--- /dev/null
+#ifndef CEPH_ARCH_ARM_H
+#define CEPH_ARCH_ARM_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int ceph_arch_neon; /* true if we have ARM NEON or ASIMD abilities */
+extern int ceph_arch_aarch64_crc32; /* true if we have AArch64 CRC32/CRC32C abilities */
+
+extern int ceph_arch_arm_probe(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif