change build system to CMake and use SDL3 for everything

libs/SDL3/docs/README-ps2.md

@@ -0,0 +1,47 @@
+PS2
+======
+SDL port for the Sony Playstation 2 contributed by:
+- Francisco Javier Trujillo Mata
+
+
+Credit to
+   - The guys that ported SDL to PSP & Vita because I'm taking them as reference.
+   - David G. F. for helping me with several issues and tests.
+
+## Building
+To build SDL library for the PS2, make sure you have the latest PS2Dev status and run:
+```bash
+cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=$PS2DEV/ps2sdk/ps2dev.cmake
+cmake --build build
+cmake --install build
+```
+
+## Notes
+If you trying to debug a SDL app through [ps2client](https://github.com/ps2dev/ps2client) you need to avoid the IOP reset, otherwise you will lose the connection with your computer.
+So to avoid the reset of the IOP CPU, you need to call to the macro `SDL_PS2_SKIP_IOP_RESET();`.
+It could be something similar as:
+```c
+.....
+
+SDL_PS2_SKIP_IOP_RESET();
+
+int main(int argc, char *argv[])
+{
+.....
+```
+For a release binary is recommendable to reset the IOP always.
+
+Remember to do a clean compilation every time you enable or disable the `SDL_PS2_SKIP_IOP_RESET` otherwise the change won't be reflected.
+
+## Getting PS2 Dev
+[Installing PS2 Dev](https://github.com/ps2dev/ps2dev)
+
+## Running on PCSX2 Emulator
+[PCSX2](https://github.com/PCSX2/pcsx2)
+
+[More PCSX2 information](https://pcsx2.net/)
+
+## To Do
+- PS2 Screen Keyboard
+- Dialogs
+- Others