cmake HAVE_REGISTER_FRAME examples

Lewuathe/mlir-hello thirdparty/llvm-project/llvm/cmake/config-ix.cmake :311

check_symbol_exists(__register_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_REGISTER_FRAME)

root-project/root interpreter/llvm-project/llvm/cmake/config-ix.cmake :274

check_symbol_exists(__register_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_REGISTER_FRAME)

NVIDIA/MDL-SDK src/mdl/jit/llvm/dist/cmake/config-ix.cmake :211

check_symbol_exists(__register_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_REGISTER_FRAME)