Merge remote-tracking branch 'upstream/3.4' into merge-3.4

diff --cc CMakeLists.txt
Simple merge

diff --cc cmake/OpenCVCompilerOptions.cmake
Simple merge

diff --cc cmake/OpenCVDetectCUDA.cmake
index 8846e6b,2586a53..9696861
--- 1/cmake/OpenCVDetectCUDA.cmake
--- 2/cmake/OpenCVDetectCUDA.cmake
+++ b/cmake/OpenCVDetectCUDA.cmake
@@@ -417,53 -375,11 +417,60 @@@ if(HAVE_CUDA
      set(CUDA_cufft_LIBRARY_ABS ${CUDA_cufft_LIBRARY})
      ocv_convert_to_lib_name(CUDA_cufft_LIBRARY ${CUDA_cufft_LIBRARY})
    endif()
+ 
+   if(CMAKE_GENERATOR MATCHES "Visual Studio"
+       AND NOT OPENCV_SKIP_CUDA_CMAKE_SUPPRESS_REGENERATION
+   )
+     message(WARNING "CUDA with MSVS generator is detected. Disabling CMake re-run checks (CMAKE_SUPPRESS_REGENERATION=ON). You need to run CMake manually if updates are required.")
+     set(CMAKE_SUPPRESS_REGENERATION ON)
+   endif()
  endif()
 +
 +
 +# ----------------------------------------------------------------------------
 +# Add CUDA libraries (needed for apps/tools, samples)
 +# ----------------------------------------------------------------------------
 +if(HAVE_CUDA)
 +  # details: https://github.com/NVIDIA/nvidia-docker/issues/775
 +  if(" ${CUDA_CUDA_LIBRARY}" MATCHES "/stubs/libcuda.so" AND NOT OPENCV_SKIP_CUDA_STUB_WORKAROUND)
 +    set(CUDA_STUB_ENABLED_LINK_WORKAROUND 1)
 +    if(EXISTS "${CUDA_CUDA_LIBRARY}" AND NOT OPENCV_SKIP_CUDA_STUB_WORKAROUND_RPATH_LINK)
 +      set(CUDA_STUB_TARGET_PATH "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/")
 +      execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${CUDA_CUDA_LIBRARY}" "${CUDA_STUB_TARGET_PATH}/libcuda.so.1"
 +          RESULT_VARIABLE CUDA_STUB_SYMLINK_RESULT)
 +      if(NOT CUDA_STUB_SYMLINK_RESULT EQUAL 0)
 +        execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${CUDA_CUDA_LIBRARY}" "${CUDA_STUB_TARGET_PATH}/libcuda.so.1"
 +          RESULT_VARIABLE CUDA_STUB_COPY_RESULT)
 +        if(NOT CUDA_STUB_COPY_RESULT EQUAL 0)
 +          set(CUDA_STUB_ENABLED_LINK_WORKAROUND 0)
 +        endif()
 +      endif()
 +      if(CUDA_STUB_ENABLED_LINK_WORKAROUND)
 +        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath-link,\"${CUDA_STUB_TARGET_PATH}\"")
 +      endif()
 +    else()
 +      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--allow-shlib-undefined")
 +    endif()
 +    if(NOT CUDA_STUB_ENABLED_LINK_WORKAROUND)
 +      message(WARNING "CUDA: workaround for stubs/libcuda.so.1 is not applied")
 +    endif()
 +  endif()
 +
 +  set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDA_LIBRARIES} ${CUDA_npp_LIBRARY})
 +  if(HAVE_CUBLAS)
 +    set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDA_cublas_LIBRARY})
 +  endif()
 +  if(HAVE_CUDNN)
 +    set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDNN_LIBRARIES})
 +  endif()
 +  if(HAVE_CUFFT)
 +    set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CUDA_cufft_LIBRARY})
 +  endif()
 +  foreach(p ${CUDA_LIBS_PATH})
 +    if(MSVC AND CMAKE_GENERATOR MATCHES "Ninja|JOM")
 +      set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CMAKE_LIBRARY_PATH_FLAG}"${p}")
 +    else()
 +      set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} ${CMAKE_LIBRARY_PATH_FLAG}${p})
 +    endif()
 +  endforeach()
 +endif()

diff --cc modules/dnn/src/layers/reorg_layer.cpp
index f8f7bc6,6961243..da1c61a
--- 1/modules/dnn/src/layers/reorg_layer.cpp
--- 2/modules/dnn/src/layers/reorg_layer.cpp
+++ b/modules/dnn/src/layers/reorg_layer.cpp
@@@ -53,18 -59,6 +59,12 @@@
  #endif
  #endif
  
- #include <opencv2/dnn/shape_utils.hpp>
- #include <opencv2/dnn/all_layers.hpp>
- 
- #ifdef HAVE_OPENCL
- #include "opencl_kernels_dnn.hpp"
- #endif
- 
++#include "../op_cuda.hpp"
 +#ifdef HAVE_CUDA
 +#include "../cuda4dnn/primitives/reorg.hpp"
 +using namespace cv::dnn::cuda4dnn;
 +#endif
 +
  namespace cv
  {
  namespace dnn

diff --cc modules/dnn/src/layers/slice_layer.cpp
Simple merge

diff --cc modules/dnn/test/test_common.impl.hpp
Simple merge

diff --cc modules/dnn/test/test_darknet_importer.cpp
Simple merge

diff --cc modules/flann/include/opencv2/flann/lsh_index.h
Simple merge

diff --cc modules/flann/src/miniflann.cpp
Simple merge

diff --cc modules/imgcodecs/include/opencv2/imgcodecs.hpp
Simple merge

diff --cc modules/imgcodecs/test/test_read_write.cpp
Simple merge

diff --cc modules/imgproc/include/opencv2/imgproc.hpp
Simple merge