text: # This file is part of QuTiP: Quantum Toolbox in Python.
  #
  #    Copyright (c) 2011 and later, The QuTiP Project
  #    All rights reserved.
  #
  #    Redistribution and use in source and binary forms, with or without
  #    modification, are permitted provided that the following conditions are
  #    met:
  #
  #    1. Redistributions of source code must retain the above copyright notice,
  #       this list of conditions and the following disclaimer.
  #
  #    2. Redistributions in binary form must reproduce the above copyright
  #       notice, this list of conditions and the following disclaimer in the
  #       documentation and/or other materials provided with the distribution.
  #
  #    3. Neither the name of the QuTiP: Quantum Toolbox in Python nor the names
  #       of its contributors may be used to endorse or promote products derived
  #       from this software without specific prior written permission.
  #
  #    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  #    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  #    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  #    PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  #    HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  #    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  #    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  #    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  #    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  #    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  #    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  ###############################################################################
  import sys, os
  import pyximport
  from pyximport import install
  
  old_get_distutils_extension = pyximport.pyximport.get_distutils_extension
  
  def new_get_distutils_extension(modname, pyxfilename, language_level=None):
      extension_mod, setup_args = old_get_distutils_extension(modname, pyxfilename, language_level)
      extension_mod.language='c++'
      # If on Win and Python version >= 3.5 and not in MSYS2 (i.e. Visual studio compile)
      if sys.platform == 'win32' and int(str(sys.version_info[0])+str(sys.version_info[1])) >= 35 and os.environ.get('MSYSTEM') is None:
          extension_mod.extra_compile_args = ['/w', '/O1']
      else:
          extension_mod.extra_compile_args = ['-w', '-O1']
          if sys.platform == 'darwin':
              extension_mod.extra_compile_args.append('-mmacosx-version-min=10.9')
              extension_mod.extra_link_args = ['-mmacosx-version-min=10.9']
      return extension_mod,setup_args
  
  pyximport.pyximport.get_distutils_extension = new_get_distutils_extension
  