diff --git a/arduino/libretuya/libraries/HTTPClient/HTTPClient.cpp b/arduino/libretuya/libraries/HTTPClient/HTTPClient.cpp
index 88adaf1..6fd8f24 100644
--- a/arduino/libretuya/libraries/HTTPClient/HTTPClient.cpp
+++ b/arduino/libretuya/libraries/HTTPClient/HTTPClient.cpp
@@ -25,6 +25,8 @@
  * Adapted in October 2018
  */
 
+#if LT_ARD_HAS_WIFI
+
 #include <Arduino.h>
 
 #ifdef HTTPCLIENT_1_1_COMPATIBLE
@@ -1623,3 +1625,5 @@ bool HTTPClient::generateCookieString(String *cookieString) {
 
 	return found;
 }
+
+#endif // LT_ARD_HAS_WIFI
diff --git a/arduino/libretuya/libraries/MD5/MD5PolarSSLImpl.cpp b/arduino/libretuya/libraries/MD5/MD5PolarSSLImpl.cpp
index fe5b032..b7265d5 100644
--- a/arduino/libretuya/libraries/MD5/MD5PolarSSLImpl.cpp
+++ b/arduino/libretuya/libraries/MD5/MD5PolarSSLImpl.cpp
@@ -1,5 +1,7 @@
 /* Copyright (c) Kuba Szczodrzyński 2022-06-03. */
 
+#if LT_ARD_HAS_MD5
+
 #include "MD5.h"
 
 #if LT_MD5_USE_POLARSSL
@@ -21,4 +23,6 @@ void MD5Final(unsigned char digest[16], LT_MD5_CTX_T *context) {
 
 } // extern "C"
 
-#endif
+#endif // LT_MD5_USE_POLARSSL
+
+#endif // LT_ARD_HAS_MD5
diff --git a/arduino/libretuya/libraries/NetUtils/ssl/MbedTLSClient.cpp b/arduino/libretuya/libraries/NetUtils/ssl/MbedTLSClient.cpp
index d1aeab2..6f270b4 100644
--- a/arduino/libretuya/libraries/NetUtils/ssl/MbedTLSClient.cpp
+++ b/arduino/libretuya/libraries/NetUtils/ssl/MbedTLSClient.cpp
@@ -1,5 +1,7 @@
 /* Copyright (c) Kuba Szczodrzyński 2022-04-30. */
 
+#if LT_ARD_HAS_WIFI && LT_HAS_MBEDTLS
+
 #include "MbedTLSClient.h"
 
 #include <IPAddress.h>
@@ -440,3 +442,5 @@ bool MbedTLSClient::getFingerprintSHA256(uint8_t result[32]) {
 	mbedtls_sha256_finish(&shaCtx, result);
 	return true;
 }
+
+#endif // LT_ARD_HAS_WIFI && LT_HAS_MBEDTLS
diff --git a/arduino/libretuya/libraries/WebServer/Parsing.cpp b/arduino/libretuya/libraries/WebServer/Parsing.cpp
index 1fc4a7e..df0d436 100644
--- a/arduino/libretuya/libraries/WebServer/Parsing.cpp
+++ b/arduino/libretuya/libraries/WebServer/Parsing.cpp
@@ -19,6 +19,8 @@
   Modified 8 May 2015 by Hristo Gochkov (proper post and file upload handling)
 */
 
+#if LT_ARD_HAS_WIFI
+
 #include <Arduino.h>
 
 #include "WebServer.h"
@@ -603,3 +605,5 @@ bool WebServer::_parseFormUploadAborted() {
 		_currentHandler->upload(*this, _currentUri, *_currentUpload);
 	return false;
 }
+
+#endif // LT_ARD_HAS_WIFI
diff --git a/arduino/libretuya/libraries/WebServer/WebServer.cpp b/arduino/libretuya/libraries/WebServer/WebServer.cpp
index 981f6ec..c881b47 100644
--- a/arduino/libretuya/libraries/WebServer/WebServer.cpp
+++ b/arduino/libretuya/libraries/WebServer/WebServer.cpp
@@ -20,6 +20,8 @@
   Modified 8 May 2015 by Hristo Gochkov (proper post and file upload handling)
 */
 
+#if LT_ARD_HAS_WIFI
+
 #include <Arduino.h>
 
 #include "FS.h"
@@ -715,3 +717,5 @@ String WebServer::_responseCodeToString(int code) {
 			return F("");
 	}
 }
+
+#endif // LT_ARD_HAS_WIFI
diff --git a/arduino/libretuya/libraries/WiFiMulti/WiFiMulti.cpp b/arduino/libretuya/libraries/WiFiMulti/WiFiMulti.cpp
index 48a8e95..1818d51 100644
--- a/arduino/libretuya/libraries/WiFiMulti/WiFiMulti.cpp
+++ b/arduino/libretuya/libraries/WiFiMulti/WiFiMulti.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#if LT_ARD_HAS_WIFI
+
 #include "WiFiMulti.h"
 #include <Arduino.h>
 #include <limits.h>
@@ -236,3 +238,5 @@ uint8_t WiFiMulti::run(uint32_t connectTimeout) {
 
 	return status;
 }
+
+#endif // LT_ARD_HAS_WIFI
diff --git a/builder/frameworks/realtek-ambz-arduino.py b/builder/frameworks/realtek-ambz-arduino.py
index 2bfdfc7..023f9ea 100644
--- a/builder/frameworks/realtek-ambz-arduino.py
+++ b/builder/frameworks/realtek-ambz-arduino.py
@@ -24,6 +24,9 @@ env.Append(
         # which conflicts with C++ built-in bool
         # so it's either -fpermissive or this:
         ("bool", "bool"),
+        # implemented features
+        ("LT_ARD_HAS_WIFI", "1"),
+        ("LT_ARD_HAS_MD5", "1"),
     ],
     LINKFLAGS=[
         "-Wl,--undefined=InfraStart",