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How to fix the Unbound module Graphics in an ocaml project

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From ~/pr/gitl/ocaml-gol In a constant effort to learn new programming languages, I'm currently trying to use ocaml , a free and open-source general-purpose, multi-paradigm programming language maintained at the Inria . It's basically an extension of Caml with object-oriented features. I'm mostly interested by its functionnal and pattern matching features but the module part of the language can be a bit difficult to understand for someone with little to none ML (Meta Language) background.   The error When trying to use the graphics module to create a graphical window and go just a little further than the simplest helloworld program, here is the result : If the project uses dune : (executable (name ocaml_project) (libraries lwt.unix graphics) ) with this code : let () = Printf.printf "Hello, world!\n";; Lwt_io.printf "Hello, world!\n";; Graphics.open_graph " 800x600";; The first times I built this project running the du
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How to use Qt5 ui form in C++ with cmake

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Qt is a cross-platform application framework and widget library written in C++. It is shiped with a form designer simply called designer which save the created mockup in XML format with the .ui extension. While Qt is generally used with Qt its own build called qmake and a project file, if you need external dependency checks and more control on the building process, you may want to use it with cmake .   The .ui form The .ui file contains the form definition. The simplest way to get one is to create it using the designer tool but this is plain XML so you can copy/paste it with a simple text editor as well. Let's call it form.ui : <?xml version="1.0" encoding="UTF-8"?> <ui version="4.0"> <class>Form</class> <widget class="QWidget" name="Form"> <property name="geometry"> <rect> <x>0</x> <y>0</y> <width>400</width> &
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