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=============================
Using via `numpy.distutils`
=============================
:mod:`numpy.distutils` is part of Numpy extending standard Python ``distutils``
to deal with Fortran sources and F2PY signature files, e.g. compile Fortran
sources, call F2PY to construct extension modules, etc.
.. topic:: Example
Consider the following `setup file`__:
.. include:: setup_example.py
:literal:
Running
::
python setup_example.py build
will build two extension modules ``scalar`` and ``fib2`` to the
build directory.
__ setup_example.py
:mod:`numpy.distutils` extends ``distutils`` with the following features:
* ``Extension`` class argument ``sources`` may contain Fortran source
files. In addition, the list ``sources`` may contain at most one
F2PY signature file, and then the name of an Extension module must
match with the ``<modulename>`` used in signature file. It is
assumed that an F2PY signature file contains exactly one ``python
module`` block.
If ``sources`` does not contain a signature files, then F2PY is used
to scan Fortran source files for routine signatures to construct the
wrappers to Fortran codes.
Additional options to F2PY process can be given using ``Extension``
class argument ``f2py_options``.
* The following new ``distutils`` commands are defined:
``build_src``
to construct Fortran wrapper extension modules, among many other things.
``config_fc``
to change Fortran compiler options
as well as ``build_ext`` and ``build_clib`` commands are enhanced
to support Fortran sources.
Run
::
python <setup.py file> config_fc build_src build_ext --help
to see available options for these commands.
* When building Python packages containing Fortran sources, then one
can choose different Fortran compilers by using ``build_ext``
command option ``--fcompiler=<Vendor>``. Here ``<Vendor>`` can be one of the
following names::
absoft sun mips intel intelv intele intelev nag compaq compaqv gnu vast pg hpux
See ``numpy_distutils/fcompiler.py`` for up-to-date list of
supported compilers or run
::
f2py -c --help-fcompiler
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