Fixes for QNX 6.6 Neitrino support.

modules/core/include/opencv2/core/operations.hpp

@@ -3750,8 +3750,15 @@ template<typename _Tp> inline ptrdiff_t operator - (const SeqIterator<_Tp>& a,
                                                     const SeqIterator<_Tp>& b)
 {
     ptrdiff_t delta = a.index - b.index, n = a.seq->total;
+#if defined(__QNX__)
+    // No long std::abs(long) in QNX
+    long absdelta = (delta < 0) ? -delta : delta;
+    if( absdelta > n )
+#else
     if( std::abs(static_cast<long>(delta)) > n )
+#endif
         delta += delta < 0 ? n : -n;
+
     return delta;
 }
 

modules/core/src/system.cpp

@@ -157,7 +157,7 @@ std::wstring GetTempFileNameWinRT(std::wstring prefix)
 
 #include <stdarg.h>
 
-#if defined __linux__ || defined __APPLE__ || defined __EMSCRIPTEN__
+#if defined __linux__ || defined __APPLE__ || defined __EMSCRIPTEN__ || defined __QNX__
 #include <unistd.h>
 #include <stdio.h>
 #include <sys/types.h>