Hi,
I have experienced that many users have problems to setup Thor correctly because the SFML path is not found. The recent modification to not copy FindSFML.cmake in the CMake module folder anymore makes matters even worse – not only because new users don't find SFML at all, but also because existing users are left with an incorrect FindSFML.cmake (defining SFMLDIR instead of SFML_ROOT for example).
What advice would you, Laurent, give for libraries depending on SFML? Should I copy FindSFML.cmake in my repository and expand CMAKE_MODULE_PATH correspondingly? Actually, that would be an easy solution, but I fear that I overlook updates in this file (but you mentioned they shouldn't happen too often).
Furthermore, to copy FindSFML.cmake to SFML_ROOT during the installation seems somehow questionable, because at this point one has already found SFML
But I see you can define the other variables like SFML_LIBRARIES etc.
By the way, you should probably mention those short steps to find SFML in another tutorial, like "Using SFML in other libraries with CMake"... One day, if you have time
