Add Gentoo ebuilds for beta

contrib/gentoo/games-action/d1x-rebirth/d1x-rebirth-0.59.100.ebuild

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+# This is a meta-package to depend on games-action/dxx-rebirth-$PVR and
+# require that it have the same USE flag settings as used on this
+# package.  See the comments in that ebuild for an explanation.
+#
+# This meta-package is provided primarily to ease the upgrade path, so
+# that users who previously installed a non-meta-package for d1x-rebirth
+# or d2x-rebirth are offered an upgrade to the combined dxx-rebirth
+# package.
+
+EAPI=6
+
+# Upstream's game engine number (Descent 1 vs Descent 2), not a release
+# version number.
+MY_ENGINE="${PN:1:1}"
+DESCRIPTION="Descent Rebirth - enhanced Descent $MY_ENGINE engine"
+HOMEPAGE="http://www.dxx-rebirth.com/"
+SRC_URI=""
+
+LICENSE="D1X GPL-3"
+SLOT="0"
+KEYWORDS="amd64 x86"
+IUSE="debug editor ipv6 +opengl timidity tracker"
+
+MY_USE_DEP="${IUSE//+} "
+DEPEND="=games-action/dxx-rebirth-$PVR[${MY_USE_DEP// /=,}d${MY_ENGINE}x]"
+RDEPEND="$DEPEND"
+unset MY_USE_DEP
+unset MY_ENGINE

contrib/gentoo/games-action/d2x-rebirth/d2x-rebirth-0.59.100.ebuild

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+../d1x-rebirth/d1x-rebirth-0.59.100.ebuild

contrib/gentoo/games-action/dxx-rebirth/dxx-rebirth-0.59.100.ebuild

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+dxx-rebirth-9999.ebuild

contrib/gentoo/games-action/dxx-rebirth/dxx-rebirth-9999.ebuild

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+# After release 0.58.1 and before beta release 0.59.100, upstream
+# combined the source for the Descent 1 and Descent 2 engines into a
+# single tree.  The combined tree builds common code into a static
+# library, which is linked into both games, but not installed.  Users
+# who want both engines benefit from this because they can build the
+# common code once, rather than once per game.  This ebuild supports
+# building one or both engines, depending on USE=d1x and USE=d2x.
+
+EAPI=6
+
+inherit eutils scons-utils toolchain-funcs
+if [[ "$PV" = 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/dxx-rebirth/dxx-rebirth"
+else
+	SRC_URI="https://github.com/dxx-rebirth/dxx-rebirth/archive/$PV.zip -> $PN-$PVR.zip"
+
+	# Restriction only for use in private overlays.  When this is added to a
+	# public tree, post the sources to a mirror and remove this restriction.
+	RESTRICT='mirror'
+fi
+
+DESCRIPTION="Descent Rebirth - enhanced Descent engines"
+HOMEPAGE="http://www.dxx-rebirth.com/"
+
+LICENSE="D1X GPL-3"
+SLOT="0"
+# Other architectures are reported to work, but not tested regularly by
+# the core team.
+#
+# Raspberry Pi support is tested by an outside contributor, and his
+# fixes are merged into the main source by upstream.
+#
+# Cross-compilation to Windows is also supported.
+KEYWORDS="amd64 x86"
+# Default to building both game engines.  The total size is relatively
+# small.
+IUSE="+d1x +d2x debug editor ipv6 +opengl timidity tracker"
+
+DEPEND="opengl? ( virtual/opengl virtual/glu )
+	dev-games/physfs[hog,mvl,zip]
+	media-libs/libsdl[sound,opengl?,video]
+	media-libs/sdl-mixer[timidity?]"
+# The build process does not use the game data, nor change how the game
+# is built based on what game data will be used.  At startup, the game
+# will search for both types of game data and use what it finds.  Users
+# can switch between shareware/retail data at any time by
+# adding/removing the appropriate data packages.  A rebuild is _not_
+# required after swapping the data files.
+RDEPEND="${DEPEND}
+	d1x? (
+		|| (
+			games-action/descent1-data
+			games-action/descent1-demodata
+		)
+	)
+	d2x? (
+		|| (
+			games-action/descent2-data
+			games-action/descent2-demodata
+		)
+	)
+"
+
+# This ebuild builds d1x-rebirth, d2x-rebirth, or both.  Building none
+# would mean this ebuild installs zero files.
+REQUIRED_USE="|| ( d1x d2x )"
+
+dxx_scons() {
+	# Always build profile `m`.  If use editor, also build profile `e`.
+	# Set most variables in the default anonymous profile.  Only
+	# `builddir` and `editor` are set in the named profiles, since those
+	# must be different between the two builds.
+	local scons_build_profile=m mysconsargs=(
+		sdlmixer=1
+		verbosebuild=1
+		debug=$(usex debug 1 0)
+		ipv6=$(usex ipv6 1 0)
+		opengl=$(usex opengl 1 0)
+		use_tracker=$(usex tracker 1 0)
+		prefix=/usr
+		m_builddir=build/main/
+		m_editor=0
+	)
+	if use editor; then
+		scons_build_profile+=+e
+		mysconsargs+=( 
+			e_builddir=build/editor/
+			e_editor=1
+		)
+	fi
+	# Add sharepath and enable build of selected games.  The trailing
+	# comma after `$scons_build_profile` is required to cause scons to
+	# search the anonymous profile.  If omitted, only settings from the
+	# named profile would be used.
+	use d1x && mysconsargs+=( d1x_sharepath="/usr/share/games/d1x" d1x="$scons_build_profile," )
+	use d2x && mysconsargs+=( d2x_sharepath="/usr/share/games/d2x" d2x="$scons_build_profile," )
+	escons "${mysconsargs[@]}" "$@"
+}
+
+src_compile() {
+	tc-export CXX PKG_CONFIG
+	dxx_scons register_install_target=0 build
+}
+
+src_install() {
+	dxx_scons register_compile_target=0 register_install_target=1 DESTDIR="$D" "$D"
+}