docs: def getdirs(self,libname):
          '''Implements the dylib search as specified in Apple documentation:
  
          http://developer.apple.com/documentation/DeveloperTools/Conceptual/
              DynamicLibraries/Articles/DynamicLibraryUsageGuidelines.html
  
          Before commencing the standard search, the method first checks
          the bundle's ``Frameworks`` directory if the application is running
          within a bundle (OS X .app).
          '''
  
          dyld_fallback_library_path = _environ_path("DYLD_FALLBACK_LIBRARY_PATH")
          if not dyld_fallback_library_path:
              dyld_fallback_library_path = [os.path.expanduser('~/lib'),
                                            '/usr/local/lib', '/usr/lib']
  
          dirs = []
  
          if '/' in libname:
              dirs.extend(_environ_path("DYLD_LIBRARY_PATH"))
          else:
              dirs.extend(_environ_path("LD_LIBRARY_PATH"))
              dirs.extend(_environ_path("DYLD_LIBRARY_PATH"))
  
          dirs.extend(self.other_dirs)
          dirs.append(".")
          dirs.append(os.path.dirname(__file__))
  
          if hasattr(sys, 'frozen') and sys.frozen == 'macosx_app':
              dirs.append(os.path.join(
                  os.environ['RESOURCEPATH'],
                  '..',
                  'Frameworks'))
  
          dirs.extend(dyld_fallback_library_path)
  
          return dirs