now cmake takes snippets of code, completes them into compilable sources, builds them,
executes them and stores their output in files.
diff --git a/doc/snippets/function_dynBlock.cpp b/doc/snippets/function_dynBlock.cpp
index 7671574..5ca7655 100644
--- a/doc/snippets/function_dynBlock.cpp
+++ b/doc/snippets/function_dynBlock.cpp
@@ -1,10 +1,3 @@
-#include <Eigen/Core.h>
-USING_EIGEN_DATA_TYPES
-using namespace std;
-int main(int, char**)
-{
-    Matrix4d m = Matrix4d::identity();
-    m.dynBlock(2,0,2,2) = m.dynBlock(0,0,2,2);
-    cout << m << endl;
-    return 0;
-}
+Matrix4d m = Matrix4d::identity();
+m.dynBlock(2,0,2,2) = m.dynBlock(0,0,2,2);
+cout << m << endl;