bochs depends on wxGTK-2.6 which will be removed from the tree soon. bochs-2.4.1 seems to work (builds and launches anyways) with 2.8. Older versions do not build. Could you please update 2.4.1 to use 2.8, get it stabilized, and drop the older versions?
Created attachment 245921 [details, diff] bochs-2.4.1.ebuild.diff
*bochs-2.4.5 (04 Sep 2010) 04 Sep 2010; Luca Barbato <lu_zero@gentoo.org> bochs-2.4.1.ebuild, +bochs-2.4.5.ebuild: New version and wx 2.8 support