Cmake problem

[texus]

Same thing: "Could not find UDev library".
Typical format in ubuntu is libXXX-dev, so again it is just "sudo apt-get install libudev-dev".

Edit: You might get errors for the other dependencies too:
    pthread
    opengl
    xlib
    xrandr
    freetype
    glew
    jpeg
    sndfile
    openal

You can look up the package name by searching for them on https://packages.ubuntu.com/, but like I said it is mostly called libXXX-dev.

[Law]

Yes I had to install a few packages, but I managed to find and install them all eventually.

Then I entered all the instructions you listed and they went fine (for both SFML and TGUI). I now have them both installed on my computer. I compiled a file of mine and it compiled with no error, just as usual. So I think my problem is solved.

Thanks a lot! I'm going to bed now^^ I should hope no problem will appear tomorrow