--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_REMOVE_MODULES_LIST="FindFreetype FindDoxygen FindZLIB"
+
+inherit cmake vcs-snapshot
+
+DESCRIPTION="Object-oriented Graphics Rendering Engine"
+HOMEPAGE="https://www.ogre3d.org/"
+SRC_URI="https://bitbucket.org/sinbad/ogre/get/v${PV//./-}.tar.bz2 -> ${P}.tar.bz2"
+
+LICENSE="MIT public-domain"
+SLOT="0/1.9.0"
+KEYWORDS="~amd64 ~arm ~x86"
+
+# gles1 currently broken wrt bug #418201
+# gles1 does not even build wrt bug #506058
+IUSE="+boost cg doc double-precision examples +freeimage gl3plus gles2 gles3 ois +opengl poco profile tbb threads tools +zip"
+
+REQUIRED_USE="threads? ( ^^ ( boost poco tbb ) )
+ examples? ( ois )
+ poco? ( threads )
+ tbb? ( threads )
+ gl3plus? ( !gles2 !gles3 )
+ gles3? ( gles2 )
+ gl3plus? ( opengl )"
+
+RESTRICT="test" #139905
+
+RDEPEND="
+ media-libs/freetype:2
+ virtual/opengl
+ virtual/glu
+ x11-libs/libX11
+ x11-libs/libXaw
+ x11-libs/libXrandr
+ x11-libs/libXt
+ boost? ( dev-libs/boost:= )
+ cg? ( media-gfx/nvidia-cg-toolkit )
+ freeimage? ( media-libs/freeimage )
+ gles2? ( >=media-libs/mesa-9.0.0[gles2] )
+ gles3? ( >=media-libs/mesa-10.0.0[gles2] )
+ gl3plus? ( >=media-libs/mesa-9.2.5 )
+ ois? ( dev-games/ois )
+ threads? (
+ poco? ( dev-libs/poco )
+ tbb? ( dev-cpp/tbb )
+ )
+ tools? ( dev-libs/tinyxml[stl] )
+ zip? ( sys-libs/zlib dev-libs/zziplib )"
+DEPEND="${RDEPEND}
+ virtual/pkgconfig
+ x11-base/xorg-proto
+ doc? ( app-doc/doxygen )"
+
+PATCHES=(
+ "${FILESDIR}/${P}-remove_resource_path_to_bindir.patch"
+ "${FILESDIR}/${P}-remove_media_path_to_bindir.patch"
+ "${FILESDIR}/${P}-gcc52.patch"
+ "${FILESDIR}/${P}-samples.patch"
+)
+
+src_prepare() {
+ sed -i \
+ -e "s:share/OGRE/docs:share/doc/${PF}:" \
+ Docs/CMakeLists.txt || die
+ # Stupid build system hardcodes release names
+ sed -i \
+ -e '/CONFIGURATIONS/s:CONFIGURATIONS Release.*::' \
+ CMake/Utils/OgreConfigTargets.cmake || die
+
+ # make sure we're not using the included tinyxml
+ rm -f Tools/XMLConverter/{include,src}/tiny*.*
+
+ # Fix some path issues
+ cmake_src_prepare
+}
+
+src_configure() {
+ local mycmakeargs=(
+ -DOGRE_FULL_RPATH=NO
+ -DOGRE_USE_BOOST=$(usex boost)
+ -DOGRE_BUILD_PLUGIN_CG=$(usex cg)
+ -DOGRE_INSTALL_DOCS=$(usex doc)
+ -DOGRE_CONFIG_DOUBLE=$(usex double-precision)
+ -DOGRE_CONFIG_ENABLE_FREEIMAGE=$(usex freeimage)
+ -DOGRE_BUILD_RENDERSYSTEM_GL=$(usex opengl)
+ -DOGRE_BUILD_RENDERSYSTEM_GL3PLUS=$(usex gl3plus)
+ -DOGRE_BUILD_RENDERSYSTEM_GLES=FALSE
+ -DOGRE_BUILD_RENDERSYSTEM_GLES2=$(usex gles2)
+ -DOGRE_CONFIG_ENABLE_GLES3_SUPPORT=$(usex gles3)
+ -DOGRE_PROFILING=$(usex profile)
+ -DOGRE_BUILD_SAMPLES=$(usex examples)
+ -DOGRE_INSTALL_SAMPLES=$(usex examples)
+ -DOGRE_INSTALL_SAMPLES_SOURCE=$(usex examples)
+ -DOGRE_BUILD_TESTS=FALSE
+ -DOGRE_CONFIG_THREADS=$(usex threads 2 0)
+ -DOGRE_BUILD_TOOLS=$(usex tools)
+ -DOGRE_CONFIG_ENABLE_ZIP=$(usex zip)
+ )
+
+ if use threads ; then
+ local f
+ for f in boost poco tbb ; do
+ use ${f} || continue
+ mycmakeargs+=( -DOGRE_CONFIG_THREAD_PROVIDER=${f} )
+ break
+ done
+ fi
+
+ cmake_src_configure
+}
+
+src_install() {
+ cmake_src_install
+
+ CONFIGDIR=/etc/OGRE
+ SHAREDIR=/usr/share/OGRE
+
+ # plugins and resources are the main configuration
+ insinto "${CONFIGDIR}"
+ doins "${BUILD_DIR}"/bin/plugins.cfg
+ doins "${BUILD_DIR}"/bin/resources.cfg
+ dosym "${CONFIGDIR}"/plugins.cfg "${SHAREDIR}"/plugins.cfg
+ dosym "${CONFIGDIR}"/resources.cfg "${SHAREDIR}"/resources.cfg
+
+ # These are only for the sample browser
+ insinto "${SHAREDIR}"
+ doins "${BUILD_DIR}"/bin/quakemap.cfg
+ doins "${BUILD_DIR}"/bin/samples.cfg
+}