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

cmake/OpenCVCompilerOptions.cmake

@@ -191,7 +191,6 @@ if(CV_GCC OR CV_CLANG)
 
   # Profiling?
   if(ENABLE_PROFILING)
-    add_extra_compiler_option("-pg -g")
     # turn off incompatible options
     foreach(flags CMAKE_CXX_FLAGS CMAKE_C_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_DEBUG
                   OPENCV_EXTRA_FLAGS_RELEASE OPENCV_EXTRA_FLAGS_DEBUG OPENCV_EXTRA_C_FLAGS OPENCV_EXTRA_CXX_FLAGS)
@@ -199,6 +198,9 @@ if(CV_GCC OR CV_CLANG)
       string(REPLACE "-ffunction-sections" "" ${flags} "${${flags}}")
       string(REPLACE "-fdata-sections" "" ${flags} "${${flags}}")
     endforeach()
+    # -pg should be placed both in the linker and in the compiler settings
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pg")
+    add_extra_compiler_option("-pg -g")
   else()
     if(MSVC)
       # TODO: Clang/C2 is not supported

cmake/OpenCVDetectCUDA.cmake

@@ -417,6 +417,13 @@ 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()
 
 

cmake/OpenCVFindOpenBLAS.cmake

@@ -46,6 +46,7 @@
 SET(Open_BLAS_INCLUDE_SEARCH_PATHS
   $ENV{OpenBLAS_HOME}
   $ENV{OpenBLAS_HOME}/include
+  $ENV{OpenBLAS_HOME}/include/openblas
   /opt/OpenBLAS/include
   /usr/local/include/openblas
   /usr/include/openblas
@@ -103,4 +104,4 @@ MARK_AS_ADVANCED(
     OpenBLAS_INCLUDE_DIR
     OpenBLAS_LIB
     OpenBLAS
-)
+)