The commands I used to install SDL version 2.32.8 from the source archive on my Debian Linux system.
./configure –prefix=/usr make sudo make install
Sources I read
Linux and other UNIX systems: * Run ‘./configure; make; make install’
https://wiki.libsdl.org/SDL2/Installation
At first I forgot to specify the /usr prefix. I messed up my system and nothing was compiling because the default /usr/local was where the new install was whereas all the other libraries were installed in subdirectories of /usr.
Therefore I had to repead the command and then remove the sdl2-config file from the /usr/local/bin directory.
Then everything compiled as before, even my Tetris game and my new LGBT font library.
Technically I did not need the latest SDL2 version available but I wanted to learn how to install updates from source rather than only relying on the Debian repositories.
This is because I am considering making my own Linux distribution.
Please leave me any comments or questions you have! I will update posts if necessary based on user feedback!