code: def get_library_dirs(self):
      opt = []
      if sys.platform[:5] != "linux":
          d = self.get_libgcc_dir()
          if d:
              # if windows and not cygwin, libg2c lies in a different folder
              if sys.platform == "win32" and not d.startswith(
                  "/usr/lib"
              ):
                  d = os.path.normpath(d)
                  path = os.path.join(d, "lib%s.a" % self.g2c)
                  if not os.path.exists(path):
                      root = os.path.join(d, *((os.pardir,) * 4))
                      d2 = os.path.abspath(os.path.join(root, "lib"))
                      path = os.path.join(d2, "lib%s.a" % self.g2c)
                      if os.path.exists(path):
                          opt.append(d2)
              opt.append(d)
      # For Macports / Linux, libgfortran and libgcc are not co-located
      lib_gfortran_dir = self.get_libgfortran_dir()
      if lib_gfortran_dir:
          opt.append(lib_gfortran_dir)
      return opt
  
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 6 for calling the GnuFCompiler obj's underlying member method code with example usage: obj.get_library_dirs() and returns: opt