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# Copyright 2016-2017 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sysconfig
from .. import mesonlib
from . import ExtensionModule
from ..interpreterbase import noKwargs, permittedKwargs, FeatureDeprecated, FeatureNew
from ..build import known_shmod_kwargs
from ..programs import ExternalProgram
class Python3Module(ExtensionModule):
@FeatureNew('python3 module', '0.38.0')
@FeatureDeprecated('python3 module', '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)
def extension_module(self, state, args, kwargs):
if 'name_prefix' in kwargs:
raise mesonlib.MesonException('Name_prefix is set automatically, specifying it is forbidden.')
if 'name_suffix' in kwargs:
raise mesonlib.MesonException('Name_suffix is set automatically, specifying it is forbidden.')
host_system = state.host_machine.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.func_shared_module(None, args, kwargs)
@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
@noKwargs
def language_version(self, state, args, kwargs):
return sysconfig.get_python_version()
@noKwargs
def sysconfig_path(self, state, args, kwargs):
if len(args) != 1:
raise mesonlib.MesonException('sysconfig_path() requires passing the name of path to get.')
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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