code: def setup_library_info(self, options, environ):
      filename = section = None
      mpiopt = getattr(options, "mpi", None)
      mpiopt = environ.get("MPICFG", mpiopt)
      mpiopt = environ.get("MPI4PY_BUILD_MPICFG", mpiopt)
      if mpiopt:
          if "," in mpiopt:
              section, filename = mpiopt.split(",", 1)
          elif ":" in mpiopt:
              filename, section = mpiopt.split(":", 1)
          elif os.path.isfile(mpiopt):
              filename = mpiopt
          else:
              section = mpiopt
      if not filename:
          filename = "mpi.cfg"
      if not section:
          section = "mpi"
  
      mach = platform.machine()
      arch = platform.architecture()[0]
      plat = sys.platform
      osnm = os.name
      if plat.startswith("linux"):
          plat = "linux"
      elif plat.startswith("sunos"):
          plat = "solaris"
      elif plat.startswith("win"):
          plat = "windows"
      suffixes = []
      suffixes.append(plat + "-" + mach)
      suffixes.append(plat + "-" + arch)
      suffixes.append(plat)
      suffixes.append(osnm + "-" + mach)
      suffixes.append(osnm + "-" + arch)
      suffixes.append(osnm)
      suffixes.append(mach)
      suffixes.append(arch)
      sections = [section + "-" + s for s in suffixes]
      sections += [section]
      self.load(filename, sections)
      if not self:
          if os.name == "posix":
              self._setup_posix()
          if sys.platform == "win32":
              self._setup_windows()
  
imports: import os
  import sys
  import shlex
  import shutil
  import logging
  import platform
  from collections import OrderedDict
  from configparser import ConfigParser
  from configparser import Error
label_desc: Use image node_id 7 for calling the Config obj's underlying member method code with example usage: obj.setup_library_info(options, environ) without return types