1# Copyright 2016-2017 The Meson development team 2 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6 7# http://www.apache.org/licenses/LICENSE-2.0 8 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15import sysconfig 16from .. import mesonlib 17 18from . import ExtensionModule 19from ..interpreterbase import noKwargs, permittedKwargs, FeatureDeprecated 20from ..build import known_shmod_kwargs 21from ..programs import ExternalProgram 22 23 24class Python3Module(ExtensionModule): 25 @FeatureDeprecated('python3 module', '0.48.0') 26 def __init__(self, *args, **kwargs): 27 super().__init__(*args, **kwargs) 28 self.methods.update({ 29 'extension_module': self.extension_module, 30 'find_python': self.find_python, 31 'language_version': self.language_version, 32 'sysconfig_path': self.sysconfig_path, 33 }) 34 35 @permittedKwargs(known_shmod_kwargs) 36 def extension_module(self, state, args, kwargs): 37 if 'name_prefix' in kwargs: 38 raise mesonlib.MesonException('Name_prefix is set automatically, specifying it is forbidden.') 39 if 'name_suffix' in kwargs: 40 raise mesonlib.MesonException('Name_suffix is set automatically, specifying it is forbidden.') 41 host_system = state.host_machine.system 42 if host_system == 'darwin': 43 # Default suffix is 'dylib' but Python does not use it for extensions. 44 suffix = 'so' 45 elif host_system == 'windows': 46 # On Windows the extension is pyd for some unexplainable reason. 47 suffix = 'pyd' 48 else: 49 suffix = [] 50 kwargs['name_prefix'] = '' 51 kwargs['name_suffix'] = suffix 52 return self.interpreter.func_shared_module(None, args, kwargs) 53 54 @noKwargs 55 def find_python(self, state, args, kwargs): 56 command = state.environment.lookup_binary_entry(mesonlib.MachineChoice.HOST, 'python3') 57 if command is not None: 58 py3 = ExternalProgram.from_entry('python3', command) 59 else: 60 py3 = ExternalProgram('python3', mesonlib.python_command, silent=True) 61 return py3 62 63 @noKwargs 64 def language_version(self, state, args, kwargs): 65 return sysconfig.get_python_version() 66 67 @noKwargs 68 def sysconfig_path(self, state, args, kwargs): 69 if len(args) != 1: 70 raise mesonlib.MesonException('sysconfig_path() requires passing the name of path to get.') 71 path_name = args[0] 72 valid_names = sysconfig.get_path_names() 73 if path_name not in valid_names: 74 raise mesonlib.MesonException(f'{path_name} is not a valid path name {valid_names}.') 75 76 # Get a relative path without a prefix, e.g. lib/python3.6/site-packages 77 return sysconfig.get_path(path_name, vars={'base': '', 'platbase': '', 'installed_base': ''})[1:] 78 79 80def initialize(*args, **kwargs): 81 return Python3Module(*args, **kwargs) 82