKE_OPTIONS="\
    -DLLVM_ENABLE_PROJECTS=clang;clang-tools-extra\
    -DLLVM_ENABLE_RUNTIMES=openmp;compiler-rt \
    -DLLVM_TARGETS_TO_BUILD=X86;NVPTX \
    #-DCMAKE_LIBRARY_PATH='${LD_LIBRARY_PATH};/lib64;${CUDA_PATH}/lib64/stubs' \
    -DCMAKE_LIBRARY_PATH='${CUDA_PATH}/lib64/stubs' \
    -DCMAKE_C_COMPILER=gcc\
    -DCMAKE_CXX_COMPILER=g++ \
    -DLLVM_ENABLE_BACKTRACES=ON \
    -DLLVM_ENABLE_WERROR=OFF \
    -DLLVM_ENABLE_RTTI=ON \
    -DLIBOMP_FORTRAN_MODULES=ON \
    -DOPENMP_ENABLE_LIBOMPTARGET=ON \
    -DLIBOMPTARGET_NVPTX_COMPUTE_CAPABILITIES=35,60,70 \
    -DCLANG_OPENMP_NVPTX_DEFAULT_ARCH=sm_70 "


Gabriele Jost

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Gabriele Jost       NASA Ames Research Center
Email: Gabriele.Jost at nasa.gov    Mail Stop 258-6
Work Phone: (650) 604-0468     Bldg. 258, Rm. 232-4
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Development/Optimization         Moffett Field, CA 94035-0001
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