gouchi

It seems the source code for Arculator is [here](https://github.com/sarah-walker-pcem/arculator). You might contact them to see if they are interesting in adding [Libretro API](https://docs.libretro.com/development/cores/developing-cores) ?

@ChristopherEccleston2024 Please don't duplicate the [issue](https://github.com/libretro/RetroArch/issues/16505). > It seems the source code for Arculator is [here](https://github.com/sarah-walker-pcem/arculator). You might contact > them to see if they are interesting in adding >...

To make some test ``` git clone https://github.com/libretro/RetroArch.git cd RetroArch git fetch origin pull/16188/head:pr16188 git checkout pr16188 ./configure && make -j$(nproc) ```

> Linux x86 pipeline still failing. It seems that sensor API has been introduced in SDL [version 2.0.9](https://github.com/libsdl-org/SDL/releases/tag/release-2.0.9). And we are using [SDL 2.0.4](https://www.ubuntuupdates.org/package/core/xenial/universe/base/libsdl2-dev) for the CI as we are...

I confirm DS4 is working with `udev` driver. 1. Enable Auxiliary Sensor Input in Settings Tab > Input.  2. Select correct Sensor in Settings Tab > input > RetroPad...

It seems there is a macro [SDL_VERSION_ATLEAST](https://wiki.libsdl.org/SDL2/SDL_VERSION_ATLEAST) so we could use `SDL_VERSION_ATLEAST(2,0,9)`.

> but turns out SDL 2.0.9 released in 2018 so it isn't that old. I am confused the release date indicates May 24, 2022 ? [Source](https://github.com/libsdl-org/SDL/releases/tag/release-2.0.9)

I confirm it is still working with DS4 udev. [ds4-udev.txt.zip](https://github.com/user-attachments/files/16383126/ds4-udev.txt.zip) But for SDL2 driver it seems it did not find the sensor. I might have miss something. SDL2 log ```...

@LibretroAdmin I think it should be good to merge this feature, we confirmed it is working using udev and ds4. Thank you.

For information, DS4 gives with the SDL2 test program : `PS4 Controller 1 1 0`