[PATCH] D147582: [libc] Forward CUDA options to the runtimes invocation of `libc`

[Joseph Huber via Phabricator via llvm-commits]

jhuber6 created this revision.
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Some configurations may require `-DCUDAToolkit_ROOT` to find CUDA
properly. This is currently not forwarded to the CMake invocation. This
patch adds a prefix so it will be visible when the runtimes build is
started.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147582

Files:
  llvm/runtimes/CMakeLists.txt


Index: llvm/runtimes/CMakeLists.txt
===================================================================
--- llvm/runtimes/CMakeLists.txt
+++ llvm/runtimes/CMakeLists.txt
@@ -183,6 +183,10 @@
   if(canon_name STREQUAL "LIBC")
     list(APPEND prefixes "LLVM_LIBC")
     list(APPEND prefixes "LIBC_")
+    # The `libc` project may require '-DCUDAToolkit_ROOT' in GPU mode.
+    if(LIBC_GPU_BUILD OR LIBC_GPU_ARCHITECTURES)
+      list(APPEND prefixes "CUDA")
+    endif()
   endif()
 
   string(FIND ${projName} "lib" LIB_IDX)


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