severach [1] filed a deletion request for sdlmame-0137 [2]: @MarsSeed: EOL version since 2010, gcc45 unbuildable since 2021. Repo carries 'mame', which replaces 'sdlmame'.
[1] https://aur.archlinux.org/account/severach/ [2] https://aur.archlinux.org/pkgbase/sdlmame-0137/