Issue #9344: Add os.getgrouplist().
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 6c45460..4935077 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -305,6 +305,9 @@
 /* Define this if you have flockfile(), getc_unlocked(), and funlockfile() */
 #undef HAVE_GETC_UNLOCKED
 
+/* Define to 1 if you have the `getgrouplist' function. */
+#undef HAVE_GETGROUPLIST
+
 /* Define to 1 if you have the `getgroups' function. */
 #undef HAVE_GETGROUPS