include(CheckSymbolExists)

macro(detect_target_arch)
  check_symbol_exists(__aarch64__ "" __AARCH64)
  check_symbol_exists(__x86_64__ "" __X86_64)

  if(NOT __AARCH64 AND NOT __X86_64)
    message(FATAL "knowhere only support amd64 and arm64.")
  endif()
endmacro()

detect_target_arch()