SHA256: build only if OTA is enabled

Author: pennam

src/tls/utility/SHA256.cpp

@@ -21,6 +21,8 @@
 
 #include "SHA256.h"
 
+#if OTA_ENABLED
+
 /******************************************************************************
  * STATIC MEMBER DECLARATION
  ******************************************************************************/
@@ -58,3 +60,5 @@ void SHA256::finalize(uint8_t * hash)
   mbedtls_sha256_finish(&_ctx, hash);
 #endif
 }
+
+#endif /* OTA_ENABLED */

src/tls/utility/SHA256.h

@@ -23,6 +23,8 @@
  ******************************************************************************/
 #include <AIoTC_Config.h>
 
+#if OTA_ENABLED
+
 #if defined(BOARD_HAS_OFFLOADED_ECCX08) || defined(BOARD_HAS_ECCX08) || defined(BOARD_HAS_SOFTSE)
   #define HAS_BEARSSL
 #else
@@ -61,4 +63,6 @@ class SHA256
 
 };
 
+#endif /* OTA_ENABLED */
+
 #endif /* ARDUINO_TLS_UTILITY_SHA256_H_ */