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# Licensed under a 3-clause BSD style license - see LICENSE.rst
from __future__ import absolute_import
from distutils.core import Extension
from os.path import join
import sys
from astropy_helpers import setup_helpers
def get_external_libraries():
return ['expat']
def get_extensions(build_type='release'):
XML_DIR = 'astropy/utils/xml/src'
cfg = setup_helpers.DistutilsExtensionArgs({
'sources': [join(XML_DIR, "iterparse.c")]
})
if setup_helpers.use_system_library('expat'):
cfg.update(setup_helpers.pkg_config(['expat'], ['expat']))
else:
EXPAT_DIR = 'cextern/expat/lib'
cfg['sources'].extend([
join(EXPAT_DIR, fn) for fn in
["xmlparse.c", "xmlrole.c", "xmltok.c", "xmltok_impl.c"]])
cfg['include_dirs'].extend([XML_DIR, EXPAT_DIR])
if sys.platform.startswith('linux'):
# This is to ensure we only export the Python entry point
# symbols and the linker won't try to use the system expat in
# place of ours.
cfg['extra_link_args'].extend([
'-Wl,--version-script={0}'.format(
join(XML_DIR, 'iterparse.map'))
])
cfg['define_macros'].append(("HAVE_EXPAT_CONFIG_H", 1))
if sys.byteorder == 'big':
cfg['define_macros'].append(('BYTEORDER', '4321'))
else:
cfg['define_macros'].append(('BYTEORDER', '1234'))
if sys.platform != 'win32':
cfg['define_macros'].append(('HAVE_UNISTD_H', None))
return [Extension("astropy.utils.xml._iterparser", **cfg)]
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