The busybox binary built by busybox is stripped before portage's prepallstrip, causing the busybox.debug file (by splitdebug) to be useless. I'm not 100% sure if that is a desired behaviour, but I can't see why it should be, as busybox is world readable anyway. The attached patch applied over current ebuild sets the STRIP variable to true during make and make install phases, so that the resulting binary is not stripped. HTH, Diego
Created attachment 81758 [details, diff] Ebuild patch
fixed in cvs