diff --git a/BUILD.gn b/BUILD.gn
index d574aafe8cfe73c00a7ab501c28fef2e328c4355..0fd5474356e990d498f6eb1ebf9d418683ecd2e0 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -89,6 +89,9 @@ ohos_executable("hdc_std") {
     "HDC_HOST",
     "HARMONY_PROJECT",
   ]
+  if (is_mac) {
+    defines += [ "HOST_MAC" ]
+  }
   cflags_cc = [
     "-Wno-error",
     "-Wno-error=unused-variable",
diff --git a/src/common/serial_struct_define.h b/src/common/serial_struct_define.h
index a17dfc6e6f4df76fe1a7e170dbd0b7c5836b0946..9d5eae31d6b2ff91e30ee03633a768b4c9578de6 100644
--- a/src/common/serial_struct_define.h
+++ b/src/common/serial_struct_define.h
@@ -307,6 +307,13 @@ namespace SerialStruct {
             }
         }
 
+#if defined(HOST_MAC)
+        static void WriteVarint(unsigned long value, Writer &out)
+        {
+            WriteVarint((uint64_t)value, out);
+        }
+#endif
+
         static bool ReadVarint(uint32_t &value, reader &in)
         {
             value = 0;
@@ -340,6 +347,13 @@ namespace SerialStruct {
             return false;
         }
 
+#if defined(HOST_MAC)
+        static bool ReadVarint(unsigned long &value, reader &in)
+        {
+            return ReadVarint(value, in);
+        }
+#endif
+
         static void WriteFixed(uint32_t value, Writer &out)
         {
 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__