#elif defined(__ARMEL__)
#define GOOGLE_PROTOBUF_ARCH_ARM 1
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
+#elif defined(__aarch64__)
+#define GOOGLE_PROTOBUF_ARCH_AARCH64 1
+#define GOOGLE_PROTOBUF_ARCH_64_BIT 1
#elif defined(__MIPSEL__)
#define GOOGLE_PROTOBUF_ARCH_MIPS 1
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1