1. Updated sniffer to allow DES3 to be disabled.

2. Fixed an unused variable in OpenSSL Extras when DES3 is disabled.
3. Force DES3 enabled when enabling MCAPI.

configure.ac

@@ -2873,6 +2873,9 @@ AS_IF([test "x$ENABLED_CMAC" = "xyes" && \
 # Update CFLAGS based on options                                               #
 ################################################################################
 
+AS_IF([test "x$ENABLED_MCAPI" = "xyes"],
+      [AS_IF([test "x$ENABLED_DES3" = "xno"],[ENABLED_DES3="yes"])])
+
 if test "$ENABLED_WOLFSCEP" = "yes"
 then
     # Enable prereqs if not already enabled

src/sniffer.c

@@ -1947,6 +1947,10 @@ static int Decrypt(SSL* ssl, byte* output, const byte* input, word32 sz)
 {
     int ret = 0;
 
+    (void)output;
+    (void)input;
+    (void)sz;
+
     switch (ssl->specs.bulk_cipher_algorithm) {
         #ifdef BUILD_ARC4
         case wolfssl_rc4:
@@ -2687,14 +2691,20 @@ static int FindNextRecordInAssembly(SnifferSession* session,
             return 0;
         }
         else if (ssl->specs.cipher_type == block) {
-            if (ssl->specs.bulk_cipher_algorithm == wolfssl_aes)
+            if (ssl->specs.bulk_cipher_algorithm == wolfssl_aes) {
+#ifdef BUILD_AES
                 wc_AesSetIV(ssl->decrypt.aes,
                             curr->data + curr->end - curr->begin
                                        - ssl->specs.block_size + 1);
-            else if (ssl->specs.bulk_cipher_algorithm == wolfssl_triple_des)
+#endif
+            }
+            else if (ssl->specs.bulk_cipher_algorithm == wolfssl_triple_des) {
+#ifdef BUILD_DES3
                 wc_Des3_SetIV(ssl->decrypt.des3,
                               curr->data + curr->end - curr->begin
                                          - ssl->specs.block_size + 1);
+#endif
+            }
         }
 
         Trace(DROPPING_LOST_FRAG_STR);

src/ssl.c

@@ -9814,6 +9814,7 @@ int wolfSSL_set_compression(WOLFSSL* ssl)
     {
         int ret = -1;  /* failure local, during function 0 means success
                           because internal functions work that way */
+        (void)key;
         (void)iv;
         (void)enc;