bpo-36722: Debug build loads libraries built in release mode (GH-12952)
In debug build, import now also looks for C extensions compiled in
release mode and for C extensions compiled in the stable ABI.
diff --git a/Python/dynload_shlib.c b/Python/dynload_shlib.c
index e5bddaa..c51f97a 100644
--- a/Python/dynload_shlib.c
+++ b/Python/dynload_shlib.c
@@ -38,9 +38,10 @@
".dll",
#else /* !__CYGWIN__ */
"." SOABI ".so",
-#ifndef Py_DEBUG
+#ifdef ALT_SOABI
+ "." ALT_SOABI ".so",
+#endif
".abi" PYTHON_ABI_STRING ".so",
-#endif /* ! Py_DEBUG */
".so",
#endif /* __CYGWIN__ */
NULL,