MathGL | SVN repository at svn : //svn.code.sf.net/p/mathgl/code | Content Management System library

I try to make mathgl work, but the linker can't find the library. I installed it through the user repository from arch linux. I just copied the example program:

I am working on a simple opengl game to learn more about it. But for some reason when I try to rotate my cube over time it becomes stretched. You can see it in the photo:

I think it has to do with my model matrix but I'm not sure. Here is a portion of my code:

I wanted to program a custom OpenGL Widget inside a QML application to plot data with MathGL.
To do this i took a look at the Scene Graph example at http://doc.qt.io/qt-5/qtquick-scenegraph-openglunderqml-example.html
I then adapted the code to my needs and then the problem occurred, that the Image only flashes one rendercycle and after that doesn't appear anymore. Following are the important functions and bindings.

class GLRenderEngine : public QObject, public QOpenGLFunctions

I am trying to use MathGL in my project. When i go through the package contents i can only find .a static library files, how can i use those to include that library in my Visual Studio project?

I have tried to include all the .a files by going to Project Properties->Configuration Properties->Linker->Input

and link all the .a files using "additional dependencies". But then i still get a ton of errors when i include the mgl.h file.

I guess my question is: is the way to use a library in your program is to include the needed .a files? and if yes, what is the correct way to do it?

I am kind of new to C++ (used to be a Java developer, where this is way easier...) and I have to write an application, which has to plot some graphs and charts. To do so I want to use the MathGL library. And I learned, that I have to compile it myself in order to use it. So that's what I'm trying to do the last few days...

I am using Windows with MinGW and the CLion IDE. I started by extracting MathGL's source code into a folder and opening the folder with CLion. Then I downloaded the source codes of zlib and libpng and set the INCLUDE_DIR variables in the MathGL project to the respective folders and PNG_PNG_LIBRARY to png32. When I try to compile mgl_example via CLion it gives me the following error: