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import os
import sys
from glob import glob
from Cython.Distutils.build_ext import new_build_ext as build_ext
from setuptools import Extension, setup
from setuptools.errors import CCompilerError, ExecError, PlatformError
try:
# determine CPU support for SSE2 and AVX2
import cpuinfo
cpu_info = cpuinfo.get_cpu_info()
flags = cpu_info.get('flags', [])
except Exception:
# cpuinfo not available or does not support the architecture/os
flags = []
have_sse2 = 'sse2' in flags
have_avx2 = 'avx2' in flags
disable_sse2 = 'DISABLE_NUMCODECS_SSE2' in os.environ
disable_avx2 = 'DISABLE_NUMCODECS_AVX2' in os.environ
# setup common compile arguments
have_cflags = 'CFLAGS' in os.environ
base_compile_args = []
if have_cflags:
# respect compiler options set by user
pass
elif os.name == 'posix':
if disable_sse2:
base_compile_args.append('-mno-sse2')
elif have_sse2:
base_compile_args.append('-msse2')
if disable_avx2:
base_compile_args.append('-mno-avx2')
elif have_avx2:
base_compile_args.append('-mavx2')
# On macOS, force libc++ in case the system tries to use `stdlibc++`.
# The latter is often absent from modern macOS systems.
if sys.platform == 'darwin':
base_compile_args.append('-stdlib=libc++')
def info(*msg):
kwargs = dict(file=sys.stdout)
print('[numcodecs]', *msg, **kwargs)
def error(*msg):
kwargs = dict(file=sys.stderr)
print('[numcodecs]', *msg, **kwargs)
def blosc_extension():
info('setting up Blosc extension')
extra_compile_args = base_compile_args.copy()
define_macros = []
# setup blosc sources
blosc_sources = [f for f in glob('c-blosc/blosc/*.c')
if 'avx2' not in f and 'sse2' not in f]
include_dirs = [os.path.join('c-blosc', 'blosc')]
# add internal complibs
blosc_sources += glob('c-blosc/internal-complibs/lz4*/*.c')
blosc_sources += glob('c-blosc/internal-complibs/snappy*/*.cc')
blosc_sources += glob('c-blosc/internal-complibs/zlib*/*.c')
blosc_sources += glob('c-blosc/internal-complibs/zstd*/common/*.c')
blosc_sources += glob('c-blosc/internal-complibs/zstd*/compress/*.c')
blosc_sources += glob('c-blosc/internal-complibs/zstd*/decompress/*.c')
blosc_sources += glob('c-blosc/internal-complibs/zstd*/dictBuilder/*.c')
include_dirs += [d for d in glob('c-blosc/internal-complibs/*')
if os.path.isdir(d)]
include_dirs += [d for d in glob('c-blosc/internal-complibs/*/*')
if os.path.isdir(d)]
include_dirs += [d for d in glob('c-blosc/internal-complibs/*/*/*')
if os.path.isdir(d)]
define_macros += [('HAVE_LZ4', 1),
('HAVE_SNAPPY', 1),
('HAVE_ZLIB', 1),
('HAVE_ZSTD', 1)]
# define_macros += [('CYTHON_TRACE', '1')]
# SSE2
if have_sse2 and not disable_sse2:
info('compiling Blosc extension with SSE2 support')
extra_compile_args.append('-DSHUFFLE_SSE2_ENABLED')
blosc_sources += [f for f in glob('c-blosc/blosc/*.c') if 'sse2' in f]
if os.name == 'nt':
define_macros += [('__SSE2__', 1)]
else:
info('compiling Blosc extension without SSE2 support')
# AVX2
if have_avx2 and not disable_avx2:
info('compiling Blosc extension with AVX2 support')
extra_compile_args.append('-DSHUFFLE_AVX2_ENABLED')
blosc_sources += [f for f in glob('c-blosc/blosc/*.c') if 'avx2' in f]
if os.name == 'nt':
define_macros += [('__AVX2__', 1)]
else:
info('compiling Blosc extension without AVX2 support')
sources = ['numcodecs/blosc.pyx']
# define extension module
extensions = [
Extension('numcodecs.blosc',
sources=sources, # + blosc_sources,
include_dirs=include_dirs,
define_macros=define_macros,
extra_compile_args=extra_compile_args,
libraries=['blosc', 'z'],
),
]
return extensions
def zstd_extension():
info('setting up Zstandard extension')
zstd_sources = []
extra_compile_args = base_compile_args.copy()
include_dirs = []
define_macros = []
# setup sources - use zstd bundled in blosc
zstd_sources += glob('c-blosc/internal-complibs/zstd*/common/*.c')
zstd_sources += glob('c-blosc/internal-complibs/zstd*/compress/*.c')
zstd_sources += glob('c-blosc/internal-complibs/zstd*/decompress/*.c')
zstd_sources += glob('c-blosc/internal-complibs/zstd*/dictBuilder/*.c')
include_dirs += [d for d in glob('c-blosc/internal-complibs/zstd*')
if os.path.isdir(d)]
include_dirs += [d for d in glob('c-blosc/internal-complibs/zstd*/*')
if os.path.isdir(d)]
# define_macros += [('CYTHON_TRACE', '1')]
sources = ['numcodecs/zstd.pyx']
# define extension module
extensions = [
Extension('numcodecs.zstd',
sources=sources, # + zstd_sources,
include_dirs=include_dirs,
define_macros=define_macros,
extra_compile_args=extra_compile_args,
libraries=['zstd'],
),
]
return extensions
def lz4_extension():
info('setting up LZ4 extension')
extra_compile_args = base_compile_args.copy()
define_macros = []
# setup sources - use LZ4 bundled in blosc
lz4_sources = glob('c-blosc/internal-complibs/lz4*/*.c')
include_dirs = [d for d in glob('c-blosc/internal-complibs/lz4*') if os.path.isdir(d)]
include_dirs += ['numcodecs']
# define_macros += [('CYTHON_TRACE', '1')]
sources = ['numcodecs/lz4.pyx']
# define extension module
extensions = [
Extension('numcodecs.lz4',
sources=sources, # + lz4_sources,
include_dirs=include_dirs,
define_macros=define_macros,
extra_compile_args=extra_compile_args,
libraries=['lz4'],
),
]
return extensions
def vlen_extension():
info('setting up vlen extension')
extra_compile_args = base_compile_args.copy()
define_macros = []
# setup sources
include_dirs = ['numcodecs']
# define_macros += [('CYTHON_TRACE', '1')]
sources = ['numcodecs/vlen.pyx']
# define extension module
extensions = [
Extension('numcodecs.vlen',
sources=sources,
include_dirs=include_dirs,
define_macros=define_macros,
extra_compile_args=extra_compile_args,
),
]
return extensions
def compat_extension():
info('setting up compat extension')
extra_compile_args = base_compile_args.copy()
sources = ['numcodecs/compat_ext.pyx']
# define extension module
extensions = [
Extension('numcodecs.compat_ext',
sources=sources,
extra_compile_args=extra_compile_args),
]
return extensions
def shuffle_extension():
info('setting up shuffle extension')
extra_compile_args = base_compile_args.copy()
sources = ['numcodecs/_shuffle.pyx']
# define extension module
extensions = [
Extension('numcodecs._shuffle',
sources=sources,
extra_compile_args=extra_compile_args),
]
return extensions
if sys.platform == 'win32':
ext_errors = (CCompilerError, ExecError, PlatformError,
IOError, ValueError)
else:
ext_errors = (CCompilerError, ExecError, PlatformError)
class BuildFailed(Exception):
pass
class ve_build_ext(build_ext):
# This class allows C extension building to fail.
def run(self):
try:
build_ext.run(self)
except PlatformError as e:
error(e)
raise BuildFailed()
def build_extension(self, ext):
try:
build_ext.build_extension(self, ext)
except ext_errors as e:
error(e)
raise BuildFailed()
def run_setup(with_extensions):
if with_extensions:
ext_modules = (blosc_extension() + zstd_extension() + lz4_extension() +
compat_extension() + shuffle_extension() + vlen_extension())
cmdclass = dict(build_ext=ve_build_ext)
else:
ext_modules = []
cmdclass = {}
setup(
ext_modules=ext_modules,
cmdclass=cmdclass,
)
if __name__ == '__main__':
is_pypy = hasattr(sys, 'pypy_translation_info')
with_extensions = not is_pypy and 'DISABLE_NUMCODECS_CEXT' not in os.environ
run_setup(with_extensions)
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