old_contents: 
  def configuration(parent_package='',top_path=None):
      from numpy.distutils.misc_util import Configuration
      config = Configuration('fft', parent_package, top_path)
  
      config.add_data_dir('tests')
  
      # Configure pocketfft_internal
      config.add_extension('_pocketfft_internal',
                           sources=['_pocketfft.c']
                           )
  
      return config
  
  if __name__ == '__main__':
      from numpy.distutils.core import setup
      setup(configuration=configuration)
  
new_contents: import sys
  
  def configuration(parent_package='',top_path=None):
      from numpy.distutils.misc_util import Configuration
      config = Configuration('fft', parent_package, top_path)
  
      config.add_data_dir('tests')
  
      # AIX needs to be told to use large file support - at all times
      defs = [('_LARGE_FILES', None)] if sys.platform[:3] == "aix" else []
      # Configure pocketfft_internal
      config.add_extension('_pocketfft_internal',
                           sources=['_pocketfft.c'],
                           define_macros=defs,
                           )
  
      return config
  
  if __name__ == '__main__':
      from numpy.distutils.core import setup
      setup(configuration=configuration)
  
subject: Add _LARGE_FILES to def_macros[] when platform is AIX (gh-15938)