cmake HAVE_DEREGISTER_FRAME examples

Lewuathe/mlir-hello thirdparty/llvm-project/llvm/cmake/config-ix.cmake :312

check_symbol_exists(__deregister_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_DEREGISTER_FRAME)

root-project/root interpreter/llvm-project/llvm/cmake/config-ix.cmake :275

check_symbol_exists(__deregister_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_DEREGISTER_FRAME)

NVIDIA/MDL-SDK src/mdl/jit/llvm/dist/cmake/config-ix.cmake :212

check_symbol_exists(__deregister_frame "${CMAKE_CURRENT_LIST_DIR}/unwind.h" HAVE_DEREGISTER_FRAME)