old_contents: #!/usr/bin/env python3
  # Copyright (c) 2017-present, Facebook, Inc.
  # All rights reserved.
  #
  # This source code is licensed under the license found in the LICENSE file in
  # the root directory of this source tree. An additional grant of patent rights
  # can be found in the PATENTS file in the same directory.
  
  from setuptools import setup, find_packages, Extension
  import sys
  
  
  if sys.version_info < (3,):
      sys.exit('Sorry, Python3 is required for fairseq.')
  
  with open('README.md') as f:
      readme = f.read()
  
  
  bleu = Extension(
      'fairseq.libbleu',
      sources=[
          'fairseq/clib/libbleu/libbleu.cpp',
          'fairseq/clib/libbleu/module.cpp',
      ],
      extra_compile_args=['-std=c++11'],
  )
  
  
  setup(
      name='fairseq',
      version='0.7.1',
      description='Facebook AI Research Sequence-to-Sequence Toolkit',
      url='https://github.com/pytorch/fairseq',
      classifiers=[
          'Intended Audience :: Science/Research',
          'License :: OSI Approved :: BSD License',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Topic :: Scientific/Engineering :: Artificial Intelligence',
      ],
      long_description=readme,
      long_description_content_type='text/markdown',
      install_requires=[
          'cffi',
          'numpy',
          'sacrebleu',
          'torch',
          'tqdm',
      ],
      packages=find_packages(exclude=['scripts', 'tests']),
      ext_modules=[bleu],
      test_suite='tests',
      entry_points={
          'console_scripts': [
              'fairseq-eval-lm = fairseq_cli.eval_lm:cli_main',
              'fairseq-generate = fairseq_cli.generate:cli_main',
              'fairseq-interactive = fairseq_cli.interactive:cli_main',
              'fairseq-preprocess = fairseq_cli.preprocess:cli_main',
              'fairseq-train = fairseq_cli.train:cli_main',
              'fairseq-score = fairseq_cli.score:main',
          ],
      },
  )
  
new_contents: #!/usr/bin/env python3
  # Copyright (c) 2017-present, Facebook, Inc.
  # All rights reserved.
  #
  # This source code is licensed under the license found in the LICENSE file in
  # the root directory of this source tree. An additional grant of patent rights
  # can be found in the PATENTS file in the same directory.
  
  from setuptools import setup, find_packages, Extension
  import sys
  
  
  if sys.version_info < (3,):
      sys.exit('Sorry, Python3 is required for fairseq.')
  
  with open('README.md') as f:
      readme = f.read()
  
  if sys.platform == 'darwin':
      extra_compile_args = ['-stdlib=libc++']
  else:
      extra_compile_args = ['-std=c++11']
  bleu = Extension(
      'fairseq.libbleu',
      sources=[
          'fairseq/clib/libbleu/libbleu.cpp',
          'fairseq/clib/libbleu/module.cpp',
      ],
      extra_compile_args=extra_compile_args,
  )
  
  
  setup(
      name='fairseq',
      version='0.7.1',
      description='Facebook AI Research Sequence-to-Sequence Toolkit',
      url='https://github.com/pytorch/fairseq',
      classifiers=[
          'Intended Audience :: Science/Research',
          'License :: OSI Approved :: BSD License',
          'Programming Language :: Python :: 3.5',
          'Programming Language :: Python :: 3.6',
          'Topic :: Scientific/Engineering :: Artificial Intelligence',
      ],
      long_description=readme,
      long_description_content_type='text/markdown',
      install_requires=[
          'cffi',
          'numpy',
          'sacrebleu',
          'torch',
          'tqdm',
      ],
      packages=find_packages(exclude=['scripts', 'tests']),
      ext_modules=[bleu],
      test_suite='tests',
      entry_points={
          'console_scripts': [
              'fairseq-eval-lm = fairseq_cli.eval_lm:cli_main',
              'fairseq-generate = fairseq_cli.generate:cli_main',
              'fairseq-interactive = fairseq_cli.interactive:cli_main',
              'fairseq-preprocess = fairseq_cli.preprocess:cli_main',
              'fairseq-train = fairseq_cli.train:cli_main',
              'fairseq-score = fairseq_cli.score:main',
          ],
      },
  )
  
subject: Add specific compile flags for macOS (#862)