Build fix.

modules/core/cuda/main.cpp

@@ -25,6 +25,8 @@ using namespace std;
 using namespace cv;
 using namespace cv::gpu;
 
+#define throw_nogpu CV_Error(CV_GpuNotSupported, "The library is compiled without CUDA support")
+
 #include "gpumat_cuda.hpp"
 
 #ifdef HAVE_CUDA

modules/core/include/opencv2/core/gpumat.hpp

@@ -48,8 +48,6 @@
 #include "opencv2/core/core.hpp"
 #include "opencv2/core/cuda_devptrs.hpp"
 
-#define throw_nogpu CV_Error(CV_GpuNotSupported, "The library is compiled without CUDA support")
-
 namespace cv { namespace gpu
 {
     //////////////////////////////// Initialization & Info ////////////////////////

modules/core/src/gpumat.cpp

@@ -65,6 +65,8 @@ using namespace std;
 using namespace cv;
 using namespace cv::gpu;
 
+#define throw_nogpu CV_Error(CV_GpuNotSupported, "The library is compiled without CUDA support")
+
 #include "gpumat_cuda.hpp"
 
 typedef GpuFuncTable* (*GpuFactoryType)();