Python: Add 'limited_api' kwarg to extension_module

This commit adds a new keyword arg to extension_module() that enables
a user to target the Python Limited API, declaring the version of the
limited API that they wish to target.

Two new unittests have been added to test this functionality.

2 files changed, 27 insertions, 0 deletions

diff --git a/test cases/python/10 extmodule limited api disabled/meson.build b/test cases/python/10 extmodule limited api disabled/meson.build
new file mode 100644
index 000000000..42cd6186c
--- /dev/null
+++ b/test cases/python/10 extmodule limited api disabled/meson.build
@@ -0,0 +1,10 @@
+project('Python limited api disabled', 'c',
+  default_options : ['buildtype=release', 'werror=true', 'python.allow_limited_api=false'])
+
+py_mod = import('python')
+py = py_mod.find_installation()
+
+module = py.extension_module('my_module',
+  'module.c',
+  limited_api: '3.7',
+)
diff --git a/test cases/python/10 extmodule limited api disabled/module.c b/test cases/python/10 extmodule limited api disabled/module.c
new file mode 100644
index 000000000..a5d3a87ab
--- /dev/null
+++ b/test cases/python/10 extmodule limited api disabled/module.c
@@ -0,0 +1,17 @@
+#include <Python.h>
+
+#if defined(Py_LIMITED_API)
+#error "Py_LIMITED_API's definition by Meson should have been disabled."
+#endif
+
+static struct PyModuleDef my_module = {
+   PyModuleDef_HEAD_INIT,
+   "my_module",
+   NULL,
+   -1,
+   NULL
+};
+
+PyMODINIT_FUNC PyInit_my_module(void) {
+    return PyModule_Create(&my_module);
+}