Merge pull request #787 from mesonbuild/py3module

Created a Python 3 module for simpler building of Python extension mo…

1 files changed, 49 insertions, 0 deletions

diff --git a/mesonbuild/modules/python3.py b/mesonbuild/modules/python3.py
new file mode 100644
index 0000000..53e28c4
--- /dev/null
+++ b/mesonbuild/modules/python3.py
@@ -0,0 +1,49 @@
+# 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 sys
+from .. import mesonlib, dependencies
+
+from . import ExtensionModule
+from mesonbuild.modules import ModuleReturnValue
+
+class Python3Module(ExtensionModule):
+    def __init__(self):
+        super().__init__()
+        self.snippets.add('extension_module')
+
+    def extension_module(self, interpreter, 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 interpreter.func_shared_module(None, args, kwargs)
+
+    def find_python(self, state, args, kwargs):
+        py3 = dependencies.ExternalProgram('python3', sys.executable, silent=True)
+        return ModuleReturnValue(py3, [py3])
+
+def initialize():
+    return Python3Module()