cmake now attempts to generate and compile a simple mex file at configure time and reports the working status of the generator and compiler, rather than just naively saying Matlab exists

modules/matlab/test/rand.hpp

@@ -0,0 +1,15 @@
+/* 
+ * a rather innocuous-looking function which is actually
+ * part of <cstdlib>, so we can be reasonably sure its
+ * definition will be found
+ */
+#ifndef __OPENCV_MATLAB_TEST_COMPILER_HPP_
+#define __OPENCV_MATLAB_TEST_COMPILER_HPP_
+
+namespace cv {
+
+CV_EXPORTS_W int rand( );
+
+};
+
+#endif

modules/matlab/test/test_compiler.cpp

@@ -1,5 +0,0 @@
-#include <mex.h>
-
-void mexFunction(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[]) {
-
-}