Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork.
A pthread_atfork() child handler is used to seeded the PRNG with pid, time
and some stack data.
diff --git a/configure b/configure
index a1b7bff..9bffbf3 100755
--- a/configure
+++ b/configure
@@ -9794,6 +9794,17 @@
fi
done
+ for ac_func in pthread_atfork
+do :
+ ac_fn_c_check_func "$LINENO" "pthread_atfork" "ac_cv_func_pthread_atfork"
+if test "x$ac_cv_func_pthread_atfork" = xyes; then :
+ cat >>confdefs.h <<_ACEOF
+#define HAVE_PTHREAD_ATFORK 1
+_ACEOF
+
+fi
+done
+
fi