message: Increased portability of CV_Func
diff: @@ -86,12 +86,24 @@ namespace cv { namespace debug_build_guard { } using namespace debug_build_guard
  #define __CV_VA_NUM_ARGS_HELPER(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N
  #define __CV_VA_NUM_ARGS(...) __CV_VA_NUM_ARGS_HELPER(__VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
  -#if defined __GNUC__
  +#ifdef CV_Func
  +// keep current value (through OpenCV port file)
  +#elif defined __GNUC__ || (defined (__cpluscplus) && (__cpluscplus >= 201103))
  +#define CV_Func __func__
  +#elif defined __clang__ && (__clang_minor__ * 100 + __clang_major >= 305)
  +#define CV_Func __func__
  +#elif defined(__STDC_VERSION__) && (__STDC_VERSION >= 199901)
  #define CV_Func __func__
  #elif defined _MSC_VER
  #define CV_Func __FUNCTION__
  +#elif defined(__INTEL_COMPILER) && (_INTEL_COMPILER >= 600)
  +#define CV_Func __FUNCTION__
  +#elif defined __IBMCPP__ && __IBMCPP__ >=500
  +#define CV_Func __FUNCTION__
  +#elif defined __BORLAND__ && (__BORLANDC__ >= 0x550)
  +#define CV_Func __FUNC__
  #else
  -#define CV_Func ""
  +#define CV_Func "<unknown>"
  #endif
  //! @cond IGNORED
  