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import os
import pkgutil
import shutil
import subprocess
import sys
import tempfile
import textwrap
if not pkgutil.find_loader('setuptools'):
from distutils.core import setup
from distutils.extension import Extension
else:
from setuptools import setup
from setuptools.extension import Extension
from distutils.ccompiler import new_compiler
from distutils.errors import CompileError, LinkError
from itertools import filterfalse, takewhile
import distutils.sysconfig
def filter_unsupported_flags(compiler, flags):
args = takewhile(lambda argv: not argv.startswith('-'), [compiler] + flags)
if any('clang' in arg for arg in args):
return list(filterfalse(lambda f:
f in ('-mcet',
'-fstack-clash-protection',
'-fno-var-tracking-assignments',
'-Wno-deprecated-register',
'-Wno-gnu-designator') or
f.startswith('-fcf-protection'),
flags))
else:
return flags
def monkey_with_compiler(customize):
def patched(compiler):
customize(compiler)
if compiler.compiler_type != 'unix':
return
compiler.compiler[1:] = \
filter_unsupported_flags(compiler.compiler[0],
compiler.compiler[1:])
compiler.compiler_so[1:] = \
filter_unsupported_flags(compiler.compiler_so[0],
compiler.compiler_so[1:])
return patched
distutils.sysconfig.customize_compiler = \
monkey_with_compiler(distutils.sysconfig.customize_compiler)
# PEP 440 versioning of the RBD package on PyPI
# Bump this version, after every changeset
__version__ = '2.0.0'
def get_python_flags(libs):
py_libs = sum((libs.split() for libs in
distutils.sysconfig.get_config_vars('LIBS', 'SYSLIBS')), [])
ldflags = list(filterfalse(lambda lib: lib.startswith('-l'), py_libs))
py_libs = [lib.replace('-l', '') for lib in
filter(lambda lib: lib.startswith('-l'), py_libs)]
compiler = new_compiler()
distutils.sysconfig.customize_compiler(compiler)
return dict(
include_dirs=[distutils.sysconfig.get_python_inc()],
library_dirs=distutils.sysconfig.get_config_vars('LIBDIR', 'LIBPL'),
libraries=libs + py_libs,
extra_compile_args=filter_unsupported_flags(
compiler.compiler[0],
compiler.compiler[1:] + distutils.sysconfig.get_config_var('CFLAGS').split()),
extra_link_args=(distutils.sysconfig.get_config_var('LDFLAGS').split() +
ldflags))
def check_sanity():
"""
Test if development headers and library for rbd is available by compiling a dummy C program.
"""
CEPH_SRC_DIR = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
'..',
'..'
)
tmp_dir = tempfile.mkdtemp(dir=os.environ.get('TMPDIR', os.path.dirname(__file__)))
tmp_file = os.path.join(tmp_dir, 'rbd_dummy.c')
with open(tmp_file, 'w') as fp:
dummy_prog = textwrap.dedent("""
#include <stddef.h>
#include <rbd/librbd.h>
int main(void) {
rados_t cluster;
rados_create(&cluster, NULL);
return 0;
}
""")
fp.write(dummy_prog)
compiler = new_compiler()
distutils.sysconfig.customize_compiler(compiler)
if 'CEPH_LIBDIR' in os.environ:
# The setup.py has been invoked by a top-level Ceph make.
# Set the appropriate CFLAGS and LDFLAGS
compiler.set_include_dirs([os.path.join(CEPH_SRC_DIR, 'include')])
compiler.set_library_dirs([os.environ.get('CEPH_LIBDIR')])
try:
compiler.define_macro('_FILE_OFFSET_BITS', '64')
link_objects = compiler.compile(
sources=[tmp_file],
output_dir=tmp_dir
)
compiler.link_executable(
objects=link_objects,
output_progname=os.path.join(tmp_dir, 'rbd_dummy'),
libraries=['rbd', 'rados'],
output_dir=tmp_dir,
)
except CompileError:
print('\nCompile Error: RBD development headers not found', file=sys.stderr)
return False
except LinkError:
print('\nLink Error: RBD library not found', file=sys.stderr)
return False
else:
return True
finally:
shutil.rmtree(tmp_dir)
if 'BUILD_DOC' in os.environ or 'READTHEDOCS' in os.environ:
ext_args = {}
cython_constants = dict(BUILD_DOC=True)
cythonize_args = dict(compile_time_env=cython_constants)
elif check_sanity():
ext_args = get_python_flags(['rados', 'rbd'])
cython_constants = dict(BUILD_DOC=False)
include_path = [os.path.join(os.path.dirname(__file__), "..", "rados")]
cythonize_args = dict(compile_time_env=cython_constants,
include_path=include_path)
else:
sys.exit(1)
cmdclass = {}
try:
from Cython.Build import cythonize
from Cython.Distutils import build_ext
cmdclass = {'build_ext': build_ext}
except ImportError:
print("WARNING: Cython is not installed.")
if not os.path.isfile('rbd.c'):
print('ERROR: Cannot find Cythonized file rbd.c', file=sys.stderr)
sys.exit(1)
else:
def cythonize(x, **kwargs):
return x
source = "rbd.c"
else:
source = "rbd.pyx"
# Disable cythonification if we're not really building anything
if (len(sys.argv) >= 2 and
any(i in sys.argv[1:] for i in ('--help', 'clean', 'egg_info', '--version')
)):
def cythonize(x, **kwargs):
return x
setup(
name='rbd',
version=__version__,
description="Python bindings for the RBD library",
long_description=(
"This package contains Python bindings for interacting with the "
"RADOS Block Device (RBD) library. rbd is a utility for manipulating "
"rados block device images, used by the Linux rbd driver and the rbd "
"storage driver for QEMU/KVM. RBD images are simple block devices that "
"are striped over objects and stored in a RADOS object store. The size "
"of the objects the image is striped over must be a power of two."
),
url='https://github.com/ceph/ceph/tree/master/src/pybind/rbd',
license='LGPLv2+',
platforms='Linux',
ext_modules=cythonize(
[
Extension(
"rbd",
[source],
**ext_args
)
],
compiler_directives={'language_level': sys.version_info.major},
build_dir=os.environ.get("CYTHON_BUILD_DIR", None),
**cythonize_args
),
classifiers=[
'Intended Audience :: Developers',
'Intended Audience :: System Administrators',
'License :: OSI Approved :: GNU Lesser General Public License v2 or later (LGPLv2+)',
'Operating System :: POSIX :: Linux',
'Programming Language :: Cython',
'Programming Language :: Python :: 3'
],
cmdclass=cmdclass,
)
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