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| Direktori : /snap/certbot/5911/lib/python3.12/site-packages/setuptools/_distutils/compilers/platform/ |
| Current File : //snap/certbot/5911/lib/python3.12/site-packages/setuptools/_distutils/compilers/platform/macos.py |
"""macOS-specific compiler support."""
from __future__ import annotations
import os
import platform
import sys
import sysconfig
from collections.abc import Mapping
from typing import TypeVar
from ..errors import PlatformError
_MappingT = TypeVar("_MappingT", bound=Mapping)
VERSION_VAR = 'MACOSX_DEPLOYMENT_TARGET'
if sys.platform == 'darwin':
from _osx_support import compiler_fixup
else:
def compiler_fixup(compiler_so, cc_args):
"""Off macOS there's nothing to fix up."""
return compiler_so
def customize_compiler(config_vars) -> None:
"""Apply macOS SDK/architecture fixups to build config vars, in place.
A no-op off macOS. Mirrors distutils' historical ``_customize_macos`` to
support interpreters from binary installers, where the user's build tools
and OS version may differ from the system Python itself was built on.
"""
if sys.platform == 'darwin':
import _osx_support
_osx_support.customize_compiler(config_vars)
_syscfg_target_ver = None
def _clear_cached_target_ver():
"""For testing only. Do not call."""
global _syscfg_target_ver
_syscfg_target_ver = None
def _target_ver_from_syscfg():
"""The deployment target latched into the interpreter's configuration."""
global _syscfg_target_ver
if _syscfg_target_ver is None:
_syscfg_target_ver = sysconfig.get_config_var(VERSION_VAR) or ''
return _syscfg_target_ver
def _split_version(s: str) -> list[int]:
return [int(n) for n in s.split('.')]
def target_ver() -> str | None:
"""Return the version of macOS for which we are building.
Defaults to the version latched in sysconfig when the interpreter was
built, unless overridden by ``MACOSX_DEPLOYMENT_TARGET``. Returns None if
neither source has a value.
"""
syscfg_ver = _target_ver_from_syscfg()
env_ver = os.environ.get(VERSION_VAR)
if env_ver:
# An override below 10.3 while the interpreter was configured for 10.3+
# would build extensions with an LDSHARED that uses
# '-undefined dynamic_lookup', which only works on >= 10.3.
if (
syscfg_ver
and _split_version(syscfg_ver) >= [10, 3]
and _split_version(env_ver) < [10, 3]
):
raise PlatformError(
f'${VERSION_VAR} mismatch: now "{env_ver}" but "{syscfg_ver}" '
'during configure; must use 10.3 or later'
)
return env_ver
return syscfg_ver or None
def inject_ver(env: _MappingT | None) -> _MappingT | dict[str, str | int] | None:
"""
Ensure a subprocess inherits the deployment target the build was
configured with, so extensions link against a consistent macOS version.
"""
if platform.system() != 'Darwin':
return env
ver = target_ver()
update = {VERSION_VAR: ver} if ver else {}
resolved = os.environ if env is None else env
return {**resolved, **update}
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