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import os
import platform
import re
import sys
from setuptools import Distribution as _Distribution
from setuptools import Extension
from setuptools import setup
from setuptools.command.build_ext import build_ext
from setuptools.command.test import test as TestCommand
# attempt to use pep-632 imports for setuptools symbols; however,
# since these symbols were only added to setuptools as of 59.0.1,
# fall back to the distutils symbols otherwise
try:
from setuptools.errors import CCompilerError
from setuptools.errors import DistutilsExecError
from setuptools.errors import DistutilsPlatformError
except ImportError:
from distutils.errors import CCompilerError
from distutils.errors import DistutilsExecError
from distutils.errors import DistutilsPlatformError
cmdclass = {}
cpython = platform.python_implementation() == "CPython"
ext_errors = (CCompilerError, DistutilsExecError, DistutilsPlatformError)
if sys.platform == "win32":
# Work around issue https://github.com/pypa/setuptools/issues/1902
ext_errors += (IOError, TypeError)
extra_compile_args = []
elif sys.platform in ("linux", "linux2"):
# warn for undefined symbols in .c files
extra_compile_args = ["-Wundef", "-Werror=implicit-function-declaration"]
else:
extra_compile_args = []
ext_modules = [
Extension(
"sqlalchemy.cprocessors",
sources=["lib/sqlalchemy/cextension/processors.c"],
extra_compile_args=extra_compile_args,
),
Extension(
"sqlalchemy.cresultproxy",
sources=["lib/sqlalchemy/cextension/resultproxy.c"],
extra_compile_args=extra_compile_args,
),
Extension(
"sqlalchemy.cimmutabledict",
sources=["lib/sqlalchemy/cextension/immutabledict.c"],
extra_compile_args=extra_compile_args,
),
]
class BuildFailed(Exception):
def __init__(self):
self.cause = sys.exc_info()[1] # work around py 2/3 different syntax
class ve_build_ext(build_ext):
# This class allows C extension building to fail.
def run(self):
try:
build_ext.run(self)
except DistutilsPlatformError:
raise BuildFailed()
def build_extension(self, ext):
try:
build_ext.build_extension(self, ext)
except ext_errors:
raise BuildFailed()
except ValueError:
# this can happen on Windows 64 bit, see Python issue 7511
if "'path'" in str(sys.exc_info()[1]): # works with both py 2/3
raise BuildFailed()
raise
cmdclass["build_ext"] = ve_build_ext
class Distribution(_Distribution):
def has_ext_modules(self):
# We want to always claim that we have ext_modules. This will be fine
# if we don't actually have them (such as on PyPy) because nothing
# will get built, however we don't want to provide an overally broad
# Wheel package when building a wheel without C support. This will
# ensure that Wheel knows to treat us as if the build output is
# platform specific.
return True
class UseTox(TestCommand):
RED = 31
RESET_SEQ = "\033[0m"
BOLD_SEQ = "\033[1m"
COLOR_SEQ = "\033[1;%dm"
def run_tests(self):
sys.stderr.write(
"%s%spython setup.py test is deprecated by pypa. Please invoke "
"'tox' with no arguments for a basic test run.\n%s"
% (self.COLOR_SEQ % self.RED, self.BOLD_SEQ, self.RESET_SEQ)
)
sys.exit(1)
cmdclass["test"] = UseTox
def status_msgs(*msgs):
print("*" * 75)
for msg in msgs:
print(msg)
print("*" * 75)
with open(
os.path.join(os.path.dirname(__file__), "lib", "sqlalchemy", "__init__.py")
) as v_file:
VERSION = (
re.compile(r""".*__version__ = ["'](.*?)['"]""", re.S)
.match(v_file.read())
.group(1)
)
def run_setup(with_cext):
kwargs = {}
if with_cext:
kwargs["ext_modules"] = ext_modules
else:
if os.environ.get("REQUIRE_SQLALCHEMY_CEXT"):
raise AssertionError(
"Can't build on this platform with "
"REQUIRE_SQLALCHEMY_CEXT set."
)
kwargs["ext_modules"] = []
setup(version=VERSION, cmdclass=cmdclass, distclass=Distribution, **kwargs)
if not cpython:
run_setup(False)
status_msgs(
"WARNING: C extensions are not supported on "
+ "this Python platform, speedups are not enabled.",
"Plain-Python build succeeded.",
)
elif os.environ.get("DISABLE_SQLALCHEMY_CEXT"):
run_setup(False)
status_msgs(
"DISABLE_SQLALCHEMY_CEXT is set; "
+ "not attempting to build C extensions.",
"Plain-Python build succeeded.",
)
else:
try:
run_setup(True)
except BuildFailed as exc:
if os.environ.get("REQUIRE_SQLALCHEMY_CEXT"):
status_msgs(
"NOTE: C extension build is required because "
"REQUIRE_SQLALCHEMY_CEXT is set, and the build has failed; "
"will not degrade to non-C extensions"
)
raise
status_msgs(
exc.cause,
"WARNING: The C extension could not be compiled, "
+ "speedups are not enabled.",
"Failure information, if any, is above.",
"Retrying the build without the C extension now.",
)
run_setup(False)
status_msgs(
"WARNING: The C extension could not be compiled, "
+ "speedups are not enabled.",
"Plain-Python build succeeded.",
)
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