doc/snippets/compile_snippet.cpp.in

#include <Eigen/Core>
#include <Eigen/Array>
#include <Eigen/LU>
#include <Eigen/Cholesky>
#include <Eigen/Geometry>

using namespace Eigen;
using namespace std;

int main(int, char**)
{
  ${snippet_source_code}
  return 0;
}