content: import os
  import os.path
  
  import numpy
  from numpy.distutils.misc_util import Configuration
  
  from sklearn._build_utils import get_blas_info
  
  
  def configuration(parent_package="", top_path=None):
      config = Configuration("metrics", parent_package, top_path)
  
      cblas_libs, blas_info = get_blas_info()
      if os.name == 'posix':
          cblas_libs.append('m')
  
      config.add_extension("pairwise_fast",
                           sources=["pairwise_fast.c"],
                           include_dirs=[os.path.join('..', 'src', 'cblas'),
                                         numpy.get_include(),
                                         blas_info.pop('include_dirs', [])],
                           libraries=cblas_libs,
                           extra_compile_args=blas_info.pop('extra_compile_args',
                                                            []),
                           **blas_info)
  
      return config
  
  if __name__ == "__main__":
      from numpy.distutils.core import setup
      setup(**configuration().todict())
  