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# Copyright 2016-2017 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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import sysconfig
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from .. import mesonlib
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from . import ExtensionModule
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from ..interpreterbase import noKwargs, permittedKwargs, FeatureDeprecated, FeatureNew
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from ..build import known_shmod_kwargs
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from ..programs import ExternalProgram
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class Python3Module(ExtensionModule):
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@FeatureNew('python3 module', '0.38.0')
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@FeatureDeprecated('python3 module', '0.48.0')
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.methods.update({
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'extension_module': self.extension_module,
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'find_python': self.find_python,
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'language_version': self.language_version,
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'sysconfig_path': self.sysconfig_path,
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})
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@permittedKwargs(known_shmod_kwargs)
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def extension_module(self, state, args, kwargs):
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if 'name_prefix' in kwargs:
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raise mesonlib.MesonException('Name_prefix is set automatically, specifying it is forbidden.')
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if 'name_suffix' in kwargs:
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raise mesonlib.MesonException('Name_suffix is set automatically, specifying it is forbidden.')
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host_system = state.host_machine.system
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if host_system == 'darwin':
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# Default suffix is 'dylib' but Python does not use it for extensions.
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suffix = 'so'
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elif host_system == 'windows':
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# On Windows the extension is pyd for some unexplainable reason.
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suffix = 'pyd'
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else:
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suffix = []
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kwargs['name_prefix'] = ''
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kwargs['name_suffix'] = suffix
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return self.interpreter.func_shared_module(None, args, kwargs)
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@noKwargs
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def find_python(self, state, args, kwargs):
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command = state.environment.lookup_binary_entry(mesonlib.MachineChoice.HOST, 'python3')
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if command is not None:
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py3 = ExternalProgram.from_entry('python3', command)
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else:
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py3 = ExternalProgram('python3', mesonlib.python_command, silent=True)
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return py3
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@noKwargs
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def language_version(self, state, args, kwargs):
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return sysconfig.get_python_version()
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@noKwargs
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def sysconfig_path(self, state, args, kwargs):
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if len(args) != 1:
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raise mesonlib.MesonException('sysconfig_path() requires passing the name of path to get.')
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path_name = args[0]
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valid_names = sysconfig.get_path_names()
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if path_name not in valid_names:
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raise mesonlib.MesonException(f'{path_name} is not a valid path name {valid_names}.')
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# Get a relative path without a prefix, e.g. lib/python3.6/site-packages
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return sysconfig.get_path(path_name, vars={'base': '', 'platbase': '', 'installed_base': ''})[1:]
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def initialize(*args, **kwargs):
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return Python3Module(*args, **kwargs)
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