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# -*- coding: utf-8 -*-
"""
setup helpers for c-ares.
"""
from __future__ import print_function, absolute_import, division
import os
import os.path
import shutil
import sys
from _setuputils import Extension
import distutils.sysconfig # to get CFLAGS to pass into c-ares configure script pylint:disable=import-error
from _setuputils import WIN
from _setuputils import quoted_dep_abspath
from _setuputils import system
from _setuputils import should_embed
from _setuputils import LIBRARIES
from _setuputils import DEFINE_MACROS
from _setuputils import glob_many
from _setuputils import dep_abspath
from _setuputils import RUNNING_ON_CI
from _setuputils import RUNNING_FROM_CHECKOUT
from _setuputils import cythonize1
from _setuputils import get_include_dirs
CARES_EMBED = should_embed('c-ares')
# See #616, trouble building for a 32-bit python on a 64-bit platform
# (Linux).
_distutils_cflags = distutils.sysconfig.get_config_var("CFLAGS") or ''
cflags = _distutils_cflags + ((' ' + os.environ['CFLAGS']) if os.environ.get("CFLAGS") else '')
cflags = ('CFLAGS="%s"' % (cflags,)) if cflags else ''
# Use -r, not -e, for support of old solaris. See
# https://github.com/gevent/gevent/issues/777
ares_configure_command = ' '.join([
"(cd ", quoted_dep_abspath('c-ares'),
" && if [ -r include/ares_build.h ]; then cp include/ares_build.h include/ares_build.h.orig; fi ",
" && sh ./configure --disable-dependency-tracking --disable-tests -C " + cflags,
" && cp src/lib/ares_config.h include/ares_build.h \"$OLDPWD\" ",
" && cat include/ares_build.h ",
" && if [ -r include/ares_build.h.orig ]; then mv include/ares_build.h.orig include/ares_build.h; fi)",
"> configure-output.txt"
])
if 'GEVENT_MANYLINUX' in os.environ:
# Assumes that c-ares is pre-configured.
ares_configure_command = '(echo preconfigured) > configure-output.txt'
def configure_ares(bext, ext):
print("Embedding c-ares", bext, ext)
bdir = os.path.join(bext.build_temp, 'c-ares', 'lib', 'include')
ext.include_dirs.insert(0, bdir)
print("Inserted ", bdir, "in include dirs", ext.include_dirs)
bdir = os.path.join(bext.build_temp, 'c-ares', 'include')
ext.include_dirs.insert(0, bdir)
print("Inserted ", bdir, "in include dirs", ext.include_dirs)
if not os.path.isdir(bdir):
os.makedirs(bdir)
if WIN:
src = "deps\\c-ares\\include\\ares_build.h.dist"
dest = os.path.join(bdir, "ares_build.h")
print("Copying %r to %r" % (src, dest))
shutil.copy(src, dest)
return
cwd = os.getcwd()
os.chdir(bdir)
try:
if os.path.exists('ares_config.h') and os.path.exists('ares_build.h'):
return
try:
system(ares_configure_command)
except:
with open('configure-output.txt', 'r') as t:
print(t.read(), file=sys.stderr)
raise
finally:
os.chdir(cwd)
ARES = Extension(
name='gevent.resolver.cares',
sources=[
'src/gevent/resolver/cares.pyx'
],
include_dirs=get_include_dirs(
*(
[
os.path.join(dep_abspath('c-ares'), 'include'),
os.path.join(dep_abspath('c-ares'), 'src', 'lib'),
os.path.join(dep_abspath('c-ares'), 'src', 'lib', 'include'),
]
if CARES_EMBED
else []
)
),
libraries=list(LIBRARIES),
define_macros=list(DEFINE_MACROS),
depends=glob_many(
'src/gevent/resolver/cares_*.[ch]')
)
ares_required = RUNNING_ON_CI and RUNNING_FROM_CHECKOUT
ARES.optional = not ares_required
if CARES_EMBED:
ARES.sources += glob_many('deps/c-ares/src/lib/*.c')
ARES.sources += glob_many('deps/c-ares/src/lib/dsa/*.c')
ARES.sources += glob_many('deps/c-ares/src/lib/str/*.c')
ARES.sources += glob_many('deps/c-ares/src/lib/record/*.c')
ARES.sources += glob_many('deps/c-ares/src/lib/util/*.c')
ARES.sources += glob_many('deps/c-ares/src/lib/event/*.c')
ARES.sources += glob_many('deps/c-ares/src/lib/legacy/*.c')
ARES.configure = configure_ares
if WIN:
ARES.libraries += ['advapi32']
ARES.define_macros += [('CARES_STATICLIB', '')]
else:
ARES.define_macros += [('HAVE_CONFIG_H', '')]
if sys.platform != 'darwin':
ARES.libraries += ['rt']
else:
# libresolv dependency introduced in
# c-ares 1.16.1.
ARES.libraries += ['resolv']
ARES.define_macros += [('CARES_EMBED', '1')]
else:
ARES.libraries.append('cares')
ARES.define_macros += [('HAVE_NETDB_H', '')]
ARES.configure = lambda bext, ext: print("c-ares not embedded, not configuring", bext, ext)
ARES = cythonize1(ARES)
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