build: added DEBUG build guard

To prevent linkage of binary incompatible DEBUG/RELEASE binaries/runtimes

modules/core/include/opencv2/core/cvdef.h

@@ -48,6 +48,23 @@
 //! @addtogroup core_utils
 //! @{
 
+#if !defined CV_DOXYGEN && !defined CV_IGNORE_DEBUG_BUILD_GUARD
+#if (defined(_MSC_VER) && (defined(DEBUG) || defined(_DEBUG))) || \
+    (defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_DEBUG_PEDANTIC))
+// Guard to prevent using of binary incompatible binaries / runtimes
+// https://github.com/opencv/opencv/pull/9161
+#define CV__DEBUG_NS_BEGIN namespace debug_build_guard {
+#define CV__DEBUG_NS_END }
+namespace cv { namespace debug_build_guard { } using namespace debug_build_guard; }
+#endif
+#endif
+
+#ifndef CV__DEBUG_NS_BEGIN
+#define CV__DEBUG_NS_BEGIN
+#define CV__DEBUG_NS_END
+#endif
+
+
 #ifdef __OPENCV_BUILD
 #include "cvconfig.h"
 #endif

modules/core/include/opencv2/core/mat.hpp

@@ -62,6 +62,8 @@ namespace cv
 enum { ACCESS_READ=1<<24, ACCESS_WRITE=1<<25,
     ACCESS_RW=3<<24, ACCESS_MASK=ACCESS_RW, ACCESS_FAST=1<<26 };
 
+CV__DEBUG_NS_BEGIN
+
 class CV_EXPORTS _OutputArray;
 
 //////////////////////// Input/Output Array Arguments /////////////////////////////////
@@ -400,6 +402,8 @@ public:
 
 };
 
+CV__DEBUG_NS_END
+
 typedef const _InputArray& InputArray;
 typedef InputArray InputArrayOfArrays;
 typedef const _OutputArray& OutputArray;

modules/core/include/opencv2/core/mat.inl.hpp

@@ -56,6 +56,8 @@
 
 namespace cv
 {
+CV__DEBUG_NS_BEGIN
+
 
 //! @cond IGNORED
 
@@ -392,6 +394,8 @@ inline _InputOutputArray::_InputOutputArray(const ogl::Buffer& buf)
 inline _InputOutputArray::_InputOutputArray(const cuda::HostMem& cuda_mem)
 { init(FIXED_TYPE + FIXED_SIZE + CUDA_HOST_MEM + ACCESS_RW, &cuda_mem); }
 
+CV__DEBUG_NS_END
+
 //////////////////////////////////////////// Mat //////////////////////////////////////////
 
 inline