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import os
import platform
import sys
from distutils.errors import CCompilerError
from distutils.errors import DistutilsExecError
from distutils.errors import DistutilsPlatformError
from setuptools import Extension
from setuptools import setup
from setuptools.command.build_ext import build_ext
ext_modules = [Extension("markupsafe._speedups", ["src/markupsafe/_speedups.c"])]
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 DistutilsPlatformError as e:
raise BuildFailed() from e
def build_extension(self, ext):
try:
build_ext.build_extension(self, ext)
except (CCompilerError, DistutilsExecError, DistutilsPlatformError) as e:
raise BuildFailed() from e
except ValueError as e:
# this can happen on Windows 64 bit, see Python issue 7511
if "'path'" in str(sys.exc_info()[1]): # works with Python 2 and 3
raise BuildFailed() from e
raise
def run_setup(with_binary):
setup(
cmdclass={"build_ext": ve_build_ext},
ext_modules=ext_modules if with_binary else [],
)
def show_message(*lines):
print("=" * 74)
for line in lines:
print(line)
print("=" * 74)
supports_speedups = platform.python_implementation() not in {
"PyPy",
"Jython",
"GraalVM",
}
if os.environ.get("CIBUILDWHEEL", "0") == "1" and supports_speedups:
run_setup(True)
elif supports_speedups:
try:
run_setup(True)
except BuildFailed:
show_message(
"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)
show_message(
"WARNING: The C extension could not be compiled, speedups"
" are not enabled.",
"Plain-Python build succeeded.",
)
else:
run_setup(False)
show_message(
"WARNING: C extensions are not supported on this Python"
" platform, speedups are not enabled.",
"Plain-Python build succeeded.",
)
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