Arduino 1.8.19, Ubuntu 22/04, On compile: "fatal error: SDL/SDL.h: No such file"

[JamesNewton]

Describe the bug

Error message: "/home/jamesn/Arduino/libraries/GUIslice/src/GUIslice_drv_sdl.h:51:12: fatal error: SDL/SDL.h: No such file or directory #include <SDL/SDL.h>"

Arduino IDE 1.8.19 Ubuntu 22.04

Device hardware

• MCU: RasPi Pico
• Display with link: Adafruit ST7789 https://www.adafruit.com/product/3787
• GUIslice config selected: #include "../configs/rpi-sdl1-default-tslib.h"

Checklist to try first

Most display/touch issues can be identified by working through the steps in the Configuring GUIslice guide.

Please confirm whether:

• Display works correctly with standalone display driver library examples (eg. TFT_eSPI graphicstest, Adafruit graphicstest, etc.) without GUIslice: I don't think that matters, I can't get it to compile at all.
• Touch works correctly with standalone touch library examples without GUIslice: Again, it won't compile.

Expected behavior

The .ino file should compile.

Additional info

I've installed sdllib into the OS: apt-get install libsdl2-dev and restarted the IDE. I see no way to install SDL into the IDE. I believe I did the install correctly.

[JamesNewton]

Oh good grief. GUISlice doesn't even support the Pi Pico under Arduino IDE. It only supports the RasPi when running Linux. y'all have every other processor under Arduino IDE but not the Pico. My bad, the option I was selecting is for linux running on the RasPi, not for the IDE running on Linux programming a bare metal RasPi Pico. Silly me.