Update CMakeLists.txt

CMakeLists.txt

@@ -651,6 +651,8 @@ if(UNIX)
       set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} m pthread)
     elseif(EMSCRIPTEN)
       # no need to link to system libs with emscripten
+    elseif(QNXNTO)
+      # no need to link to system libs with QNX
     else()
       set(OPENCV_LINKER_LIBS ${OPENCV_LINKER_LIBS} dl m pthread rt)
     endif()