Gotta #include <memory> and <functional>

[dllu]

The code presently fails to compile with g++ 8.3.0 because it uses, for exmaple, std::shared_ptr from #include <memory> and std::function from #include <functional> but does not include either of the two.

For example, here is the first error message:

In file included from /home/dllu/proj/apolloscape-sfm/src/shader.cpp:9:
/home/dllu/proj/apolloscape-sfm/include/cv_gl/shader.h:49:55: error: ‘shared_ptr’ in namespace ‘std’ does not name a template type
 std::ostream& operator<<(std::ostream &os, const std::shared_ptr<Shader>& shader);
                                                       ^~~~~~~~~~
/home/dllu/proj/apolloscape-sfm/include/cv_gl/shader.h:49:50: note: ‘std::shared_ptr’ is defined in header ‘<memory>’; did you forget to ‘#include <memory>’?

It seems we need to add #include <memory> at the top of shader.h and #include <functional> at the top of gl_window.h.

[bexcite]

Thanks for catching this, my "magic machine" still works:) I've added this two deps but haven't tested it for g++ 8.3.0. Definitely, there are some hidden dependencies problem that didn't pop up on my Mac OS Clang setup. Hope you've been able to compile it.