superbuild/modules/SDL2/INSTALL.txt

To compile and install SDL:

    1.  Windows with Visual Studio:
        * Read ./docs/README-visualc.md

        Windows with gcc, either native or cross-compiling:
        * Read the FAQ at https://wiki.libsdl.org/FAQWindows
        * Run './configure; make; make install'

        macOS with Xcode:
        * Read docs/README-macosx.md

        macOS from the command line:
        * Run './configure; make; make install'

        Linux and other UNIX systems:
        * Run './configure; make; make install'

        Android:
        * Read docs/README-android.md

        iOS:
        * Read docs/README-ios.md

        Using Cmake:
        * Read docs/README-cmake.md

    2.  Look at the example programs in ./test, and check out the online
        documentation at https://wiki.libsdl.org/

    3.  Join the SDL developer discussions, sign up on 
        https://discourse.libsdl.org/
        and go to the development forum
        https://discourse.libsdl.org/c/sdl-development/6

    4.  Sign up for the announcement list through the web interface:
        https://www.libsdl.org/mailing-list.php

That's it!
Sam Lantinga <slouken@libsdl.org>