IPP_VERSION_X100 was changed to:

IPP_VERSION_MAJOR * 100 + IPP_VERSION_MINOR*10 + IPP_VERSION_UPDATE
to manage changes between updates more easily.

IPP_DISABLE_BLOCK was added to ease tracking of disabled IPP functions;

modules/core/src/dxt.cpp

@@ -54,7 +54,7 @@ namespace cv
 # pragma warning(disable: 4748)
 #endif
 
-#if IPP_VERSION_X100 >= 701
+#if IPP_VERSION_X100 >= 710
 #define USE_IPP_DFT 1
 #else
 #undef USE_IPP_DFT