code: def get_libgcc_dir(self):
      try:
          output = subprocess.check_output(
              self.compiler_f77 + ["-print-libgcc-file-name"]
          )
      except (OSError, subprocess.CalledProcessError):
          pass
      else:
          output = filepath_from_subprocess_output(output)
          return os.path.dirname(output)
      return None
  
imports: import re
  import os
  import sys
  import warnings
  import platform
  import tempfile
  import hashlib
  import base64
  import subprocess
  from subprocess import Popen, PIPE, STDOUT
  from numpy.distutils.exec_command import filepath_from_subprocess_output
  from numpy.distutils.fcompiler import FCompiler
  from distutils.version import LooseVersion
label_desc: Use image node_id 4 for calling the GnuFCompiler obj's underlying member method code with example usage: obj.get_libgcc_dir() and returns: None, os