vegastrike-0.2.9.4.ebuild should have the additional dependency "media-libs/openal"
any reason why ?
configure.in checks for openal and only adds support if it is present.
then add IUSE
i added a local IUSE for openal http://cvs.gentoo.org/cgi-bin/viewcvs.cgi/gentoo-x86/app-games/vegastrike/vegastrike-0.3.1.ebuild?rev=1.1&content-type=text/vnd.viewcvs-markup