[all-commits] [llvm/llvm-project] dd2ce3: [LLVM] Add per-target runtime directory to rpath (...

[Joseph Huber via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dd2ce3d8b558daefbbc6eb2f2026e6055a291f06
      https://github.com/llvm/llvm-project/commit/dd2ce3d8b558daefbbc6eb2f2026e6055a291f06
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2026-05-27 (Wed, 27 May 2026)

  Changed paths:
    M llvm/cmake/modules/AddLLVM.cmake

  Log Message:
  -----------
  [LLVM] Add per-target runtime directory to rpath (#199755)

Summary:
    This simply adds the LLVM_DEFAULT_TARGET_TRIPLE to the LLVM build's
rpath if present. This keeps things hermetic for the library (offload)
    that depends on it.
    
  The reason this is required is because `llvm-gpu-loader` calls
`DynamicLibrary` on the Offload runtime. However, in a shared library
build the actual call is in libLLVMSupport.so, which does not have this
RPath, so `dlopen` delegates to that which does not know how to find it.
The only options to fix this are to use `dlopen` directly in the loader,
    or add the rpath to the LLVM binaries.
    
I think this makes sense for LLVM, because the target-specific directory
    can contain LLVM related libraries.



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