sci-libs/opencascade: add 7.7.1, 7.7.2, 7.8.0, 9999

Closes: https://bugs.gentoo.org/923350
Closes: https://bugs.gentoo.org/911578
Closes: https://bugs.gentoo.org/908889
Signed-off-by: Paul Zander <negril.nx+gentoo@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/35374
Signed-off-by: Sam James <sam@gentoo.org>

9 files changed, 1539 insertions, 21 deletions

diff --git a/sci-libs/opencascade/Manifest b/sci-libs/opencascade/Manifest
index af71bb8b4462..ac0e7aa5db19 100644
--- a/sci-libs/opencascade/Manifest
+++ b/sci-libs/opencascade/Manifest
@@ -1,2 +1,7 @@
 DIST opencascade-7.6.3.tar.gz 48216090 BLAKE2B ff0b63250e77b0240bd99bba38cd0e6b0a8c88bf39e495f5d51d7913f097e2cad83a5ad121e9d56de11c74008249c99a41f4615269a085b7cf97c3d7f0477d6d SHA512 c708f76edb707ba18bdfe7442ed8fa500894ee6c1cd8d0313eb906b3aa7dfa40a575f04dbccd70e84395d670f2b93fb8529f3d59726449234e627b9f35b9dded
 DIST opencascade-7.7.0.tar.gz 48393806 BLAKE2B b41da7bdd07aa6ef52f7833bef3e8a9fc2ca16cbf754773cb7adcc059c11c2a7937d279a2b6cf3096e7af6fbb42c6fdc2a5c98340d6b084d2ba100ba2c538f2a SHA512 6c90e2761f752241417ae6f18d819f51e66b32f3a50a97384f29ed73fa07f4cded84c71a6f6ba302d5e35c57e2fc13001619521eaf45757e4e5ff670d94bbf5c
+DIST opencascade-7.7.1.tar.gz 48408076 BLAKE2B 46e14a47a0ce555ac17a3fca520c1f21d7ca05c67b54259e3d2d8560618db096313d5be3d5e4a24acad1912534c17293ad203f48dd7464690aec86e287d9f230 SHA512 f095848d212afbe7e71614d46f57222e347246aec7c92aafae59e6f07798f5371c7a125042c149393ee7d361f28eb89b5196de17a7cc37233f1586ba919c0839
+DIST opencascade-7.7.2.tar.gz 48404428 BLAKE2B 28d637e75eca570e38401a0a59127ffdbcb06838a91cc3899fe905834bb47e0e9a92d16cde52027d94e78b0fbddc2043340a35dcb0f4a472c4f2bdac2713216c SHA512 d9e882d44bb65616f8cfce68ebdcd5765669b84e3d82cfb2d1bc22b71b0e878442c079bacc37e9d54f28ce98a7c23bf81f2a3e3e7bbeeec38927ca739f423dee
+DIST opencascade-7.8.0.tar.gz 48428565 BLAKE2B 91253101072af27c94b82b82beed5c1f1d7460f4154600fba805c5b2d27976a4841b9a9dfab9e67706d02463b2c630c5b63d1f056e84c69c9c8eeaca7e7caebf SHA512 af176cbd105c49949282c16bb6e30f69167bc6c00a50e0ae69aea555815d47ac3c4540c233e596c5add7cb846c2b33d7be267d8e02472286e758b662b4a652ab
+DIST opencascade-dataset-7.7.0.tar.gz 128392200 BLAKE2B ebfbe6f24520144ca4a82e4ddd0486890552c2de1b62bf5c0d4990d777d4a1458dea54f8a6f08d8a0999582fb4325eda0002fc8a0137b9e66d024a47145d1279 SHA512 71d7e807b1d629fe7371b9d1d503024d00b7c1ae1775e62803eeffd127bd1c768e5240fdd1f949a237737089d528b5d4e43d26db025bbe14a4e0e4616ebdc5d8
+DIST opencascade-dataset-7.8.0.tar.xz 97049756 BLAKE2B aae5f076d9fc8a0d8a05028b0d9ffb527978e7acfdf5ecbc7e71c5ee3d6060cd7db9e56dba5b94a445bf5cf208126711cda70306607bdc5cd5e8b68df8fc150c SHA512 9b4c91d7b4743c47f2cf8d9a3b6ded73409a13133013424150ee9bdb61fd771c0b8799c7f31b459a7d2ba140399b9c0c972e2d0476188006361b4fb04042d990
diff --git a/sci-libs/opencascade/files/opencascade-7.7.0-jemalloc-lib-type.patch b/sci-libs/opencascade/files/opencascade-7.7.0-jemalloc-lib-type.patch
new file mode 100644
index 000000000000..c80d9946b7c6
--- /dev/null
+++ b/sci-libs/opencascade/files/opencascade-7.7.0-jemalloc-lib-type.patch
@@ -0,0 +1,27 @@
+From: Paul Zander <negril.nx+gentoo@gmail.com>
+
+Only try to find the jemalloc libs we are going to use
+
+diff --git a/adm/cmake/jemalloc.cmake b/adm/cmake/jemalloc.cmake
+index b37d5d276..deef66d6c 100644
+--- a/adm/cmake/jemalloc.cmake
++++ b/adm/cmake/jemalloc.cmake
+@@ -128,6 +128,7 @@ endmacro()
+ # Reset CSF variable
+ set (CSF_MMGR "")
+ 
++if(BUILD_LIBRARY_TYPE EQUAL "Static")
+ # find static jemalloc lib
+ SET(CMAKE_FIND_LIBRARY_SUFFIXES ".lib" ".a")
+ if (WIN32)
+@@ -137,7 +138,10 @@ elseif(NOT WIN32)
+   SET(CMAKE_FIND_LIBRARY_SUFFIXES "" "so")
+   JEMALLOC_LIB_SEARCH ("jemalloc.so.2" "SHARED")
+ endif()
++endif()
+ 
++if(BUILD_LIBRARY_TYPE EQUAL "Shared")
+ # find shared jemalloc lib
+ SET(CMAKE_FIND_LIBRARY_SUFFIXES ".dll" ".so")
+ JEMALLOC_LIB_SEARCH ("jemalloc" "SHARED")
++endif()
diff --git a/sci-libs/opencascade/files/opencascade-7.8.0-cmake-min-version.patch b/sci-libs/opencascade/files/opencascade-7.8.0-cmake-min-version.patch
new file mode 100644
index 000000000000..b0a9d026f34e
--- /dev/null
+++ b/sci-libs/opencascade/files/opencascade-7.8.0-cmake-min-version.patch
@@ -0,0 +1,14 @@
+From: Paul Zander <negril.nx+gentoo@gmail.com>
+
+Bump cmake minimum version to remove warning
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 88d34f0..232c643 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,4 +1,4 @@
+-cmake_minimum_required (VERSION 3.1 FATAL_ERROR)
++cmake_minimum_required (VERSION 3.5 FATAL_ERROR)
+ 
+ set (CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/adm/cmake")
+ 
diff --git a/sci-libs/opencascade/files/opencascade-7.8.0-tests.patch b/sci-libs/opencascade/files/opencascade-7.8.0-tests.patch
new file mode 100644
index 000000000000..cf45ca5ce246
--- /dev/null
+++ b/sci-libs/opencascade/files/opencascade-7.8.0-tests.patch
@@ -0,0 +1,19 @@
+From: Paul Zander <negril.nx+gentoo@gmail.com>
+
+Fix test harness script
+
+diff --git a/adm/templates/draw.sh b/adm/templates/draw.sh
+index 02e6043..c7347e0 100755
+--- a/adm/templates/draw.sh
++++ b/adm/templates/draw.sh
+@@ -4,7 +4,8 @@ aCurrentPath="$PWD"
+ aScriptPath=${BASH_SOURCE%/*}; if [ -d "${aScriptPath}" ]; then cd "$aScriptPath"; fi; aScriptPath="$PWD";
+ 
+ source "${aScriptPath}/env.sh" "$1"
++shift
+ 
+ echo 'Hint: use "pload ALL" command to load standard commands'
+-cd ${aCurrentPath}
+-DRAWEXE
++cd "${aCurrentPath}"
++DRAWEXE "$@"
diff --git a/sci-libs/opencascade/metadata.xml b/sci-libs/opencascade/metadata.xml
index 482d7bde88bb..f3b6e96ad889 100644
--- a/sci-libs/opencascade/metadata.xml
+++ b/sci-libs/opencascade/metadata.xml
@@ -10,26 +10,17 @@
 	<name>Proxy Maintainers</name>
 </maintainer>
 <use>
-	<flag name="eigen">
-		Enable support for eigenvalues through the header-only
-		<pkg>dev-cpp/eigen</pkg> package.
-	</flag>
-	<flag name="freeimage">
-		Enable support for image i/o via <pkg>media-libs/freeimage</pkg>
-	</flag>
-	<flag name="json">
-		Enable JSON support through <pkg>dev-libs/rapidjson</pkg>
-	</flag>
-	<flag name="optimize">
-		Don't clear allocated memory. Use optimized memory manager unless
-		tbb USE flag is set.
-	</flag>
-	<flag name="tbb">
-		Enable multithreading with the Intel Threads Building Block
-		<pkg>dev-cpp/tbb</pkg>
-	</flag>
-	<flag name="vtk">
-		Enable Visualization Toolkit support via <pkg>sci-libs/vtk</pkg>
-	</flag>
+	<flag name="eigen">Enable support for eigenvalues through the header-only <pkg>dev-cpp/eigen</pkg> package.</flag>
+	<flag name="freeimage">Enable support for image i/o via <pkg>media-libs/freeimage</pkg></flag>
+	<flag name="freetype">Enable <pkg>media-libs/freetype</pkg> support</flag>
+	<flag name="jemalloc">Enable jemalloc allocator support via <pkg>dev-libs/jemalloc</pkg></flag>
+	<flag name="json">Enable JSON support through <pkg>dev-libs/rapidjson</pkg></flag>
+	<flag name="optimize">Don't clear allocated memory. Use optimized memory manager unlesstbb USE flag is set.</flag>
+	<flag name="tbb">Enable multithreading with the Intel Threads Building Block <pkg>dev-cpp/tbb</pkg></flag>
+	<flag name="testprograms">Indicates whether non-regression OCCT test scripts should be installed</flag>
+	<flag name="vtk">Enable Visualization Toolkit support via <pkg>sci-libs/vtk</pkg></flag>
 </use>
+<upstream>
+	<remote-id type="github">Open-Cascade-SAS/OCCT</remote-id>
+</upstream>
 </pkgmetadata>
diff --git a/sci-libs/opencascade/opencascade-7.7.1.ebuild b/sci-libs/opencascade/opencascade-7.7.1.ebuild
new file mode 100644
index 000000000000..384a99eaaf44
--- /dev/null
+++ b/sci-libs/opencascade/opencascade-7.7.1.ebuild
@@ -0,0 +1,366 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake virtualx
+
+DESCRIPTION="Development platform for CAD/CAE, 3D surface/solid modeling and data exchange"
+HOMEPAGE="https://www.opencascade.com"
+
+MY_PN="OCCT"
+
+MY_TEST_PV="7.7.0"
+MY_TEST_PV2="${MY_TEST_PV//./_}"
+
+SRC_URI="
+	test? ( https://github.com/Open-Cascade-SAS/${MY_PN}/releases/download/V${MY_TEST_PV2}/${PN}-dataset-${MY_TEST_PV}.tgz
+		-> ${PN}-dataset-${MY_TEST_PV}.tar.gz )
+"
+
+if [[ ${PV} = *9999* ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/Open-Cascade-SAS/${MY_PN}.git"
+else
+	MY_PV="${PV//./_}"
+	SRC_URI+="
+		https://github.com/Open-Cascade-SAS/${MY_PN}/archive/refs/tags/V${MY_PV}.tar.gz -> ${P}.tar.gz
+	"
+	S="${WORKDIR}/${MY_PN}-${MY_PV}"
+	KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86"
+fi
+
+LICENSE="|| ( Open-CASCADE-LGPL-2.1-Exception-1.0 LGPL-2.1 )"
+SLOT="0/$(ver_cut 1-2)"
+IUSE="X debug doc examples ffmpeg freeimage freetype gles2-only +gui jemalloc json +opengl optimize tbb test testprograms tk vtk"
+
+REQUIRED_USE="
+	?? ( optimize tbb )
+	?? ( opengl gles2-only )
+	test? ( freeimage json opengl )
+"
+
+# There's no easy way to test. Testing needs a rather big environment properly set up.
+RESTRICT="!test? ( test )"
+
+# ffmpeg: https://tracker.dev.opencascade.org/view.php?id=32871
+RDEPEND="
+	dev-lang/tcl:=
+	tk? ( dev-lang/tk:= )
+	dev-libs/double-conversion
+	freetype? (
+		media-libs/fontconfig
+		media-libs/freetype:2
+	)
+	opengl? (
+		media-libs/libglvnd
+	)
+	X? (
+		x11-libs/libX11
+	)
+	gui? (
+		examples? (
+			dev-qt/qtcore:5
+			dev-qt/qtgui:5
+			dev-qt/qtquickcontrols2:5
+			dev-qt/qtwidgets:5
+			dev-qt/qtxml:5
+		)
+	)
+	ffmpeg? ( <media-video/ffmpeg-5:= )
+	freeimage? ( media-libs/freeimage )
+	jemalloc? ( dev-libs/jemalloc )
+	tbb? ( dev-cpp/tbb:= )
+	vtk? (
+		sci-libs/vtk:=[rendering]
+		tbb? (
+			sci-libs/vtk:=[tbb,-cuda]
+		)
+	)
+"
+DEPEND="
+	${RDEPEND}
+	X? ( x11-base/xorg-proto )
+	json? ( dev-libs/rapidjson )
+"
+BDEPEND="
+	doc? ( app-text/doxygen[dot] )
+	gui? (
+		examples? ( dev-qt/linguist-tools:5 )
+	)
+	test? ( dev-tcltk/thread )
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-7.5.1-0005-fix-write-permissions-on-scripts.patch"
+	"${FILESDIR}/${PN}-7.5.1-0006-fix-creation-of-custom.sh-script.patch"
+	"${FILESDIR}/${PN}-7.7.0-fix-installation-of-cmake-config-files.patch"
+	"${FILESDIR}/${PN}-7.7.0-avoid-pre-stripping-binaries.patch"
+	"${FILESDIR}/${PN}-7.7.0-build-against-vtk-9.2.patch"
+	"${FILESDIR}/${PN}-7.7.0-musl.patch"
+	"${FILESDIR}/${PN}-7.7.0-jemalloc-lib-type.patch"
+	"${FILESDIR}/${PN}-7.8.0-cmake-min-version.patch"
+	"${FILESDIR}/${PN}-7.8.0-tests.patch"
+)
+
+src_unpack() {
+	if [[ ${PV} = *9999* ]] ; then
+		git-r3_src_unpack
+	else
+		unpack "${P}.tar.gz"
+	fi
+
+	if use test; then
+		mkdir "${WORKDIR}/data"
+		pushd "${WORKDIR}/data" > /dev/null || die
+		# should be in paths indicated by CSF_TestDataPath environment variable,
+		# or in subfolder data in the script directory
+		unpack "${PN}-dataset-${MY_TEST_PV}.tar.gz"
+		popd > /dev/null || die
+	fi
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	sed -e 's|/lib\$|/'"$(get_libdir)"'\$|' \
+		-i adm/templates/OpenCASCADEConfig.cmake.in || die
+
+	# There is an OCCT_UPDATE_TARGET_FILE cmake macro that fails due to some
+	# assumptions it makes about installation paths. Rather than fixing it, just
+	# get rid of the mechanism altogether - its purpose is to allow a
+	# side-by-side installation of release and debug libraries.
+	sed -e 's|\\${OCCT_INSTALL_BIN_LETTER}||' \
+		-i adm/cmake/occt_toolkit.cmake || die
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-D3RDPARTY_DIR="${ESYSROOT}/usr"
+		-DBUILD_CPP_STANDARD="C++17"
+		-DBUILD_SOVERSION_NUMBERS=2
+
+		-DBUILD_DOC_Overview="$(usex doc)"
+		-DBUILD_Inspector="$(usex gui)"
+
+		-DBUILD_ENABLE_FPE_SIGNAL_HANDLER="$(usex debug)"
+		-DBUILD_USE_PCH="no"
+		# -DBUILD_OPT_PROFILE="Default" # Production
+		# -DBUILD_RESOURCES="yes"
+		# -DBUILD_YACCLEX="yes"
+
+		-DBUILD_RELEASE_DISABLE_EXCEPTIONS="no" # bug #847916
+		-DINSTALL_DIR="${EPREFIX}/usr"
+		-DINSTALL_DIR_BIN="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_CMAKE="$(get_libdir)/cmake/${PN}"
+		-DINSTALL_DIR_DATA="share/${PN}/data"
+		-DINSTALL_DIR_DOC="share/doc/${PF}"
+		-DINSTALL_DIR_INCLUDE="include/${PN}"
+		-DINSTALL_DIR_LIB="$(get_libdir)/${PN}"
+		-DINSTALL_DIR_RESOURCE="share/${PN}/resources"
+		-DINSTALL_DIR_SAMPLES="share/${PN}/samples"
+		-DINSTALL_DIR_SCRIPT="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_TESTS="share/${PN}/tests"
+		-DINSTALL_DIR_WITH_VERSION="no"
+		-DINSTALL_SAMPLES="$(usex examples)"
+
+		-DINSTALL_TEST_CASES="$(usex testprograms)"
+
+		# no package yet in tree
+		-DUSE_DRACO="no"
+		-DUSE_FFMPEG="$(usex ffmpeg)"
+		-DUSE_FREEIMAGE="$(usex freeimage)"
+		-DUSE_FREETYPE="$(usex freetype)"
+		# Indicates whether OpenGL ES 2.0 should be used in OCCT visualization module
+		-DUSE_GLES2="$(usex gles2-only)"
+		# Indicates whether OpenGL desktop should be used in OCCT visualization module
+		-DUSE_OPENGL="$(usex opengl)"
+		# no package in tree
+		-DUSE_OPENVR="no"
+		-DUSE_RAPIDJSON="$(usex json)"
+		-DUSE_TBB="$(usex tbb)"
+		-DUSE_TK="$(usex tk)"
+		-DUSE_VTK="$(usex vtk)"
+		-DUSE_XLIB="$(usex X)"
+	)
+
+	# Select using memory manager tool.
+	if ! use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=NATIVE )
+	elif use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=JEMALLOC )
+	elif ! use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=TBB )
+	elif use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=FLEXIBLE )
+	fi
+
+	if use doc; then
+		mycmakeargs+=(
+			-DINSTALL_DOC_Overview="yes"
+			-D3RDPARTY_SKIP_DOT_EXECUTABLE="no"
+		)
+	fi
+
+	if use gui; then
+		mycmakeargs+=(
+			-D3RDPARTY_QT_DIR="${ESYSROOT}/usr"
+			-DBUILD_SAMPLES_QT="$(usex examples)"
+		)
+	fi
+
+	if use jemalloc; then
+		mycmakeargs+=(
+			-D3RDPARTY_JEMALLOC_INCLUDE_DIR="${ESYSROOT}/usr/include/jemalloc"
+		)
+	fi
+
+	if use tbb; then
+		mycmakeargs+=(
+			-D3RDPARTY_TBB_DIR="${ESYSROOT}/usr"
+		)
+	fi
+
+	if use vtk; then
+		local vtk_ver
+		vtk_ver="$(best_version "sci-libs/vtk")"
+		vtk_ver=$(ver_cut 1-2 "${vtk_ver#sci-libs/vtk-}")
+		mycmakeargs+=(
+			-D3RDPARTY_VTK_INCLUDE_DIR="${ESYSROOT}/usr/include/vtk-${vtk_ver}"
+			-D3RDPARTY_VTK_LIBRARY_DIR="${ESYSROOT}/usr/$(get_libdir)"
+		)
+	fi
+
+	cmake_src_configure
+
+	sed -e "s|lib/|$(get_libdir)/|" \
+		-e "s|VAR_CASROOT|${EPREFIX}/usr|" \
+		< "${FILESDIR}/${PN}.env.in" > "${T}/99${PN}" || die
+
+	# use TBB for memory allocation optimizations
+	if use tbb; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=2|' -i "${T}/99${PN}" || die
+	fi
+
+	# use internal optimized memory manager and don't clear memory with this
+	# memory manager.
+	if use optimize ; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=1|' \
+			-e 's|^#MMGT_CLEAR=1$|MMGT_CLEAR=0|' \
+			-i "${T}/99${PN}" || die
+	fi
+}
+
+src_test() {
+	echo "export CSF_OCCTDataPath=${WORKDIR}/data" >> "${BUILD_DIR}/custom.sh" || die
+
+	if has_version media-fonts/dejavu; then
+		cp "${ESYSROOT}/usr/share/fonts/dejavu/DejaVuSans.ttf" "${WORKDIR}/data/" # no die here as this isn't fatal
+	fi
+
+	local test_file=${T}/testscript.tcl
+
+	local draw_opts=(
+		i # see ${BUILD_DIR}/custom*.sh
+		# -b # batch mode (no GUI, no viewers)
+		-v # no GUI, use virtual (off-screen) windows for viewers
+	)
+
+	local test_names=(
+		"demo draw bug30430" # prone to dying due to cpu limit
+	)
+	local test_opts=( # run single tests
+		-overwrite
+	)
+	for test_name in "${test_names[@]}"; do
+		cat >> "${test_file}" <<- _EOF_ || die
+			test ${test_name} -outfile "${BUILD_DIR}/test_results/${test_name// /\/}.html" ${test_opts[@]}
+		_EOF_
+	done
+
+	local testgrid_opts=()
+
+	local SKIP_TESTS=()
+
+	if [[ "${OCCT_OPTIONAL_TESTS}" != "true" ]]; then
+		SKIP_TESTS+=(
+			'blend complex F4'
+			'bugs'
+			'geometry circ2d3Tan '{CircleCircleLin_11,CircleLinPoint_11}
+			'heal checkshape bug32448_1'
+			'hlr exact_hlr bug25813_2'
+
+			'hlr poly_hlr '{bug25813_2,bug25813_3,bug25813_4,Plate}
+			'lowalgos intss bug'{565,567_1,25950,27431,29807_i1003,29807_i2006,29807_i3003,29807_i5002,30703}
+			'lowalgos proximity '{A4,A5}
+			'opengl background bug27836'
+			'opengl drivers opengles'
+			'opengles3'
+
+			'demo draw bug30430'
+		)
+
+		local DEL_TESTS=(
+			'opengl/data/background/bug27836'
+			'perf/mesh/bug26965'
+			'v3d/trsf/bug26029'
+		)
+
+		for test in "${DEL_TESTS[@]}"; do
+			rm "${CMAKE_USE_DIR}/tests/${test}" || die
+		done
+	fi
+
+	if ! use vtk; then
+		SKIP_TESTS+=(
+			'vtk'
+		)
+		echo "IGNORE /Could not open: libTKIVtkDraw/skip VTK" >> "${CMAKE_USE_DIR}/tests/opengl/parse.rules"
+	fi
+
+	if [[ -n "${SKIP_TESTS[*]}" ]]; then
+		testgrid_opts+=( -exclude "$(IFS=',' ; echo "${SKIP_TESTS[*]}")" )
+	fi
+
+	testgrid_opts+=(
+		# -refresh 5
+		-overwrite
+	)
+	cat >> "${test_file}" <<- _EOF_ || die
+		testgrid -outdir "${BUILD_DIR}/test_results" ${testgrid_opts[@]}
+	_EOF_
+
+	# # regenerate summary in case we have to
+	# cat >> "${test_file}" <<- _EOF_ || die
+	# 	testsummarize "${BUILD_DIR}/test_results"
+	# _EOF_
+
+	# Work around zink warnings
+	export LIBGL_ALWAYS_SOFTWARE="true"
+
+	export CASROOT="${BUILD_DIR}"
+
+	virtx \
+	"${BUILD_DIR}/draw.sh" \
+		"${draw_opts[@]}" \
+		-f "${test_file}"
+
+	if [[ ! -f "${BUILD_DIR}/test_results/tests.log" ]]; then
+		eerror "tests never ran!"
+		die
+	fi
+	failed_tests="$(grep ": FAILED" "${BUILD_DIR}/test_results/tests.log")"
+	if [[ -n ${failed_tests} ]]; then
+		eerror "Failed tests:"
+		eerror "${failed_tests}"
+		die
+	fi
+}
+
+src_install() {
+	cmake_src_install
+
+	doenvd "${T}/99${PN}"
+
+	docompress -x "/usr/share/doc/${PF}/overview/html"
+}
diff --git a/sci-libs/opencascade/opencascade-7.7.2.ebuild b/sci-libs/opencascade/opencascade-7.7.2.ebuild
new file mode 100644
index 000000000000..384a99eaaf44
--- /dev/null
+++ b/sci-libs/opencascade/opencascade-7.7.2.ebuild
@@ -0,0 +1,366 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake virtualx
+
+DESCRIPTION="Development platform for CAD/CAE, 3D surface/solid modeling and data exchange"
+HOMEPAGE="https://www.opencascade.com"
+
+MY_PN="OCCT"
+
+MY_TEST_PV="7.7.0"
+MY_TEST_PV2="${MY_TEST_PV//./_}"
+
+SRC_URI="
+	test? ( https://github.com/Open-Cascade-SAS/${MY_PN}/releases/download/V${MY_TEST_PV2}/${PN}-dataset-${MY_TEST_PV}.tgz
+		-> ${PN}-dataset-${MY_TEST_PV}.tar.gz )
+"
+
+if [[ ${PV} = *9999* ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/Open-Cascade-SAS/${MY_PN}.git"
+else
+	MY_PV="${PV//./_}"
+	SRC_URI+="
+		https://github.com/Open-Cascade-SAS/${MY_PN}/archive/refs/tags/V${MY_PV}.tar.gz -> ${P}.tar.gz
+	"
+	S="${WORKDIR}/${MY_PN}-${MY_PV}"
+	KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86"
+fi
+
+LICENSE="|| ( Open-CASCADE-LGPL-2.1-Exception-1.0 LGPL-2.1 )"
+SLOT="0/$(ver_cut 1-2)"
+IUSE="X debug doc examples ffmpeg freeimage freetype gles2-only +gui jemalloc json +opengl optimize tbb test testprograms tk vtk"
+
+REQUIRED_USE="
+	?? ( optimize tbb )
+	?? ( opengl gles2-only )
+	test? ( freeimage json opengl )
+"
+
+# There's no easy way to test. Testing needs a rather big environment properly set up.
+RESTRICT="!test? ( test )"
+
+# ffmpeg: https://tracker.dev.opencascade.org/view.php?id=32871
+RDEPEND="
+	dev-lang/tcl:=
+	tk? ( dev-lang/tk:= )
+	dev-libs/double-conversion
+	freetype? (
+		media-libs/fontconfig
+		media-libs/freetype:2
+	)
+	opengl? (
+		media-libs/libglvnd
+	)
+	X? (
+		x11-libs/libX11
+	)
+	gui? (
+		examples? (
+			dev-qt/qtcore:5
+			dev-qt/qtgui:5
+			dev-qt/qtquickcontrols2:5
+			dev-qt/qtwidgets:5
+			dev-qt/qtxml:5
+		)
+	)
+	ffmpeg? ( <media-video/ffmpeg-5:= )
+	freeimage? ( media-libs/freeimage )
+	jemalloc? ( dev-libs/jemalloc )
+	tbb? ( dev-cpp/tbb:= )
+	vtk? (
+		sci-libs/vtk:=[rendering]
+		tbb? (
+			sci-libs/vtk:=[tbb,-cuda]
+		)
+	)
+"
+DEPEND="
+	${RDEPEND}
+	X? ( x11-base/xorg-proto )
+	json? ( dev-libs/rapidjson )
+"
+BDEPEND="
+	doc? ( app-text/doxygen[dot] )
+	gui? (
+		examples? ( dev-qt/linguist-tools:5 )
+	)
+	test? ( dev-tcltk/thread )
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-7.5.1-0005-fix-write-permissions-on-scripts.patch"
+	"${FILESDIR}/${PN}-7.5.1-0006-fix-creation-of-custom.sh-script.patch"
+	"${FILESDIR}/${PN}-7.7.0-fix-installation-of-cmake-config-files.patch"
+	"${FILESDIR}/${PN}-7.7.0-avoid-pre-stripping-binaries.patch"
+	"${FILESDIR}/${PN}-7.7.0-build-against-vtk-9.2.patch"
+	"${FILESDIR}/${PN}-7.7.0-musl.patch"
+	"${FILESDIR}/${PN}-7.7.0-jemalloc-lib-type.patch"
+	"${FILESDIR}/${PN}-7.8.0-cmake-min-version.patch"
+	"${FILESDIR}/${PN}-7.8.0-tests.patch"
+)
+
+src_unpack() {
+	if [[ ${PV} = *9999* ]] ; then
+		git-r3_src_unpack
+	else
+		unpack "${P}.tar.gz"
+	fi
+
+	if use test; then
+		mkdir "${WORKDIR}/data"
+		pushd "${WORKDIR}/data" > /dev/null || die
+		# should be in paths indicated by CSF_TestDataPath environment variable,
+		# or in subfolder data in the script directory
+		unpack "${PN}-dataset-${MY_TEST_PV}.tar.gz"
+		popd > /dev/null || die
+	fi
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	sed -e 's|/lib\$|/'"$(get_libdir)"'\$|' \
+		-i adm/templates/OpenCASCADEConfig.cmake.in || die
+
+	# There is an OCCT_UPDATE_TARGET_FILE cmake macro that fails due to some
+	# assumptions it makes about installation paths. Rather than fixing it, just
+	# get rid of the mechanism altogether - its purpose is to allow a
+	# side-by-side installation of release and debug libraries.
+	sed -e 's|\\${OCCT_INSTALL_BIN_LETTER}||' \
+		-i adm/cmake/occt_toolkit.cmake || die
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-D3RDPARTY_DIR="${ESYSROOT}/usr"
+		-DBUILD_CPP_STANDARD="C++17"
+		-DBUILD_SOVERSION_NUMBERS=2
+
+		-DBUILD_DOC_Overview="$(usex doc)"
+		-DBUILD_Inspector="$(usex gui)"
+
+		-DBUILD_ENABLE_FPE_SIGNAL_HANDLER="$(usex debug)"
+		-DBUILD_USE_PCH="no"
+		# -DBUILD_OPT_PROFILE="Default" # Production
+		# -DBUILD_RESOURCES="yes"
+		# -DBUILD_YACCLEX="yes"
+
+		-DBUILD_RELEASE_DISABLE_EXCEPTIONS="no" # bug #847916
+		-DINSTALL_DIR="${EPREFIX}/usr"
+		-DINSTALL_DIR_BIN="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_CMAKE="$(get_libdir)/cmake/${PN}"
+		-DINSTALL_DIR_DATA="share/${PN}/data"
+		-DINSTALL_DIR_DOC="share/doc/${PF}"
+		-DINSTALL_DIR_INCLUDE="include/${PN}"
+		-DINSTALL_DIR_LIB="$(get_libdir)/${PN}"
+		-DINSTALL_DIR_RESOURCE="share/${PN}/resources"
+		-DINSTALL_DIR_SAMPLES="share/${PN}/samples"
+		-DINSTALL_DIR_SCRIPT="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_TESTS="share/${PN}/tests"
+		-DINSTALL_DIR_WITH_VERSION="no"
+		-DINSTALL_SAMPLES="$(usex examples)"
+
+		-DINSTALL_TEST_CASES="$(usex testprograms)"
+
+		# no package yet in tree
+		-DUSE_DRACO="no"
+		-DUSE_FFMPEG="$(usex ffmpeg)"
+		-DUSE_FREEIMAGE="$(usex freeimage)"
+		-DUSE_FREETYPE="$(usex freetype)"
+		# Indicates whether OpenGL ES 2.0 should be used in OCCT visualization module
+		-DUSE_GLES2="$(usex gles2-only)"
+		# Indicates whether OpenGL desktop should be used in OCCT visualization module
+		-DUSE_OPENGL="$(usex opengl)"
+		# no package in tree
+		-DUSE_OPENVR="no"
+		-DUSE_RAPIDJSON="$(usex json)"
+		-DUSE_TBB="$(usex tbb)"
+		-DUSE_TK="$(usex tk)"
+		-DUSE_VTK="$(usex vtk)"
+		-DUSE_XLIB="$(usex X)"
+	)
+
+	# Select using memory manager tool.
+	if ! use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=NATIVE )
+	elif use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=JEMALLOC )
+	elif ! use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=TBB )
+	elif use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=FLEXIBLE )
+	fi
+
+	if use doc; then
+		mycmakeargs+=(
+			-DINSTALL_DOC_Overview="yes"
+			-D3RDPARTY_SKIP_DOT_EXECUTABLE="no"
+		)
+	fi
+
+	if use gui; then
+		mycmakeargs+=(
+			-D3RDPARTY_QT_DIR="${ESYSROOT}/usr"
+			-DBUILD_SAMPLES_QT="$(usex examples)"
+		)
+	fi
+
+	if use jemalloc; then
+		mycmakeargs+=(
+			-D3RDPARTY_JEMALLOC_INCLUDE_DIR="${ESYSROOT}/usr/include/jemalloc"
+		)
+	fi
+
+	if use tbb; then
+		mycmakeargs+=(
+			-D3RDPARTY_TBB_DIR="${ESYSROOT}/usr"
+		)
+	fi
+
+	if use vtk; then
+		local vtk_ver
+		vtk_ver="$(best_version "sci-libs/vtk")"
+		vtk_ver=$(ver_cut 1-2 "${vtk_ver#sci-libs/vtk-}")
+		mycmakeargs+=(
+			-D3RDPARTY_VTK_INCLUDE_DIR="${ESYSROOT}/usr/include/vtk-${vtk_ver}"
+			-D3RDPARTY_VTK_LIBRARY_DIR="${ESYSROOT}/usr/$(get_libdir)"
+		)
+	fi
+
+	cmake_src_configure
+
+	sed -e "s|lib/|$(get_libdir)/|" \
+		-e "s|VAR_CASROOT|${EPREFIX}/usr|" \
+		< "${FILESDIR}/${PN}.env.in" > "${T}/99${PN}" || die
+
+	# use TBB for memory allocation optimizations
+	if use tbb; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=2|' -i "${T}/99${PN}" || die
+	fi
+
+	# use internal optimized memory manager and don't clear memory with this
+	# memory manager.
+	if use optimize ; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=1|' \
+			-e 's|^#MMGT_CLEAR=1$|MMGT_CLEAR=0|' \
+			-i "${T}/99${PN}" || die
+	fi
+}
+
+src_test() {
+	echo "export CSF_OCCTDataPath=${WORKDIR}/data" >> "${BUILD_DIR}/custom.sh" || die
+
+	if has_version media-fonts/dejavu; then
+		cp "${ESYSROOT}/usr/share/fonts/dejavu/DejaVuSans.ttf" "${WORKDIR}/data/" # no die here as this isn't fatal
+	fi
+
+	local test_file=${T}/testscript.tcl
+
+	local draw_opts=(
+		i # see ${BUILD_DIR}/custom*.sh
+		# -b # batch mode (no GUI, no viewers)
+		-v # no GUI, use virtual (off-screen) windows for viewers
+	)
+
+	local test_names=(
+		"demo draw bug30430" # prone to dying due to cpu limit
+	)
+	local test_opts=( # run single tests
+		-overwrite
+	)
+	for test_name in "${test_names[@]}"; do
+		cat >> "${test_file}" <<- _EOF_ || die
+			test ${test_name} -outfile "${BUILD_DIR}/test_results/${test_name// /\/}.html" ${test_opts[@]}
+		_EOF_
+	done
+
+	local testgrid_opts=()
+
+	local SKIP_TESTS=()
+
+	if [[ "${OCCT_OPTIONAL_TESTS}" != "true" ]]; then
+		SKIP_TESTS+=(
+			'blend complex F4'
+			'bugs'
+			'geometry circ2d3Tan '{CircleCircleLin_11,CircleLinPoint_11}
+			'heal checkshape bug32448_1'
+			'hlr exact_hlr bug25813_2'
+
+			'hlr poly_hlr '{bug25813_2,bug25813_3,bug25813_4,Plate}
+			'lowalgos intss bug'{565,567_1,25950,27431,29807_i1003,29807_i2006,29807_i3003,29807_i5002,30703}
+			'lowalgos proximity '{A4,A5}
+			'opengl background bug27836'
+			'opengl drivers opengles'
+			'opengles3'
+
+			'demo draw bug30430'
+		)
+
+		local DEL_TESTS=(
+			'opengl/data/background/bug27836'
+			'perf/mesh/bug26965'
+			'v3d/trsf/bug26029'
+		)
+
+		for test in "${DEL_TESTS[@]}"; do
+			rm "${CMAKE_USE_DIR}/tests/${test}" || die
+		done
+	fi
+
+	if ! use vtk; then
+		SKIP_TESTS+=(
+			'vtk'
+		)
+		echo "IGNORE /Could not open: libTKIVtkDraw/skip VTK" >> "${CMAKE_USE_DIR}/tests/opengl/parse.rules"
+	fi
+
+	if [[ -n "${SKIP_TESTS[*]}" ]]; then
+		testgrid_opts+=( -exclude "$(IFS=',' ; echo "${SKIP_TESTS[*]}")" )
+	fi
+
+	testgrid_opts+=(
+		# -refresh 5
+		-overwrite
+	)
+	cat >> "${test_file}" <<- _EOF_ || die
+		testgrid -outdir "${BUILD_DIR}/test_results" ${testgrid_opts[@]}
+	_EOF_
+
+	# # regenerate summary in case we have to
+	# cat >> "${test_file}" <<- _EOF_ || die
+	# 	testsummarize "${BUILD_DIR}/test_results"
+	# _EOF_
+
+	# Work around zink warnings
+	export LIBGL_ALWAYS_SOFTWARE="true"
+
+	export CASROOT="${BUILD_DIR}"
+
+	virtx \
+	"${BUILD_DIR}/draw.sh" \
+		"${draw_opts[@]}" \
+		-f "${test_file}"
+
+	if [[ ! -f "${BUILD_DIR}/test_results/tests.log" ]]; then
+		eerror "tests never ran!"
+		die
+	fi
+	failed_tests="$(grep ": FAILED" "${BUILD_DIR}/test_results/tests.log")"
+	if [[ -n ${failed_tests} ]]; then
+		eerror "Failed tests:"
+		eerror "${failed_tests}"
+		die
+	fi
+}
+
+src_install() {
+	cmake_src_install
+
+	doenvd "${T}/99${PN}"
+
+	docompress -x "/usr/share/doc/${PF}/overview/html"
+}
diff --git a/sci-libs/opencascade/opencascade-7.8.0.ebuild b/sci-libs/opencascade/opencascade-7.8.0.ebuild
new file mode 100644
index 000000000000..2f819b1746e8
--- /dev/null
+++ b/sci-libs/opencascade/opencascade-7.8.0.ebuild
@@ -0,0 +1,365 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake virtualx
+
+DESCRIPTION="Development platform for CAD/CAE, 3D surface/solid modeling and data exchange"
+HOMEPAGE="https://www.opencascade.com"
+
+MY_PN="OCCT"
+
+MY_TEST_PV="7.8.0"
+MY_TEST_PV2="${MY_TEST_PV//./_}"
+
+SRC_URI="
+	test? ( https://github.com/Open-Cascade-SAS/${MY_PN}/releases/download/V${MY_TEST_PV2}/${PN}-dataset-${MY_TEST_PV}.tar.xz )
+"
+
+if [[ ${PV} = *9999* ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/Open-Cascade-SAS/${MY_PN}.git"
+else
+	MY_PV="${PV//./_}"
+	SRC_URI+="
+		https://github.com/Open-Cascade-SAS/${MY_PN}/archive/refs/tags/V${MY_PV}.tar.gz -> ${P}.tar.gz
+	"
+	S="${WORKDIR}/${MY_PN}-${MY_PV}"
+	KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86"
+fi
+
+LICENSE="|| ( Open-CASCADE-LGPL-2.1-Exception-1.0 LGPL-2.1 )"
+SLOT="0/$(ver_cut 1-2)"
+IUSE="X debug doc examples ffmpeg freeimage freetype gles2-only +gui jemalloc json +opengl optimize tbb test testprograms tk vtk"
+
+REQUIRED_USE="
+	?? ( optimize tbb )
+	?? ( opengl gles2-only )
+	test? ( freeimage json opengl )
+"
+
+# There's no easy way to test. Testing needs a rather big environment properly set up.
+RESTRICT="!test? ( test )"
+
+# ffmpeg: https://tracker.dev.opencascade.org/view.php?id=32871
+RDEPEND="
+	dev-lang/tcl:=
+	tk? ( dev-lang/tk:= )
+	dev-libs/double-conversion
+	freetype? (
+		media-libs/fontconfig
+		media-libs/freetype:2
+	)
+	opengl? (
+		media-libs/libglvnd
+	)
+	X? (
+		x11-libs/libX11
+	)
+	gui? (
+		examples? (
+			dev-qt/qtcore:5
+			dev-qt/qtgui:5
+			dev-qt/qtquickcontrols2:5
+			dev-qt/qtwidgets:5
+			dev-qt/qtxml:5
+		)
+	)
+	ffmpeg? ( <media-video/ffmpeg-5:= )
+	freeimage? ( media-libs/freeimage )
+	jemalloc? ( dev-libs/jemalloc )
+	tbb? ( dev-cpp/tbb:= )
+	vtk? (
+		sci-libs/vtk:=[rendering]
+		tbb? (
+			sci-libs/vtk:=[tbb,-cuda]
+		)
+	)
+"
+DEPEND="
+	${RDEPEND}
+	X? ( x11-base/xorg-proto )
+	json? ( dev-libs/rapidjson )
+"
+BDEPEND="
+	doc? ( app-text/doxygen[dot] )
+	gui? (
+		examples? ( dev-qt/linguist-tools:5 )
+	)
+	test? ( dev-tcltk/thread )
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-7.5.1-0005-fix-write-permissions-on-scripts.patch"
+	"${FILESDIR}/${PN}-7.5.1-0006-fix-creation-of-custom.sh-script.patch"
+	"${FILESDIR}/${PN}-7.7.0-fix-installation-of-cmake-config-files.patch"
+	"${FILESDIR}/${PN}-7.7.0-avoid-pre-stripping-binaries.patch"
+	"${FILESDIR}/${PN}-7.7.0-build-against-vtk-9.2.patch"
+	"${FILESDIR}/${PN}-7.7.0-musl.patch"
+	"${FILESDIR}/${PN}-7.7.0-jemalloc-lib-type.patch"
+	"${FILESDIR}/${PN}-7.8.0-cmake-min-version.patch"
+	"${FILESDIR}/${PN}-7.8.0-tests.patch"
+)
+
+src_unpack() {
+	if [[ ${PV} = *9999* ]] ; then
+		git-r3_src_unpack
+	else
+		unpack "${P}.tar.gz"
+	fi
+
+	if use test; then
+		mkdir "${WORKDIR}/data"
+		pushd "${WORKDIR}/data" > /dev/null || die
+		# should be in paths indicated by CSF_TestDataPath environment variable,
+		# or in subfolder data in the script directory
+		unpack "${PN}-dataset-${MY_TEST_PV}.tar.xz"
+		popd > /dev/null || die
+	fi
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	sed -e 's|/lib\$|/'"$(get_libdir)"'\$|' \
+		-i adm/templates/OpenCASCADEConfig.cmake.in || die
+
+	# There is an OCCT_UPDATE_TARGET_FILE cmake macro that fails due to some
+	# assumptions it makes about installation paths. Rather than fixing it, just
+	# get rid of the mechanism altogether - its purpose is to allow a
+	# side-by-side installation of release and debug libraries.
+	sed -e 's|\\${OCCT_INSTALL_BIN_LETTER}||' \
+		-i adm/cmake/occt_toolkit.cmake || die
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-D3RDPARTY_DIR="${ESYSROOT}/usr"
+		-DBUILD_CPP_STANDARD="C++17"
+		-DBUILD_SOVERSION_NUMBERS=2
+
+		-DBUILD_DOC_Overview="$(usex doc)"
+		-DBUILD_Inspector="$(usex gui)"
+
+		-DBUILD_ENABLE_FPE_SIGNAL_HANDLER="$(usex debug)"
+		-DBUILD_USE_PCH="no"
+		# -DBUILD_OPT_PROFILE="Default" # Production
+		# -DBUILD_RESOURCES="yes"
+		# -DBUILD_YACCLEX="yes"
+
+		-DBUILD_RELEASE_DISABLE_EXCEPTIONS="no" # bug #847916
+		-DINSTALL_DIR="${EPREFIX}/usr"
+		-DINSTALL_DIR_BIN="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_CMAKE="$(get_libdir)/cmake/${PN}"
+		-DINSTALL_DIR_DATA="share/${PN}/data"
+		-DINSTALL_DIR_DOC="share/doc/${PF}"
+		-DINSTALL_DIR_INCLUDE="include/${PN}"
+		-DINSTALL_DIR_LIB="$(get_libdir)/${PN}"
+		-DINSTALL_DIR_RESOURCE="share/${PN}/resources"
+		-DINSTALL_DIR_SAMPLES="share/${PN}/samples"
+		-DINSTALL_DIR_SCRIPT="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_TESTS="share/${PN}/tests"
+		-DINSTALL_DIR_WITH_VERSION="no"
+		-DINSTALL_SAMPLES="$(usex examples)"
+
+		-DINSTALL_TEST_CASES="$(usex testprograms)"
+
+		# no package yet in tree
+		-DUSE_DRACO="no"
+		-DUSE_FFMPEG="$(usex ffmpeg)"
+		-DUSE_FREEIMAGE="$(usex freeimage)"
+		-DUSE_FREETYPE="$(usex freetype)"
+		# Indicates whether OpenGL ES 2.0 should be used in OCCT visualization module
+		-DUSE_GLES2="$(usex gles2-only)"
+		# Indicates whether OpenGL desktop should be used in OCCT visualization module
+		-DUSE_OPENGL="$(usex opengl)"
+		# no package in tree
+		-DUSE_OPENVR="no"
+		-DUSE_RAPIDJSON="$(usex json)"
+		-DUSE_TBB="$(usex tbb)"
+		-DUSE_TK="$(usex tk)"
+		-DUSE_VTK="$(usex vtk)"
+		-DUSE_XLIB="$(usex X)"
+	)
+
+	# Select using memory manager tool.
+	if ! use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=NATIVE )
+	elif use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=JEMALLOC )
+	elif ! use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=TBB )
+	elif use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=FLEXIBLE )
+	fi
+
+	if use doc; then
+		mycmakeargs+=(
+			-DINSTALL_DOC_Overview="yes"
+			-D3RDPARTY_SKIP_DOT_EXECUTABLE="no"
+		)
+	fi
+
+	if use gui; then
+		mycmakeargs+=(
+			-D3RDPARTY_QT_DIR="${ESYSROOT}/usr"
+			-DBUILD_SAMPLES_QT="$(usex examples)"
+		)
+	fi
+
+	if use jemalloc; then
+		mycmakeargs+=(
+			-D3RDPARTY_JEMALLOC_INCLUDE_DIR="${ESYSROOT}/usr/include/jemalloc"
+		)
+	fi
+
+	if use tbb; then
+		mycmakeargs+=(
+			-D3RDPARTY_TBB_DIR="${ESYSROOT}/usr"
+		)
+	fi
+
+	if use vtk; then
+		local vtk_ver
+		vtk_ver="$(best_version "sci-libs/vtk")"
+		vtk_ver=$(ver_cut 1-2 "${vtk_ver#sci-libs/vtk-}")
+		mycmakeargs+=(
+			-D3RDPARTY_VTK_INCLUDE_DIR="${ESYSROOT}/usr/include/vtk-${vtk_ver}"
+			-D3RDPARTY_VTK_LIBRARY_DIR="${ESYSROOT}/usr/$(get_libdir)"
+		)
+	fi
+
+	cmake_src_configure
+
+	sed -e "s|lib/|$(get_libdir)/|" \
+		-e "s|VAR_CASROOT|${EPREFIX}/usr|" \
+		< "${FILESDIR}/${PN}.env.in" > "${T}/99${PN}" || die
+
+	# use TBB for memory allocation optimizations
+	if use tbb; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=2|' -i "${T}/99${PN}" || die
+	fi
+
+	# use internal optimized memory manager and don't clear memory with this
+	# memory manager.
+	if use optimize ; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=1|' \
+			-e 's|^#MMGT_CLEAR=1$|MMGT_CLEAR=0|' \
+			-i "${T}/99${PN}" || die
+	fi
+}
+
+src_test() {
+	echo "export CSF_OCCTDataPath=${WORKDIR}/data" >> "${BUILD_DIR}/custom.sh" || die
+
+	if has_version media-fonts/dejavu; then
+		cp "${ESYSROOT}/usr/share/fonts/dejavu/DejaVuSans.ttf" "${WORKDIR}/data/" # no die here as this isn't fatal
+	fi
+
+	local test_file=${T}/testscript.tcl
+
+	local draw_opts=(
+		i # see ${BUILD_DIR}/custom*.sh
+		# -b # batch mode (no GUI, no viewers)
+		-v # no GUI, use virtual (off-screen) windows for viewers
+	)
+
+	local test_names=(
+		"demo draw bug30430" # prone to dying due to cpu limit
+	)
+	local test_opts=( # run single tests
+		-overwrite
+	)
+	for test_name in "${test_names[@]}"; do
+		cat >> "${test_file}" <<- _EOF_ || die
+			test ${test_name} -outfile "${BUILD_DIR}/test_results/${test_name// /\/}.html" ${test_opts[@]}
+		_EOF_
+	done
+
+	local testgrid_opts=()
+
+	local SKIP_TESTS=()
+
+	if [[ "${OCCT_OPTIONAL_TESTS}" != "true" ]]; then
+		SKIP_TESTS+=(
+			'blend complex F4'
+			'bugs'
+			'geometry circ2d3Tan '{CircleCircleLin_11,CircleLinPoint_11}
+			'heal checkshape bug32448_1'
+			'hlr exact_hlr bug25813_2'
+
+			'hlr poly_hlr '{bug25813_2,bug25813_3,bug25813_4,Plate}
+			'lowalgos intss bug'{565,567_1,25950,27431,29807_i1003,29807_i2006,29807_i3003,29807_i5002,30703}
+			'lowalgos proximity '{A4,A5}
+			'opengl background bug27836'
+			'opengl drivers opengles'
+			'opengles3'
+
+			'demo draw bug30430'
+		)
+
+		local DEL_TESTS=(
+			'opengl/data/background/bug27836'
+			'perf/mesh/bug26965'
+			'v3d/trsf/bug26029'
+		)
+
+		for test in "${DEL_TESTS[@]}"; do
+			rm "${CMAKE_USE_DIR}/tests/${test}" || die
+		done
+	fi
+
+	if ! use vtk; then
+		SKIP_TESTS+=(
+			'vtk'
+		)
+		echo "IGNORE /Could not open: libTKIVtkDraw/skip VTK" >> "${CMAKE_USE_DIR}/tests/opengl/parse.rules"
+	fi
+
+	if [[ -n "${SKIP_TESTS[*]}" ]]; then
+		testgrid_opts+=( -exclude "$(IFS=',' ; echo "${SKIP_TESTS[*]}")" )
+	fi
+
+	testgrid_opts+=(
+		# -refresh 5
+		-overwrite
+	)
+	cat >> "${test_file}" <<- _EOF_ || die
+		testgrid -outdir "${BUILD_DIR}/test_results" ${testgrid_opts[@]}
+	_EOF_
+
+	# # regenerate summary in case we have to
+	# cat >> "${test_file}" <<- _EOF_ || die
+	# 	testsummarize "${BUILD_DIR}/test_results"
+	# _EOF_
+
+	# Work around zink warnings
+	export LIBGL_ALWAYS_SOFTWARE="true"
+
+	export CASROOT="${BUILD_DIR}"
+
+	virtx \
+	"${BUILD_DIR}/draw.sh" \
+		"${draw_opts[@]}" \
+		-f "${test_file}"
+
+	if [[ ! -f "${BUILD_DIR}/test_results/tests.log" ]]; then
+		eerror "tests never ran!"
+		die
+	fi
+	failed_tests="$(grep ": FAILED" "${BUILD_DIR}/test_results/tests.log")"
+	if [[ -n ${failed_tests} ]]; then
+		eerror "Failed tests:"
+		eerror "${failed_tests}"
+		die
+	fi
+}
+
+src_install() {
+	cmake_src_install
+
+	doenvd "${T}/99${PN}"
+
+	docompress -x "/usr/share/doc/${PF}/overview/html"
+}
diff --git a/sci-libs/opencascade/opencascade-9999.ebuild b/sci-libs/opencascade/opencascade-9999.ebuild
new file mode 100644
index 000000000000..2f819b1746e8
--- /dev/null
+++ b/sci-libs/opencascade/opencascade-9999.ebuild
@@ -0,0 +1,365 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake virtualx
+
+DESCRIPTION="Development platform for CAD/CAE, 3D surface/solid modeling and data exchange"
+HOMEPAGE="https://www.opencascade.com"
+
+MY_PN="OCCT"
+
+MY_TEST_PV="7.8.0"
+MY_TEST_PV2="${MY_TEST_PV//./_}"
+
+SRC_URI="
+	test? ( https://github.com/Open-Cascade-SAS/${MY_PN}/releases/download/V${MY_TEST_PV2}/${PN}-dataset-${MY_TEST_PV}.tar.xz )
+"
+
+if [[ ${PV} = *9999* ]] ; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/Open-Cascade-SAS/${MY_PN}.git"
+else
+	MY_PV="${PV//./_}"
+	SRC_URI+="
+		https://github.com/Open-Cascade-SAS/${MY_PN}/archive/refs/tags/V${MY_PV}.tar.gz -> ${P}.tar.gz
+	"
+	S="${WORKDIR}/${MY_PN}-${MY_PV}"
+	KEYWORDS="~amd64 ~arm ~arm64 ~riscv ~x86"
+fi
+
+LICENSE="|| ( Open-CASCADE-LGPL-2.1-Exception-1.0 LGPL-2.1 )"
+SLOT="0/$(ver_cut 1-2)"
+IUSE="X debug doc examples ffmpeg freeimage freetype gles2-only +gui jemalloc json +opengl optimize tbb test testprograms tk vtk"
+
+REQUIRED_USE="
+	?? ( optimize tbb )
+	?? ( opengl gles2-only )
+	test? ( freeimage json opengl )
+"
+
+# There's no easy way to test. Testing needs a rather big environment properly set up.
+RESTRICT="!test? ( test )"
+
+# ffmpeg: https://tracker.dev.opencascade.org/view.php?id=32871
+RDEPEND="
+	dev-lang/tcl:=
+	tk? ( dev-lang/tk:= )
+	dev-libs/double-conversion
+	freetype? (
+		media-libs/fontconfig
+		media-libs/freetype:2
+	)
+	opengl? (
+		media-libs/libglvnd
+	)
+	X? (
+		x11-libs/libX11
+	)
+	gui? (
+		examples? (
+			dev-qt/qtcore:5
+			dev-qt/qtgui:5
+			dev-qt/qtquickcontrols2:5
+			dev-qt/qtwidgets:5
+			dev-qt/qtxml:5
+		)
+	)
+	ffmpeg? ( <media-video/ffmpeg-5:= )
+	freeimage? ( media-libs/freeimage )
+	jemalloc? ( dev-libs/jemalloc )
+	tbb? ( dev-cpp/tbb:= )
+	vtk? (
+		sci-libs/vtk:=[rendering]
+		tbb? (
+			sci-libs/vtk:=[tbb,-cuda]
+		)
+	)
+"
+DEPEND="
+	${RDEPEND}
+	X? ( x11-base/xorg-proto )
+	json? ( dev-libs/rapidjson )
+"
+BDEPEND="
+	doc? ( app-text/doxygen[dot] )
+	gui? (
+		examples? ( dev-qt/linguist-tools:5 )
+	)
+	test? ( dev-tcltk/thread )
+"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-7.5.1-0005-fix-write-permissions-on-scripts.patch"
+	"${FILESDIR}/${PN}-7.5.1-0006-fix-creation-of-custom.sh-script.patch"
+	"${FILESDIR}/${PN}-7.7.0-fix-installation-of-cmake-config-files.patch"
+	"${FILESDIR}/${PN}-7.7.0-avoid-pre-stripping-binaries.patch"
+	"${FILESDIR}/${PN}-7.7.0-build-against-vtk-9.2.patch"
+	"${FILESDIR}/${PN}-7.7.0-musl.patch"
+	"${FILESDIR}/${PN}-7.7.0-jemalloc-lib-type.patch"
+	"${FILESDIR}/${PN}-7.8.0-cmake-min-version.patch"
+	"${FILESDIR}/${PN}-7.8.0-tests.patch"
+)
+
+src_unpack() {
+	if [[ ${PV} = *9999* ]] ; then
+		git-r3_src_unpack
+	else
+		unpack "${P}.tar.gz"
+	fi
+
+	if use test; then
+		mkdir "${WORKDIR}/data"
+		pushd "${WORKDIR}/data" > /dev/null || die
+		# should be in paths indicated by CSF_TestDataPath environment variable,
+		# or in subfolder data in the script directory
+		unpack "${PN}-dataset-${MY_TEST_PV}.tar.xz"
+		popd > /dev/null || die
+	fi
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	sed -e 's|/lib\$|/'"$(get_libdir)"'\$|' \
+		-i adm/templates/OpenCASCADEConfig.cmake.in || die
+
+	# There is an OCCT_UPDATE_TARGET_FILE cmake macro that fails due to some
+	# assumptions it makes about installation paths. Rather than fixing it, just
+	# get rid of the mechanism altogether - its purpose is to allow a
+	# side-by-side installation of release and debug libraries.
+	sed -e 's|\\${OCCT_INSTALL_BIN_LETTER}||' \
+		-i adm/cmake/occt_toolkit.cmake || die
+}
+
+src_configure() {
+	local mycmakeargs=(
+		-D3RDPARTY_DIR="${ESYSROOT}/usr"
+		-DBUILD_CPP_STANDARD="C++17"
+		-DBUILD_SOVERSION_NUMBERS=2
+
+		-DBUILD_DOC_Overview="$(usex doc)"
+		-DBUILD_Inspector="$(usex gui)"
+
+		-DBUILD_ENABLE_FPE_SIGNAL_HANDLER="$(usex debug)"
+		-DBUILD_USE_PCH="no"
+		# -DBUILD_OPT_PROFILE="Default" # Production
+		# -DBUILD_RESOURCES="yes"
+		# -DBUILD_YACCLEX="yes"
+
+		-DBUILD_RELEASE_DISABLE_EXCEPTIONS="no" # bug #847916
+		-DINSTALL_DIR="${EPREFIX}/usr"
+		-DINSTALL_DIR_BIN="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_CMAKE="$(get_libdir)/cmake/${PN}"
+		-DINSTALL_DIR_DATA="share/${PN}/data"
+		-DINSTALL_DIR_DOC="share/doc/${PF}"
+		-DINSTALL_DIR_INCLUDE="include/${PN}"
+		-DINSTALL_DIR_LIB="$(get_libdir)/${PN}"
+		-DINSTALL_DIR_RESOURCE="share/${PN}/resources"
+		-DINSTALL_DIR_SAMPLES="share/${PN}/samples"
+		-DINSTALL_DIR_SCRIPT="$(get_libdir)/${PN}/bin"
+		-DINSTALL_DIR_TESTS="share/${PN}/tests"
+		-DINSTALL_DIR_WITH_VERSION="no"
+		-DINSTALL_SAMPLES="$(usex examples)"
+
+		-DINSTALL_TEST_CASES="$(usex testprograms)"
+
+		# no package yet in tree
+		-DUSE_DRACO="no"
+		-DUSE_FFMPEG="$(usex ffmpeg)"
+		-DUSE_FREEIMAGE="$(usex freeimage)"
+		-DUSE_FREETYPE="$(usex freetype)"
+		# Indicates whether OpenGL ES 2.0 should be used in OCCT visualization module
+		-DUSE_GLES2="$(usex gles2-only)"
+		# Indicates whether OpenGL desktop should be used in OCCT visualization module
+		-DUSE_OPENGL="$(usex opengl)"
+		# no package in tree
+		-DUSE_OPENVR="no"
+		-DUSE_RAPIDJSON="$(usex json)"
+		-DUSE_TBB="$(usex tbb)"
+		-DUSE_TK="$(usex tk)"
+		-DUSE_VTK="$(usex vtk)"
+		-DUSE_XLIB="$(usex X)"
+	)
+
+	# Select using memory manager tool.
+	if ! use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=NATIVE )
+	elif use jemalloc && ! use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=JEMALLOC )
+	elif ! use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=TBB )
+	elif use jemalloc && use tbb; then
+		mycmakeargs+=( -DUSE_MMGR_TYPE=FLEXIBLE )
+	fi
+
+	if use doc; then
+		mycmakeargs+=(
+			-DINSTALL_DOC_Overview="yes"
+			-D3RDPARTY_SKIP_DOT_EXECUTABLE="no"
+		)
+	fi
+
+	if use gui; then
+		mycmakeargs+=(
+			-D3RDPARTY_QT_DIR="${ESYSROOT}/usr"
+			-DBUILD_SAMPLES_QT="$(usex examples)"
+		)
+	fi
+
+	if use jemalloc; then
+		mycmakeargs+=(
+			-D3RDPARTY_JEMALLOC_INCLUDE_DIR="${ESYSROOT}/usr/include/jemalloc"
+		)
+	fi
+
+	if use tbb; then
+		mycmakeargs+=(
+			-D3RDPARTY_TBB_DIR="${ESYSROOT}/usr"
+		)
+	fi
+
+	if use vtk; then
+		local vtk_ver
+		vtk_ver="$(best_version "sci-libs/vtk")"
+		vtk_ver=$(ver_cut 1-2 "${vtk_ver#sci-libs/vtk-}")
+		mycmakeargs+=(
+			-D3RDPARTY_VTK_INCLUDE_DIR="${ESYSROOT}/usr/include/vtk-${vtk_ver}"
+			-D3RDPARTY_VTK_LIBRARY_DIR="${ESYSROOT}/usr/$(get_libdir)"
+		)
+	fi
+
+	cmake_src_configure
+
+	sed -e "s|lib/|$(get_libdir)/|" \
+		-e "s|VAR_CASROOT|${EPREFIX}/usr|" \
+		< "${FILESDIR}/${PN}.env.in" > "${T}/99${PN}" || die
+
+	# use TBB for memory allocation optimizations
+	if use tbb; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=2|' -i "${T}/99${PN}" || die
+	fi
+
+	# use internal optimized memory manager and don't clear memory with this
+	# memory manager.
+	if use optimize ; then
+		sed -e 's|^#MMGT_OPT=0$|MMGT_OPT=1|' \
+			-e 's|^#MMGT_CLEAR=1$|MMGT_CLEAR=0|' \
+			-i "${T}/99${PN}" || die
+	fi
+}
+
+src_test() {
+	echo "export CSF_OCCTDataPath=${WORKDIR}/data" >> "${BUILD_DIR}/custom.sh" || die
+
+	if has_version media-fonts/dejavu; then
+		cp "${ESYSROOT}/usr/share/fonts/dejavu/DejaVuSans.ttf" "${WORKDIR}/data/" # no die here as this isn't fatal
+	fi
+
+	local test_file=${T}/testscript.tcl
+
+	local draw_opts=(
+		i # see ${BUILD_DIR}/custom*.sh
+		# -b # batch mode (no GUI, no viewers)
+		-v # no GUI, use virtual (off-screen) windows for viewers
+	)
+
+	local test_names=(
+		"demo draw bug30430" # prone to dying due to cpu limit
+	)
+	local test_opts=( # run single tests
+		-overwrite
+	)
+	for test_name in "${test_names[@]}"; do
+		cat >> "${test_file}" <<- _EOF_ || die
+			test ${test_name} -outfile "${BUILD_DIR}/test_results/${test_name// /\/}.html" ${test_opts[@]}
+		_EOF_
+	done
+
+	local testgrid_opts=()
+
+	local SKIP_TESTS=()
+
+	if [[ "${OCCT_OPTIONAL_TESTS}" != "true" ]]; then
+		SKIP_TESTS+=(
+			'blend complex F4'
+			'bugs'
+			'geometry circ2d3Tan '{CircleCircleLin_11,CircleLinPoint_11}
+			'heal checkshape bug32448_1'
+			'hlr exact_hlr bug25813_2'
+
+			'hlr poly_hlr '{bug25813_2,bug25813_3,bug25813_4,Plate}
+			'lowalgos intss bug'{565,567_1,25950,27431,29807_i1003,29807_i2006,29807_i3003,29807_i5002,30703}
+			'lowalgos proximity '{A4,A5}
+			'opengl background bug27836'
+			'opengl drivers opengles'
+			'opengles3'
+
+			'demo draw bug30430'
+		)
+
+		local DEL_TESTS=(
+			'opengl/data/background/bug27836'
+			'perf/mesh/bug26965'
+			'v3d/trsf/bug26029'
+		)
+
+		for test in "${DEL_TESTS[@]}"; do
+			rm "${CMAKE_USE_DIR}/tests/${test}" || die
+		done
+	fi
+
+	if ! use vtk; then
+		SKIP_TESTS+=(
+			'vtk'
+		)
+		echo "IGNORE /Could not open: libTKIVtkDraw/skip VTK" >> "${CMAKE_USE_DIR}/tests/opengl/parse.rules"
+	fi
+
+	if [[ -n "${SKIP_TESTS[*]}" ]]; then
+		testgrid_opts+=( -exclude "$(IFS=',' ; echo "${SKIP_TESTS[*]}")" )
+	fi
+
+	testgrid_opts+=(
+		# -refresh 5
+		-overwrite
+	)
+	cat >> "${test_file}" <<- _EOF_ || die
+		testgrid -outdir "${BUILD_DIR}/test_results" ${testgrid_opts[@]}
+	_EOF_
+
+	# # regenerate summary in case we have to
+	# cat >> "${test_file}" <<- _EOF_ || die
+	# 	testsummarize "${BUILD_DIR}/test_results"
+	# _EOF_
+
+	# Work around zink warnings
+	export LIBGL_ALWAYS_SOFTWARE="true"
+
+	export CASROOT="${BUILD_DIR}"
+
+	virtx \
+	"${BUILD_DIR}/draw.sh" \
+		"${draw_opts[@]}" \
+		-f "${test_file}"
+
+	if [[ ! -f "${BUILD_DIR}/test_results/tests.log" ]]; then
+		eerror "tests never ran!"
+		die
+	fi
+	failed_tests="$(grep ": FAILED" "${BUILD_DIR}/test_results/tests.log")"
+	if [[ -n ${failed_tests} ]]; then
+		eerror "Failed tests:"
+		eerror "${failed_tests}"
+		die
+	fi
+}
+
+src_install() {
+	cmake_src_install
+
+	doenvd "${T}/99${PN}"
+
+	docompress -x "/usr/share/doc/${PF}/overview/html"
+}