1 files changed, 85 insertions, 0 deletions
diff --git a/mesonbuild/modules/python3.py b/mesonbuild/modules/python3.py
new file mode 100644
index 0000000..065e8d7
--- /dev/null
+++ b/mesonbuild/modules/python3.py
@@ -0,0 +1,85 @@
+# 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.
+from __future__ import annotations
+
+import sysconfig
+from .. import mesonlib
+
+from . import ExtensionModule, ModuleInfo
+from ..interpreterbase import typed_pos_args, noPosargs, noKwargs, permittedKwargs
+from ..build import known_shmod_kwargs
+from ..programs import ExternalProgram
+
+
+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)
+    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)
+
+    @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)