Add support for 64 bit QNX builds
diff --git a/src/google/protobuf/stubs/platform_macros.h b/src/google/protobuf/stubs/platform_macros.h
index ce1b1e3..2479960 100644
--- a/src/google/protobuf/stubs/platform_macros.h
+++ b/src/google/protobuf/stubs/platform_macros.h
@@ -46,7 +46,11 @@
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
#elif defined(__QNX__)
#define GOOGLE_PROTOBUF_ARCH_ARM_QNX 1
+#if defined(__aarch64__)
+#define GOOGLE_PROTOBUF_ARCH_64_BIT 1
+#else
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1
+#endif
#elif defined(_M_ARM) || defined(__ARMEL__)
#define GOOGLE_PROTOBUF_ARCH_ARM 1
#define GOOGLE_PROTOBUF_ARCH_32_BIT 1