On the extras repository (for the next MuOS update), GitHub - MustardOS/extra: MustardOS Extras, the latest MAME core listed there is MAME 2015. It would be great to also have support for the latest MAME version and to have that core be updated periodically in MuOS to match the latestMAME versions.
I’ve tested this core extensively on my device personally and although it does not run everything amazingly, it does run some games well. It allows users to use the latest MAME ROM set. It also allows users to add software ROMs extending the systems MuOS can support by a vast amount.
I asked about this feature in the Discord a couple of months ago and I understand there were some struggles with building the MAME current core.
Would it be possible to refer to how Knulli builds it? Knulli currently bundles MAME 0.278 (MAME is on .279 as of August 2025). They have a set of build commands on their repo here: distribution/package/batocera/emulators/retroarch/libretro/libretro-mame/libretro-mame.mk at 18c8bc18df728210aaa349ac75e5277f189b4745 · knulli-cfw/distribution · GitHub
I go by the same username on Discord (emotion/emotionbycrj) if you would like to search and see my past discussions about this core. I’m able to sideload it personally without any issue but it would be wonderful to see official support.
Thank you:)