code: def get_target_by_dump_machine(compiler):
      """Functor of get_target_triple that can get the target triple using compiler.
  
      Parameters
      ----------
      compiler : Optional[str]
          The compiler.
  
      Returns
      -------
      out: Callable
          A function that can get target triple according to dumpmachine option of compiler.
      """
  
      def get_target_triple():
          """Get target triple according to dumpmachine option of compiler."""
          if compiler:
              cmd = [compiler, "-dumpmachine"]
              proc = subprocess.Popen(
                  cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT
              )
              (out, _) = proc.communicate()
              if proc.returncode != 0:
                  msg = "dumpmachine error:\n"
                  msg += py_str(out)
                  return None
              return py_str(out)
          return None
  
      return get_target_triple
  
file_path: tvm/python/tvm/contrib/cc.py
imports: import sys
  import shutil
  import os
  import subprocess
  from .None import utils, tar
  from .._ffi.base import py_str
label_desc: Use image node_id 8 for calling a global function with example usage: get_target_by_dump_machine(compiler) and returns: get_target_triple, None, py_str, None