File: CMakeLists.txt

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llvm-toolchain-17 1%3A17.0.6-22
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add_startup_object(
  crt1
  SRC
    start.cpp
  DEPENDS
    libc.src.__support.RPC.rpc_client
    libc.src.__support.GPU.utils
    libc.src.stdlib.exit
    libc.src.stdlib.atexit
  COMPILE_OPTIONS
    -ffreestanding # To avoid compiler warnings about calling the main function.
    -fno-builtin
    -nogpulib # Do not include any GPU vendor libraries.
    -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE}
    -emit-llvm # AMDGPU's intermediate object file format is bitcode.
    --target=${LIBC_GPU_TARGET_TRIPLE}
  NO_GPU_BUNDLE # Compile this file directly without special GPU handling.
)
get_fq_target_name(crt1 fq_name)

# Ensure that clang uses the correct linker for this object type.
target_link_libraries(
  ${fq_name}
  PUBLIC
  "-mcpu=${LIBC_GPU_TARGET_ARCHITECTURE}"
  "--target=${LIBC_GPU_TARGET_TRIPLE}"
  "-flto"
  "-Wl,-mllvm,-amdgpu-lower-global-ctor-dtor=0"
)