File size: 3,680 Bytes
56d74b6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | # Licensed under a 3-clause BSD style license - see LICENSE.rst
import os
import glob
from distutils import log
from distutils.extension import Extension
from astropy_helpers import setup_helpers
from astropy_helpers.utils import import_file
from astropy_helpers.version_helpers import get_pkg_version_module
ERFAPKGDIR = os.path.relpath(os.path.dirname(__file__))
ERFA_SRC = os.path.abspath(os.path.join(ERFAPKGDIR, '..', '..',
'cextern', 'erfa'))
SRC_FILES = glob.glob(os.path.join(ERFA_SRC, '*'))
SRC_FILES += [os.path.join(ERFAPKGDIR, filename)
for filename in ['pav2pv.c', 'pv2pav.c', 'erfa_additions.h',
'ufunc.c.templ', 'core.py.templ',
'erfa_generator.py']]
GEN_FILES = [os.path.join(ERFAPKGDIR, 'core.py'),
os.path.join(ERFAPKGDIR, 'ufunc.c')]
def pre_build_py_hook(cmd_obj):
preprocess_source()
def pre_build_ext_hook(cmd_obj):
preprocess_source()
def pre_sdist_hook(cmd_obj):
preprocess_source()
def preprocess_source():
# Generating the ERFA wrappers should only be done if needed. This also
# ensures that it is not done for any release tarball since those will
# include core.py and ufunc.c.
if all(os.path.exists(filename) for filename in GEN_FILES):
# Determine modification times
erfa_mtime = max(os.path.getmtime(filename) for filename in SRC_FILES)
gen_mtime = min(os.path.getmtime(filename) for filename in GEN_FILES)
version = import_file(os.path.join(ERFAPKGDIR, '..', 'version.py'))
if gen_mtime > erfa_mtime:
# If generated source is recent enough, don't update
return
elif version.release:
# or, if we're on a release, issue a warning, but go ahead and use
# the wrappers anyway
log.warn('WARNING: The autogenerated wrappers in astropy._erfa '
'seem to be older than the source templates used to '
'create them. Because this is a release version we will '
'use them anyway, but this might be a sign of some sort '
'of version mismatch or other tampering. Or it might just '
'mean you moved some files around or otherwise '
'accidentally changed timestamps.')
return
# otherwise rebuild the autogenerated files
# If jinja2 isn't present, then print a warning and use existing files
try:
import jinja2 # pylint: disable=W0611
except ImportError:
log.warn("WARNING: jinja2 could not be imported, so the existing "
"ERFA core.py and ufunc.c files will be used")
return
gen = import_file(os.path.join(ERFAPKGDIR, 'erfa_generator.py'))
gen.main(verbose=False)
def get_extensions():
sources = [os.path.join(ERFAPKGDIR, fn)
for fn in ("ufunc.c", "pav2pv.c", "pv2pav.c")]
include_dirs = ['numpy']
libraries = []
if setup_helpers.use_system_library('erfa'):
libraries.append('erfa')
else:
# get all of the .c files in the cextern/erfa directory
erfafns = os.listdir(ERFA_SRC)
sources.extend(['cextern/erfa/' + fn
for fn in erfafns if fn.endswith('.c')])
include_dirs.append('cextern/erfa')
erfa_ext = Extension(
name="astropy._erfa.ufunc",
sources=sources,
include_dirs=include_dirs,
libraries=libraries,
language="c",)
return [erfa_ext]
def get_external_libraries():
return ['erfa']
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