[clang] [libclc] [clang] Add the ability to link libclc OpenCL libraries (PR #146503)

[Wenju He via cfe-commits]

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@@ -92,10 +95,14 @@ else()
     get_host_tool_path( llvm-link LLVM_LINK llvm-link_exe llvm-link_target )
     get_host_tool_path( opt OPT opt_exe opt_target )
   endif()
-endif()
 
-# Setup the paths where libclc runtimes should be stored.
-set( LIBCLC_OUTPUT_LIBRARY_DIR ${CMAKE_CURRENT_BINARY_DIR} )
+  # Setup the paths where libclc runtimes should be stored. By default, in an
+  # in-tree build we place the libraries in clang's resource driectory.
+  get_clang_resource_dir( LIBCLC_OUTPUT_DIR PREFIX ${LLVM_LIBRARY_OUTPUT_INTDIR}/.. )
+
+  # Note we do not adhere to LLVM_ENABLE_PER_TARGET_RUNTIME_DIR.
+  set( LIBCLC_OUTPUT_LIBRARY_DIR ${LIBCLC_OUTPUT_DIR}/lib/libclc )
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wenju-he wrote:

will be fixed by https://github.com/llvm/llvm-project/pull/152703

https://github.com/llvm/llvm-project/pull/146503