--- /dev/null
+#ifndef CEPH_ARCH_PROBE_H
+#define CEPH_ARCH_PROBE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int ceph_arch_probed; /* non-zero if we've probed features */
+
+extern int ceph_arch_probe(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif