From 8bb73826e791a222e7cbf5582886e730ae6a9761 Mon Sep 17 00:00:00 2001
From: Julien Schueller <schueller@phimeca.com>
Date: Fri, 15 Mar 2024 09:38:30 +0100
Subject: [PATCH] Python: Allow for stable abi

---
 src/swig/nlopt-python.i | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/src/swig/nlopt-python.i b/src/swig/nlopt-python.i
index c0f66476..41531faa 100644
--- a/src/swig/nlopt-python.i
+++ b/src/swig/nlopt-python.i
@@ -4,6 +4,7 @@
 // Converting NLopt/C++ exceptions to Python exceptions
 
 %{
+#ifndef Py_LIMITED_API
 
 #define ExceptionSubclass(EXCNAME, EXCDOC)				\
   static PyTypeObject MyExc_ ## EXCNAME = {				\
@@ -28,16 +29,23 @@ ExceptionSubclass(ForcedStop,
 ExceptionSubclass(RoundoffLimited,
 		  "Python version of nlopt::roundoff_limited exception.")
 
+#endif
 %}
 
 %init %{
+#ifndef Py_LIMITED_API
   init_ForcedStop(m);
   init_RoundoffLimited(m);
+#endif
 %}
 %pythoncode %{
-  ForcedStop = _nlopt.ForcedStop
-  RoundoffLimited = _nlopt.RoundoffLimited
-  __version__ = str(_nlopt.version_major())+'.'+str(_nlopt.version_minor())+'.'+str(_nlopt.version_bugfix())
+try:
+    ForcedStop = _nlopt.ForcedStop
+    RoundoffLimited = _nlopt.RoundoffLimited
+except AttributeError:
+    ForcedStop = RuntimeError
+    RoundoffLimited = RuntimeError
+__version__ = str(_nlopt.version_major())+'.'+str(_nlopt.version_minor())+'.'+str(_nlopt.version_bugfix())
 %}
 
 %typemap(throws) std::bad_alloc %{
@@ -47,12 +55,21 @@ ExceptionSubclass(RoundoffLimited,
 
 %typemap(throws) nlopt::forced_stop %{
   if (!PyErr_Occurred())
+#ifndef Py_LIMITED_API
     PyErr_SetString((PyObject*)&MyExc_ForcedStop, "NLopt forced stop");
+#else
+    PyErr_SetString(PyExc_RuntimeError, "NLopt forced stop");
+#endif
   SWIG_fail;
 %}
 
 %typemap(throws) nlopt::roundoff_limited %{
-  PyErr_SetString((PyObject*)&MyExc_RoundoffLimited, "NLopt roundoff-limited");
+  if (!PyErr_Occurred())
+#ifndef Py_LIMITED_API
+    PyErr_SetString((PyObject*)&MyExc_RoundoffLimited, "NLopt roundoff-limited");
+#else
+    PyErr_SetString(PyExc_RuntimeError, "NLopt roundoff-limited");
+#endif
   SWIG_fail;
 %}