mortzu [1] filed a deletion request for ioquake3 [2]: The latest upstream of ioquake3 is from 2009. A lot of stuff doesn't compile correctly in newer versions of GCC. I would recommend using the "ioquake3-git" PKGBUILD. There really aren't any downsides to using it: https://aur.archlinux.org/packages/ioquake3-git/ [1] https://aur.archlinux.org/account/mortzu/ [2] https://aur.archlinux.org/pkgbase/ioquake3/