Add main_input_filename

We definitely want to know the filename we are compiling.

Signed-off-by: Yihao Wu <[email protected]>

Author: Yihao Wu

gcc-python.c

@@ -371,6 +371,12 @@ PyGcc_dump(PyObject *self, PyObject *arg)
     Py_RETURN_NONE;
 }
 
+static PyObject *
+PyGcc_get_main_input_filename(PyObject *self, PyObject *args)
+{
+	return PyGccStringOrNone(main_input_filename);
+}
+
 static PyObject *
 PyGcc_get_dump_file_name(PyObject *self, PyObject *noargs)
 {
@@ -494,6 +500,9 @@ static PyMethodDef GccMethods[] = {
     {"get_callgraph_nodes", PyGcc_get_callgraph_nodes, METH_VARARGS,
      "Get a list of all gcc.CallgraphNode instances"},
 
+    {"get_main_input_filename", PyGcc_get_main_input_filename, METH_NOARGS,
+     "Get main_input_filename"},
+
     /* Dump files */
     {"dump", PyGcc_dump, METH_O,
      "Dump str() of the argument to the current dump file (or silently discard it when no dump file is open)"},