fixes for gpu module:

- fixed printCudaDeviceInfo for new CC
- fixed some compilation errors and warnings
- removed unset command from CMake script
- removed unused std imports

modules/gpu/src/nvidia/core/NCV.cu

@@ -45,8 +45,6 @@
 #include <vector>
 #include "NCV.hpp"
 
-using namespace std;
-
 
 //==============================================================================
 //
@@ -55,16 +53,16 @@ using namespace std;
 //==============================================================================
 
 
-static void stdDebugOutput(const string &msg)
+static void stdDebugOutput(const std::string &msg)
 {
-    cout << msg;
+    std::cout << msg;
 }
 
 
 static NCVDebugOutputHandler *debugOutputHandler = stdDebugOutput;
 
 
-void ncvDebugOutput(const string &msg)
+void ncvDebugOutput(const std::string &msg)
 {
     debugOutputHandler(msg);
 }

modules/gpu/src/nvidia/core/NCV.hpp

@@ -288,7 +288,7 @@ NCV_EXPORTS void ncvSetDebugOutputHandler(NCVDebugOutputHandler* func);
     do \
     { \
         cudaError_t res = cudacall; \
-        ncvAssertPrintReturn(cudaSuccess==res, "cudaError_t=" << res, errCode); \
+        ncvAssertPrintReturn(cudaSuccess==res, "cudaError_t=" << (int)res, errCode); \
     } while (0)
 
 
@@ -296,7 +296,7 @@ NCV_EXPORTS void ncvSetDebugOutputHandler(NCVDebugOutputHandler* func);
     do \
     { \
         cudaError_t res = cudaGetLastError(); \
-        ncvAssertPrintReturn(cudaSuccess==res, "cudaError_t=" << res, errCode); \
+        ncvAssertPrintReturn(cudaSuccess==res, "cudaError_t=" << (int)res, errCode); \
     } while (0)