How do you tell pyximport to use the cython --cplus option?

pyximport is super handy but I can't figure out how to get it to engage the C++ language options for Cython. From the command line you'd run cython --cplus foo.pyx. How do you achieve the equivalent with pyximport? Thanks!

One way to make Cython create C++ files is to use a pyxbld file. For example, create foo.pyxbld containing the following:

def make_ext(modname, pyxfilename):
    from distutils.extension import Extension
    return Extension(name=modname,
                     sources=[pyxfilename],
                     language='c++')

Here's a hack.

The following code monkey-patches the get_distutils_extension function in pyximport so that the Extension objects it creates all have their language attribute set to c++.

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++'
    return extension_mod,setup_args

pyximport.pyximport.get_distutils_extension = new_get_distutils_extension

Put the above code in pyximportcpp.py. Then, instead of using import pyximport; pyximport.install(), use import pyximportcpp; pyximportcpp.install().