If you want to do graphical applications with SDL2 on a rapsberry pi +without the overhead of X11, you will need to compile SDL2 yourself. I'll +assume you are running raspian.
+ +Install required libraries to build
+ +sudo apt-get install libdrm-dev libgdm-dev+ +
Next download a SDL2 source tarball. They can be found here. +Next, change to the directory of the unzipped tarball and run the following.
+ +./configure --enable-video=kmsdrm + make -j4 + sudo make install ++ +
To check if the library was compiled sucessfully, compile this +piece of code. You should see the screen flashing, as well as your desired +graphics driver on stdout. To compile,
+ +g++ ./test_prog.cpp `pkg-config --cflags --libs sdl2` ++ +
You can change the driver used via raspi-config if opengl es is not +desired.
+ +I hope this helped someone, happy embedded programming!
+ +