fix the warning on Linux when OpenCL 1.2 not supported

diff --git a/modules/ocl/src/mcwutil.cpp b/modules/ocl/src/mcwutil.cpp
index 57ead2c..dfbf7b1 100644 (file)
--- a/modules/ocl/src/mcwutil.cpp
+++ b/modules/ocl/src/mcwutil.cpp
@@ -46,6 +46,9 @@
 #include "mcwutil.hpp"
 
 #if defined (HAVE_OPENCL)
+#ifndef CL_VERSION_1_2
+#define CL_VERSION_1_2 0
+#endif
 
 using namespace std;