def get_info(pkgname, dirs=None):
"""
Return an info dict for a given C library.
The info dict contains the necessary options to use the C library.
Parameters
----------
pkgname : str
Name of the package (should match the name of the .ini file, without
the extension, e.g. foo for the file foo.ini).
dirs : sequence, optional
If given, should be a sequence of additional directories where to look
for npy-pkg-config files. Those directories are searched prior to the
NumPy directory.
Returns
-------
info : dict
The dictionary with build information.
Raises
------
PkgNotFound
If the package is not found.
See Also
--------
Configuration.add_npy_pkg_config, Configuration.add_installed_library,
get_pkg_info
Examples
--------
To get the necessary information for the npymath library from NumPy:
>>> npymath_info = np.distutils.misc_util.get_info('npymath')
>>> npymath_info #doctest: +SKIP
{'define_macros': [], 'libraries': ['npymath'], 'library_dirs':
['.../numpy/core/lib'], 'include_dirs': ['.../numpy/core/include']}
This info dict can then be used as input to a `Configuration` instance::
config.add_extension('foo', sources=['foo.c'], extra_info=npymath_info)
"""
from numpy.distutils.npy_pkg_config import parse_flags
pkg_info = get_pkg_info(pkgname, dirs)
# Translate LibraryInfo instance into a build_info dict
info = parse_flags(pkg_info.cflags())
for k, v in parse_flags(pkg_info.libs()).items():
info[k].extend(v)
# add_extension extra_info argument is ANAL
info['define_macros'] = info['macros']
del info['macros']
del info['ignored']
return info
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