Standard way to set defaults

configure.ac

@@ -3755,13 +3755,13 @@ then
 fi
 
 # ECC Minimum Key Size
-ENABLED_ECCMINSZ=224
 AC_ARG_WITH([eccminsz],
     [AS_HELP_STRING([--with-eccminsz=BITS],[Sets the ECC minimum key size (default: 224 bits)])],
     [
         ENABLED_ECCMINSZ=$withval
         AM_CFLAGS="$AM_CFLAGS -DECC_MIN_KEY_SZ=$withval"
-    ]
+    ],
+    [ ENABLED_ECCMINSZ=224 ]
 )
 
 # Compressed Key