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[libc] Add CMake cache file for the GPU build #124589

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Merged
merged 1 commit into from
Jan 27, 2025
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[libc] Add CMake cache file for the GPU build #124589

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4 changes: 4 additions & 0 deletions libc/cmake/caches/gpu.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
set(LLVM_ENABLE_PROJECTS "clang;clang-tools-extra;lld" CACHE STRING "")
set(LLVM_RUNTIME_TARGETS default;amdgcn-amd-amdhsa;nvptx64-nvidia-cuda CACHE STRING "")
set(RUNTIMES_nvptx64-nvidia-cuda_LLVM_ENABLE_RUNTIMES "compiler-rt;libc" CACHE STRING "")
set(RUNTIMES_amdgcn-amd-amdhsa_LLVM_ENABLE_RUNTIMES "compiler-rt;libc" CACHE STRING "")
3 changes: 2 additions & 1 deletion libc/docs/gpu/building.rst
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Expand Up @@ -58,7 +58,8 @@ OpenMP support. We then set ``RUNTIMES_<triple>_LLVM_ENABLE_RUNTIMES`` to enable
``libc`` for the GPU targets. The ``LLVM_RUNTIME_TARGETS`` sets the enabled
targets to build, in this case we want the default target and the GPU targets.
Note that if ``libc`` were included in ``LLVM_ENABLE_RUNTIMES`` it would build
targeting the default host environment as well.
targeting the default host environment as well. Alternatively, you can point
your build towards the ``libc/cmake/caches/gpu.cmake`` cache file with ``-C``.

Runtimes cross build
--------------------
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