[LU-19049] Build fix for new python/swig on Debian 13 (trixie)

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.17.0
• Severity: 3
• Assignee: Shaun Tancheff
• Reporter: Shaun Tancheff

Description

Update the config/ac_python_devel.m4 to handle distutils being removed.

Handle swig 4.3 api change, SWIG_Python_AppendOutput() takes a 3rd argument 'is_null'

SWIG_Python_AppendOutput(PyObject* result, PyObject* obj, int is_void) {

Check version and pass 0 if needed.

+#if SWIG_VERSION >= 0x040300     
+    $result = SWIG_Python_AppendOutput($result,obj,0);
+#else
     $result = SWIG_Python_AppendOutput($result,obj);
+#endif