Index: trunk/Mars/cmake/rootlogon.C.in
===================================================================
--- trunk/Mars/cmake/rootlogon.C.in	(revision 19324)
+++ trunk/Mars/cmake/rootlogon.C.in	(revision 19326)
@@ -43,4 +43,8 @@
 ///////////////////////////////////////////////////////////////////////////
 #include <iomanip>
+
+#if ROOT_VERSION_CODE != ROOT_VERSION(${ROOT_VERSION_MAJOR},${ROOT_VERSION_MINOR},${ROOT_VERSION_PATCH})
+#error Started ROOT version does not match ROOT version linked with libmars.so
+#endif
 
 #if defined (R__ADD_LIBRARY_PATH) && defined (R__LOAD_LIBRARY)