added ebuild for 0 A.D., from https://bugs.gentoo.org/show_bug.cgi?id=278541

games-strategy/0ad/0ad-99999.ebuild

@@ -0,0 +1,128 @@
+# Copyright 1999-2012 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+EAPI=3
+
+WX_GTK_VER="2.8"
+
+inherit eutils subversion wxwidgets games
+
+MY_PV="r${PV%_*}-alpha"
+MY_P=${PN}-${MY_PV}
+
+DESCRIPTION="A free, real-time strategy game"
+HOMEPAGE="http://wildfiregames.com/0ad/"
+ESVN_REPO_URI="http://svn.wildfiregames.com/public/ps/trunk"
+
+LICENSE="GPL-2 LGPL-2.1 MIT CCPL-Attribution-ShareAlike-3.0 as-is"
+SLOT="0"
+KEYWORDS=""
+IUSE="+audio +editor fam +nvtt +pch test"
+
+RDEPEND="
+	>=dev-lang/spidermonkey-1.8.5
+	dev-libs/boost
+	dev-libs/libxml2
+	!games-strategy/0ad-data
+	media-libs/libpng:0
+	media-libs/libsdl[X,audio?,opengl,video]
+	net-libs/enet:1.3
+	net-misc/curl
+	sys-libs/zlib
+	virtual/jpeg
+	virtual/opengl
+	audio? ( media-libs/libogg
+		media-libs/libvorbis
+		media-libs/openal )
+	editor? ( x11-libs/wxGTK:2.8[X] )
+	fam? ( virtual/fam )
+	nvtt? ( dev-util/nvidia-texture-tools )
+	"
+DEPEND="${RDEPEND}
+	dev-util/pkgconfig
+	test? ( dev-lang/perl )"
+
+S=${WORKDIR}/trunk
+
+pkg_setup() {
+	games_pkg_setup
+
+	if ! use pch ; then
+		eerror "pch useflag is potentially broken"
+		eerror "see http://trac.wildfiregames.com/ticket/1313"
+	fi
+}
+
+src_unpack() {
+	subversion_src_unpack
+}
+
+src_prepare() {
+	# respect flags for 3rd party fcollada
+	epatch "${FILESDIR}"/11339_alpha9-fcollada-makefile.patch
+}
+
+src_configure() {
+	cd build/workspaces || die
+
+	# custom configure script
+	local myconf
+	use nvtt || myconf="--without-nvtt"
+	use fam || myconf="${myconf} --without-fam"
+	use pch || myconf="${myconf} --without-pch"
+	use test || myconf="${myconf} --without-tests"
+	use audio || myconf="${myconf} --without-audio"
+
+	# don't use bundled sources
+	./update-workspaces.sh \
+		--with-system-nvtt \
+		--with-system-enet \
+		--with-system-mozjs185 \
+		$(use_enable editor atlas) \
+		--bindir="${GAMES_BINDIR}" \
+		--libdir="$(games_get_libdir)"/${PN} \
+		--datadir="${GAMES_DATADIR}"/${PN} \
+		${myconf} || die
+}
+
+src_compile() {
+	cd build/workspaces/gcc || die
+
+	emake CONFIG=Release verbose=1 || die
+}
+
+src_test() {
+	cd binaries/system || die
+
+	if use nvtt ; then
+		./test || die "test phase failed"
+	else
+		ewarn "Skipping tests because USE nvtt is disabled"
+	fi
+}
+
+src_install() {
+	# data
+	insinto "${GAMES_DATADIR}"/${PN}
+	doins -r binaries/data/* || die
+
+	# bin
+	dogamesbin binaries/system/pyrogenesis || die
+
+	# libs
+	exeinto "$(games_get_libdir)"/${PN}
+	doexe binaries/system/libCollada.so || die
+	if use editor ; then
+		doexe binaries/system/libAtlasUI.so || die
+	fi
+
+	# other
+	dodoc binaries/system/readme.txt || die
+	doicon build/resources/${PN}.png || die
+	games_make_wrapper ${PN} "${GAMES_BINDIR}/pyrogenesis"
+	make_desktop_entry ${PN} ${PN} ${PN}
+
+	# permissions
+	prepgamesdirs
+}

games-strategy/0ad/Manifest

@@ -0,0 +1 @@
+EBUILD 0ad-99999.ebuild 2725 SHA256 14d9fa3605f6b36229a7f3de5a8d772feb750d313a2971f7da97f35e06356b34 SHA512 aad5b87e21813bf0e4b2629c40cf43585272d2d6a44fe298818d1b2276b2fe149b76f2f1cc476b58e6030f8ff73ebcecd1fb556e66bdf87608b99a4291c17e3c WHIRLPOOL 155d29724f1fc015ca9733720f2c63bca72d348b43dbe7a1e30b35e29dfbf5c8d5f6e0f29638c6161c7b93adcdabc25ff338a3b2dcd3ca122f64af0d99e83e2c