old_contents: from blas_lapack_checkers import CheckCLAPACK, CheckCBLAS, CheckF77BLAS, CheckF77LAPACK
  from fft_checkers import CheckFFT
  
  from simple_check import NumpyCheckLibAndHeader
  
  from perflib import *
  from fortran import *
  
  from perflib_info import write_info
  
  import blas_lapack_checkers
  import fft_checkers
  import perflib
  import perflib_info
  
  __all__ = blas_lapack_checkers.__all__
  __all__ += fft_checkers.__all__
  __all__ += perflib.__all__
  __all__ += perflib_info.__all__
  __all__ += fortran.__all__
  __all__ += ['NumpyCheckLibAndHeader']
  
new_contents: from numscons.checkers.new.netlib_checkers import \
          CheckCblas as CheckCBLAS, \
          CheckF77Blas as CheckF77BLAS, \
          CheckF77Lapack as CheckF77LAPACK
  from numscons.checkers.new.common import \
          get_perflib_implementation
  from numscons.checkers.new.common import \
          write_configuration_results as write_info
  
  from numscons.checkers.simple_check import \
          NumpyCheckLibAndHeader
  from numscons.checkers.fortran import *
  from numscons.checkers import fortran
  
  # Those are for compatibility only
  def CheckCLAPACK(context, autoadd=1, check_version=0):
      context.Message("Checking for CLAPACK ... ")
      context.Result(0)
      return 0
  
  def IsVeclib(env, interface):
      return get_perflib_implementation(env, interface.upper()) == 'VECLIB'
  
  def IsAccelerate(env, interface):
      return get_perflib_implementation(env, interface.upper()) == 'ACCELERATE'
  
  def IsATLAS(env, interface):
      return get_perflib_implementation(env, interface.upper()) == 'ATLAS'
  
  def GetATLASVersion(env):
      return ''
  
  __all__ = []
  __all__ += ['CheckCBLAS', 'CheckF77LAPACK', 'CheckF77BLAS', 'CheckCLAPACK',
          'write_info', 'IsVeclib', 'IsAccelerate', 'IsATLAS', 'GetATLASVersion']
  __all__ += fortran.__all__
  __all__ += ['NumpyCheckLibAndHeader']
  
subject: Use the new framework for checkers.