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# Copyright 2025-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit cmake flag-o-matic virtualx
# Components/Overlay/CMakeLists.txt
IMGUI_PV="1.91.9b"
DESCRIPTION="Object-oriented Graphics Rendering Engine"
HOMEPAGE="https://www.ogre3d.org/"
SRC_URI="
https://github.com/OGRECave/ogre/archive/refs/tags/v${PV}.tar.gz
-> ${P}.tar.gz
https://github.com/ocornut/imgui/archive/v${IMGUI_PV}.tar.gz
-> imgui-${IMGUI_PV}.tar.gz
"
LICENSE="MIT public-domain"
SLOT="0/$(ver_cut 1-2)"
KEYWORDS="~amd64 ~arm ~x86"
IUSE="assimp bullet cg doc +dotscene egl-only freeimage +gl3plus gles2 glslang opengl qt6 samples test tiny tools sdl vulkan wayland"
REQUIRED_USE="
|| ( gl3plus gles2 opengl tiny vulkan )
egl-only? ( || ( gl3plus gles2 opengl ) )
test? ( samples )
vulkan? ( glslang )
wayland? ( egl-only )
"
# vulkan broken, proper handling required for wayland
RESTRICT="
!test? ( test )
vulkan? ( test )
wayland? ( test )
"
# freetype and zlib are automagic
# vulkan-loader is dlopen'd
RDEPEND="
media-libs/freetype:2
virtual/zlib:=
assimp? ( media-libs/assimp:= )
bullet? ( sci-physics/bullet:= )
cg? ( media-gfx/nvidia-cg-toolkit )
dotscene? ( dev-libs/pugixml )
freeimage? ( media-libs/freeimage )
gl3plus? ( virtual/opengl )
glslang? ( dev-util/glslang:= )
gles2? ( virtual/opengl )
opengl? ( virtual/opengl )
qt6? ( dev-qt/qtbase:6[gui] )
sdl? ( media-libs/libsdl2 )
tools? ( dev-libs/pugixml )
vulkan? ( media-libs/vulkan-loader )
wayland? ( dev-libs/wayland )
!wayland? (
x11-libs/libX11
x11-libs/libXaw
x11-libs/libXt
gl3plus? ( x11-libs/libXrandr )
gles2? ( x11-libs/libXrandr )
opengl? ( x11-libs/libXrandr )
)
"
DEPEND="${RDEPEND}
test? ( dev-cpp/gtest )
vulkan? ( dev-util/vulkan-headers )
"
BDEPEND="
virtual/pkgconfig
doc? ( app-text/doxygen[dot] )
"
PATCHES=(
"${FILESDIR}"/ogre-14.5.2-fix-tests.patch
"${FILESDIR}"/ogre-14.5.2-clang22.patch
)
src_prepare() {
cmake_src_prepare
# Users should set this via their CFLAGS (like -march)
sed -e '/check_cxx_compiler_flag(-msse OGRE_GCC_HAS_SSE)/d' \
-i CMakeLists.txt || die
# Force Qt6
sed -e '/find_package(QT NAMES Qt6 Qt5 COMPONENTS Core Gui QUIET CONFIG)/ { s/Qt5// }' \
-i CMake/Dependencies.cmake || die
# Lets not install test binaries
sed -e '/ogre_install_target(Test_Ogre "" FALSE)/d' \
-i Tests/CMakeLists.txt || die
}
src_configure() {
# odr violations
filter-lto
local mycmakeargs=(
# https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fb809aeadee57ffa24591e60cfb41aecd4823090
-DOGRE_ENABLE_PRECOMPILED_HEADERS=OFF
-DOGRE_BUILD_COMPONENT_BITES=ON
-DOGRE_BUILD_COMPONENT_BULLET=$(usex bullet)
-DOGRE_BUILD_COMPONENT_CSHARP=OFF
-DOGRE_BUILD_COMPONENT_JAVA=OFF
-DOGRE_BUILD_COMPONENT_MESHLODGENERATOR=ON
-DOGRE_BUILD_COMPONENT_OVERLAY=ON
-DOGRE_BUILD_COMPONENT_OVERLAY_IMGUI=ON
-DOGRE_BUILD_COMPONENT_PAGING=ON
-DOGRE_BUILD_COMPONENT_PROPERTY=ON
-DOGRE_BUILD_COMPONENT_PYTHON=OFF
-DOGRE_BUILD_COMPONENT_RTSHADERSYSTEM=ON
-DOGRE_BUILD_COMPONENT_TERRAIN=ON
-DOGRE_BUILD_COMPONENT_VOLUME=ON
-DOGRE_BUILD_PLUGIN_ASSIMP=$(usex assimp)
-DOGRE_BUILD_PLUGIN_BSP=ON
-DOGRE_BUILD_PLUGIN_CG=$(usex cg) # "deprecated"
-DOGRE_BUILD_PLUGIN_DOT_SCENE=$(usex dotscene)
-DOGRE_BUILD_PLUGIN_EXRCODEC=OFF # "deprecated" and doesn't work
-DOGRE_BUILD_PLUGIN_FREEIMAGE=$(usex freeimage) # "deprecated"
-DOGRE_BUILD_PLUGIN_GLSLANG=$(usex glslang)
-DOGRE_BUILD_PLUGIN_OCTREE=ON
-DOGRE_BUILD_PLUGIN_PCZ=ON
-DOGRE_BUILD_PLUGIN_PFX=ON
-DOGRE_BUILD_PLUGIN_RSIMAGE=OFF # rust
-DOGRE_BUILD_PLUGIN_STBI=ON # vendored stb headers
-DOGRE_BUILD_RENDERSYSTEM_GL=$(usex opengl)
-DOGRE_BUILD_RENDERSYSTEM_GL3PLUS=$(usex gl3plus)
-DOGRE_BUILD_RENDERSYSTEM_GLES2=$(usex gles2)
# "BETA". Tests will not pass with this
-DOGRE_BUILD_RENDERSYSTEM_VULKAN=$(usex vulkan)
-DOGRE_BUILD_RENDERSYSTEM_TINY=$(usex tiny)
-DOGRE_BUILD_SAMPLES=$(usex samples)
-DOGRE_INSTALL_SAMPLES=$(usex samples)
-DOGRE_BUILD_TOOLS=$(usex tools)
-DOGRE_INSTALL_TOOLS=$(usex tools)
-DOGRE_BUILD_XSIEXPORTER=OFF # softimage
-DOGRE_BUILD_TESTS=$(usex test)
-DOGRE_BUILD_DEPENDENCIES=OFF
-DIMGUI_DIR="${WORKDIR}/imgui-${IMGUI_PV}"
-DOGRE_CFG_INSTALL_PATH="/etc/OGRE"
-DOGRE_MEDIA_PATH="share/OGRE/Media"
-DOGRE_DOCS_PATH="share/docs/${PF}"
-DOGRE_INSTALL_DOCS=$(usex doc)
$(cmake_use_find_package qt6 QT)
$(cmake_use_find_package sdl SDL2)
)
if use gl3plus || use gles2 || use opengl ; then
mycmakeargs+=(
# TODO: wayland support needs more work.
# tests don't run with tinywl and it doesnt work at runtime
-DOGRE_USE_WAYLAND=$(usex wayland)
-DOGRE_GLSUPPORT_USE_EGL=$(usex egl-only)
)
fi
cmake_src_configure
}
src_compile() {
cmake_src_compile
use doc && cmake_build OgreDoc
}
src_test() {
virtx cmake_src_test
}
pkg_postinst() {
if use samples; then
elog "If you experience crashes when starting /usr/bin/SampleBrowser,"
elog "remove the cache directory at:"
elog " '~/.cache/OGRE Sample Browser'"
elog "first, before filing a bug report."
fi
}
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