Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
instead of reading /dev/urandom, to get pseudo-random bytes.
diff --git a/pyconfig.h.in b/pyconfig.h.in
index d623ceb..8107c3a 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -332,6 +332,9 @@
/* Define this if you have flockfile(), getc_unlocked(), and funlockfile() */
#undef HAVE_GETC_UNLOCKED
+/* Define to 1 if you have the `getentropy' function. */
+#undef HAVE_GETENTROPY
+
/* Define to 1 if you have the `getgrouplist' function. */
#undef HAVE_GETGROUPLIST