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# SPDX-License-Identifier: Apache-2.0
# Copyright 2016-2017 The Meson development team
from __future__ import annotations
import sysconfig
import typing as T
from .. import mesonlib
from . import ExtensionModule, ModuleInfo, ModuleState
from ..build import (
BuildTarget, CustomTarget, CustomTargetIndex, ExtractedObjects,
GeneratedList, SharedModule, StructuredSources, known_shmod_kwargs
)
from ..interpreter.type_checking import SHARED_MOD_KWS
from ..interpreterbase import typed_kwargs, typed_pos_args, noPosargs, noKwargs, permittedKwargs
from ..programs import ExternalProgram
if T.TYPE_CHECKING:
from ..interpreter.interpreter import BuildTargetSource
from ..interpreter.kwargs import SharedModule as SharedModuleKW
_MOD_KWARGS = [k for k in SHARED_MOD_KWS if k.name not in {'name_prefix', 'name_suffix'}]
class Python3Module(ExtensionModule):
INFO = ModuleInfo('python3', '0.38.0', deprecated='0.48.0')
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.methods.update({
'extension_module': self.extension_module,
'find_python': self.find_python,
'language_version': self.language_version,
'sysconfig_path': self.sysconfig_path,
})
@permittedKwargs(known_shmod_kwargs - {'name_prefix', 'name_suffix'})
@typed_pos_args('python3.extension_module', str, varargs=(str, mesonlib.File, CustomTarget, CustomTargetIndex, GeneratedList, StructuredSources, ExtractedObjects, BuildTarget))
@typed_kwargs('python3.extension_module', *_MOD_KWARGS, allow_unknown=True)
def extension_module(self, state: ModuleState, args: T.Tuple[str, T.List[BuildTargetSource]], kwargs: SharedModuleKW):
host_system = state.environment.machines.host.system
if host_system == 'darwin':
# Default suffix is 'dylib' but Python does not use it for extensions.
suffix = 'so'
elif host_system == 'windows':
# On Windows the extension is pyd for some unexplainable reason.
suffix = 'pyd'
else:
suffix = []
kwargs['name_prefix'] = ''
kwargs['name_suffix'] = suffix
return self.interpreter.build_target(state.current_node, args, kwargs, SharedModule)
@noPosargs
@noKwargs
def find_python(self, state, args, kwargs):
command = state.environment.lookup_binary_entry(mesonlib.MachineChoice.HOST, 'python3')
if command is not None:
py3 = ExternalProgram.from_entry('python3', command)
else:
py3 = ExternalProgram('python3', mesonlib.python_command, silent=True)
return py3
@noPosargs
@noKwargs
def language_version(self, state, args, kwargs):
return sysconfig.get_python_version()
@noKwargs
@typed_pos_args('python3.sysconfig_path', str)
def sysconfig_path(self, state, args, kwargs):
path_name = args[0]
valid_names = sysconfig.get_path_names()
if path_name not in valid_names:
raise mesonlib.MesonException(f'{path_name} is not a valid path name {valid_names}.')
# Get a relative path without a prefix, e.g. lib/python3.6/site-packages
return sysconfig.get_path(path_name, vars={'base': '', 'platbase': '', 'installed_base': ''})[1:]
def initialize(*args, **kwargs):
return Python3Module(*args, **kwargs)
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