Eli Schwartz
2 years ago
committed by
Dylan Baker
parent
3bbfd4d4b8
commit
66b258b1ef
3 changed files with 146 additions and 118 deletions
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# Copyright 2022 The Meson development team |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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from __future__ import annotations |
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from pathlib import Path |
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import sysconfig |
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import typing as T |
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from .. import mlog |
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from .base import DependencyMethods, SystemDependency |
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from .factory import DependencyFactory |
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from ..environment import detect_cpu_family |
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if T.TYPE_CHECKING: |
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from ..environment import Environment |
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class Python3DependencySystem(SystemDependency): |
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def __init__(self, name: str, environment: 'Environment', kwargs: T.Dict[str, T.Any]) -> None: |
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super().__init__(name, environment, kwargs) |
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if not environment.machines.matches_build_machine(self.for_machine): |
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return |
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if not environment.machines[self.for_machine].is_windows(): |
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return |
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self.name = 'python3' |
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# We can only be sure that it is Python 3 at this point |
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self.version = '3' |
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self._find_libpy3_windows(environment) |
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@staticmethod |
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def get_windows_python_arch() -> T.Optional[str]: |
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pyplat = sysconfig.get_platform() |
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if pyplat == 'mingw': |
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pycc = sysconfig.get_config_var('CC') |
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if pycc.startswith('x86_64'): |
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return '64' |
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elif pycc.startswith(('i686', 'i386')): |
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return '32' |
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else: |
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mlog.log(f'MinGW Python built with unknown CC {pycc!r}, please file a bug') |
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return None |
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elif pyplat == 'win32': |
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return '32' |
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elif pyplat in {'win64', 'win-amd64'}: |
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return '64' |
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mlog.log(f'Unknown Windows Python platform {pyplat!r}') |
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return None |
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def get_windows_link_args(self) -> T.Optional[T.List[str]]: |
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pyplat = sysconfig.get_platform() |
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if pyplat.startswith('win'): |
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vernum = sysconfig.get_config_var('py_version_nodot') |
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if self.static: |
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libpath = Path('libs') / f'libpython{vernum}.a' |
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else: |
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comp = self.get_compiler() |
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if comp.id == "gcc": |
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libpath = Path(f'python{vernum}.dll') |
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else: |
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libpath = Path('libs') / f'python{vernum}.lib' |
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lib = Path(sysconfig.get_config_var('base')) / libpath |
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elif pyplat == 'mingw': |
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if self.static: |
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libname = sysconfig.get_config_var('LIBRARY') |
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else: |
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libname = sysconfig.get_config_var('LDLIBRARY') |
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lib = Path(sysconfig.get_config_var('LIBDIR')) / libname |
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if not lib.exists(): |
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mlog.log('Could not find Python3 library {!r}'.format(str(lib))) |
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return None |
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return [str(lib)] |
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def _find_libpy3_windows(self, env: 'Environment') -> None: |
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''' |
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Find python3 libraries on Windows and also verify that the arch matches |
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what we are building for. |
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''' |
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pyarch = self.get_windows_python_arch() |
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if pyarch is None: |
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self.is_found = False |
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return |
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arch = detect_cpu_family(env.coredata.compilers.host) |
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if arch == 'x86': |
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arch = '32' |
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elif arch == 'x86_64': |
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arch = '64' |
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else: |
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# We can't cross-compile Python 3 dependencies on Windows yet |
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mlog.log(f'Unknown architecture {arch!r} for', |
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mlog.bold(self.name)) |
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self.is_found = False |
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return |
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# Pyarch ends in '32' or '64' |
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if arch != pyarch: |
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mlog.log('Need', mlog.bold(self.name), 'for {}-bit, but ' |
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'found {}-bit'.format(arch, pyarch)) |
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self.is_found = False |
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return |
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# This can fail if the library is not found |
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largs = self.get_windows_link_args() |
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if largs is None: |
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self.is_found = False |
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return |
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self.link_args = largs |
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# Compile args |
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inc = sysconfig.get_path('include') |
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platinc = sysconfig.get_path('platinclude') |
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self.compile_args = ['-I' + inc] |
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if inc != platinc: |
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self.compile_args.append('-I' + platinc) |
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self.version = sysconfig.get_config_var('py_version') |
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self.is_found = True |
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@staticmethod |
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def log_tried() -> str: |
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return 'sysconfig' |
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python3_factory = DependencyFactory( |
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'python3', |
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[DependencyMethods.PKGCONFIG, DependencyMethods.SYSTEM, DependencyMethods.EXTRAFRAMEWORK], |
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system_class=Python3DependencySystem, |
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# There is no version number in the macOS version number |
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framework_name='Python', |
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# There is a python in /System/Library/Frameworks, but that's python 2.x, |
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# Python 3 will always be in /Library |
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extra_kwargs={'paths': ['/Library/Frameworks']}, |
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) |
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