sys-devel/DPC++: new package, add 2022.09

See-also: https://github.com/gentoo/sci/pull/1040
Signed-off-by: Andrew Ammerlaan <andrewammerlaan@gentoo.org>

4 files changed, 412 insertions, 0 deletions

diff --git a/sys-devel/DPC++/DPC++-2022.09.ebuild b/sys-devel/DPC++/DPC++-2022.09.ebuild
new file mode 100644
index 000000000..fc7ebb76d
--- /dev/null
+++ b/sys-devel/DPC++/DPC++-2022.09.ebuild
@@ -0,0 +1,176 @@
+# Copyright 2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+inherit cmake python-any-r1
+DOCS_BUILDER="doxygen"
+DOCS_DIR="build/docs"
+DOCS_CONFIG_NAME="doxygen.cfg"
+DOCS_DEPEND="
+	media-gfx/graphviz
+	virtual/latex-base
+	$(python_gen_any_dep '
+		dev-python/sphinx[${PYTHON_USEDEP}]
+		dev-python/recommonmark[${PYTHON_USEDEP}]
+		dev-python/myst_parser[${PYTHON_USEDEP}]
+	')
+"
+inherit docs
+
+# We cannot unbundle this because it has to be compiled with the clang/llvm
+# that we are building here. Otherwise we run into problems running the compiler.
+CPU_EMUL_PV="2022-08-22"
+VC_INTR_PV="0.8.1" # Newer versions cause compile failure
+
+DESCRIPTION="oneAPI Data Parallel C++ compiler"
+HOMEPAGE="https://github.com/intel/llvm"
+SRC_URI="
+	https://github.com/intel/llvm/archive/refs/tags/${PV//./-}.tar.gz -> ${P}.tar.gz
+	https://github.com/intel/vc-intrinsics/archive/refs/tags/v${VC_INTR_PV}.tar.gz -> ${P}-vc-intrinsics-${VC_INTR_PV}.tar.gz
+	esimd_emulator? ( https://github.com/intel/cm-cpu-emulation/archive/refs/tags/v${CPU_EMUL_PV}.tar.gz -> ${P}-cm-cpu-emulation-${CPU_EMUL_PV}.tar.gz )
+"
+S="${WORKDIR}/llvm-${PV//./-}"
+CMAKE_USE_DIR="${S}/llvm"
+BUILD_DIR="${S}/build"
+
+LICENSE="Apache-2.0 MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM AVR BPF Hexagon Lanai Mips MSP430
+	NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+IUSE="cuda hip test esimd_emulator ${ALL_LLVM_TARGETS[*]}"
+REQUIRED_USE="
+	?? ( cuda hip )
+	cuda? ( llvm_targets_NVPTX )
+	hip? ( llvm_targets_AMDGPU )
+"
+RESTRICT="!test? ( test )"
+
+BDEPEND="virtual/pkgconfig"
+
+DEPEND="
+	dev-libs/boost:=
+	dev-libs/level-zero:=
+	dev-libs/opencl-icd-loader
+	dev-util/opencl-headers
+	dev-util/spirv-headers
+	dev-util/spirv-tools
+	media-libs/libva
+	sys-devel/libtool
+	esimd_emulator? ( dev-libs/libffi:= )
+	cuda? ( dev-util/nvidia-cuda-toolkit:= )
+	hip? ( dev-util/hip:= )
+"
+RDEPEND="${DEPEND}"
+
+PATCHES=(
+	"${FILESDIR}/${P}-system-libs.patch"
+)
+
+src_configure() {
+	# Extracted from buildbot/configure.py
+	local mycmakeargs=(
+		-DLLVM_ENABLE_ASSERTIONS=ON
+		-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
+		-DLLVM_EXTERNAL_PROJECTS="sycl;llvm-spirv;opencl;libdevice;xpti;xptifw"
+		-DLLVM_EXTERNAL_SYCL_SOURCE_DIR="${S}/sycl"
+		-DLLVM_EXTERNAL_LLVM_SPIRV_SOURCE_DIR="${S}/llvm-spirv"
+		-DLLVM_EXTERNAL_XPTI_SOURCE_DIR="${S}/xpti"
+		-DXPTI_SOURCE_DIR="${S}/xpti"
+		-DLLVM_EXTERNAL_XPTIFW_SOURCE_DIR="${S}/xptifw"
+		-DLLVM_EXTERNAL_LIBDEVICE_SOURCE_DIR="${S}/libdevice"
+		-DLLVM_ENABLE_PROJECTS="clang;sycl;llvm-spirv;opencl;libdevice;xpti;xptifw"
+		-DLLVM_BUILD_TOOLS=ON
+		-DSYCL_ENABLE_WERROR=OFF
+		-DSYCL_INCLUDE_TESTS="$(usex test)"
+		-DCLANG_INCLUDE_TESTS="$(usex test)"
+		-DLLVM_INCLUDE_TESTS="$(usex test)"
+		-DLLVM_SPIRV_INCLUDE_TESTS="$(usex test)"
+		-DLLVM_ENABLE_DOXYGEN="$(usex doc)"
+		-DLLVM_ENABLE_SPHINX="$(usex doc)"
+		-DLLVM_BUILD_DOCS="$(usex doc)"
+		-DSYCL_ENABLE_XPTI_TRACING=ON
+		-DLLVM_ENABLE_LLD=OFF
+		-DXPTI_ENABLE_WERROR=OFF
+		-DSYCL_ENABLE_PLUGINS="level_zero;opencl;$(usev esimd_emulator);$(usev hip);$(usev cuda)"
+		-DLLVM_EXTERNAL_SPIRV_HEADERS_SOURCE_DIR="${ESYSROOT}/usr"
+		-DBOOST_MP11_SOURCE_DIR="${ESYSROOT}/usr "
+		-DLEVEL_ZERO_LIBRARY="${ESYSROOT}/usr/lib64/libze_loader.so"
+		-DLEVEL_ZERO_INCLUDE_DIR="${ESYSROOT}/usr/include"
+		-DLLVMGenXIntrinsics_SOURCE_DIR="${WORKDIR}/vc-intrinsics-${VC_INTR_PV}"
+		-DSYCL_CLANG_EXTRA_FLAGS="${CXXFLAGS}"
+		# The sycl part of the build system insists on installing during compiling
+		# Install it to some temporary directory
+		-DCMAKE_INSTALL_PREFIX="${BUILD_DIR}/install"
+		-DCMAKE_INSTALL_MANDIR="${BUILD_DIR}/install/share/man"
+		-DCMAKE_INSTALL_INFODIR="${BUILD_DIR}/install/share/info"
+		-DCMAKE_INSTALL_DOCDIR="${BUILD_DIR}/install/share/doc/${PF}"
+	)
+
+	if use hip; then
+		mycmakeargs+=(
+			-DSYCL_BUILD_PI_HIP_PLATFORM=AMD
+			-DLIBCLC_GENERATE_REMANGLED_VARIANTS=ON
+			-DLIBCLC_TARGETS_TO_BUILD=";amdgcn--;amdgcn--amdhsa"
+		)
+	fi
+
+	if use cuda; then
+		mycmakeargs+=(
+			-DLIBCLC_GENERATE_REMANGLED_VARIANTS=ON
+			-DLIBCLC_TARGETS_TO_BUILD=";nvptx64--;nvptx64--nvidiacl"
+		)
+	fi
+
+	if use esimd_emulator; then
+		mycmakeargs+=(
+			-DLibFFI_INCLUDE_DIR="${ESYSROOT}/usr/lib64/libffi/include"
+			-DUSE_LOCAL_CM_EMU_SOURCE="${WORKDIR}/cm-cpu-emulation-${CPU_EMUL_PV}"
+		)
+	fi
+
+	if use doc; then
+		mycmakeargs+=( -DSPHINX_WARNINGS_AS_ERRORS=OFF )
+	fi
+
+	cmake_src_configure
+}
+
+src_compile() {
+	# Build sycl (this also installs some stuff already)
+	cmake_build deploy-sycl-toolchain
+
+	use doc && cmake_build doxygen-sycl
+
+	# Install all other files into the same temporary directory
+	cmake_build install
+}
+
+src_test() {
+	cmake_build check
+}
+
+src_install() {
+	einstalldocs
+
+	local LLVM_INTEL_DIR="/usr/lib/llvm/intel"
+	dodir "${LLVM_INTEL_DIR}"
+
+	# Copy our temporary directory to the image directory
+	mv "${BUILD_DIR}/install"/* "${ED}/${LLVM_INTEL_DIR}" || die
+
+	# Copied from llvm ebuild, put env file last so we don't overwrite main llvm/clang
+	newenvd - "60llvm-intel" <<-_EOF_
+		PATH="${EPREFIX}${LLVM_INTEL_DIR}/bin"
+		# we need to duplicate it in ROOTPATH for Portage to respect...
+		ROOTPATH="${EPREFIX}${LLVM_INTEL_DIR}/bin"
+		MANPATH="${EPREFIX}${LLVM_INTEL_DIR}/share/man"
+		LDPATH="${EPREFIX}${LLVM_INTEL_DIR}/lib:${EPREFIX}${LLVM_INTEL_DIR}/lib64"
+	_EOF_
+}
diff --git a/sys-devel/DPC++/Manifest b/sys-devel/DPC++/Manifest
new file mode 100644
index 000000000..9527a6642
--- /dev/null
+++ b/sys-devel/DPC++/Manifest
@@ -0,0 +1,3 @@
+DIST DPC++-2022.09-cm-cpu-emulation-2022-08-22.tar.gz 328563 BLAKE2B 86dfbf9163e77675227eb1db2242edf0de6e3f6be45ddfc1077d4cfb83e997f4839f2abb4e15688f4e657c263a0102d7fda627d6c57f1bcc2582560f3fdb5664 SHA512 fabd973739c17c3c702d8ea1345df165a272053fe7c6564fb81f00a3a316e1ed69d4fdbd73f408841600cf9705e31fc688c6d88e7b095e8f97b1090b3ecd8ccc
+DIST DPC++-2022.09-vc-intrinsics-0.8.1.tar.gz 138462 BLAKE2B 0f86f5fbeb7931a564eb598d527fd67e96489d0f2e7dba7166ffa468470022eff05e150877c3dd380ad003beb8651a0ac9ffe9c3dceeae6552c46b5f3e00aa64 SHA512 9763f1b624121694d6880ca3ffdf2e344ce3ed1a39c1c1e7dc06195b79acccce5e3d86032bba5c0de440376821c383f8ff59fdd57b0ae93fede17595b0fe0b42
+DIST DPC++-2022.09.tar.gz 171848301 BLAKE2B 48f57fee53370135b25a4e5f27926375fe9e4b707909f5841afa4c0d27a53932404f066db6384b8e8c327f1328cd00339e1c055935eb38fca2a8ce34f3556727 SHA512 f17ac91d4ec03c067595abd8355a54484c2cd8b79bb8b1ed8c90fabd8d83b73cce0271a8b3aa26e2c92e8083a2b3cf145c7e78b68e568c3cb036c80b8a4f9e12
diff --git a/sys-devel/DPC++/files/DPC++-2022.09-system-libs.patch b/sys-devel/DPC++/files/DPC++-2022.09-system-libs.patch
new file mode 100644
index 000000000..7d2cdc823
--- /dev/null
+++ b/sys-devel/DPC++/files/DPC++-2022.09-system-libs.patch
@@ -0,0 +1,217 @@
+diff --git a/opencl/CMakeLists.txt b/opencl/CMakeLists.txt
+index 954317fe2..ba3bf19d3 100644
+--- a/opencl/CMakeLists.txt
++++ b/opencl/CMakeLists.txt
+@@ -23,29 +23,8 @@ set(OCL_LOADER_REPO
+ set(OCL_HEADERS_TAG dcd5bede6859d26833cd85f0d6bbcee7382dc9b3)
+ set(OCL_LOADER_TAG 792682ad3d877ab38573b997808bab3b43902b70)
+ 
+-# OpenCL Headers
+-if(NOT OpenCL_HEADERS)
+-  message(STATUS "Will fetch OpenCL headers from ${OCL_HEADERS_REPO}")
+-
+-  FetchContent_Declare(ocl-headers
+-    GIT_REPOSITORY    ${OCL_HEADERS_REPO}
+-    GIT_TAG           ${OCL_HEADERS_TAG}
+-  )
+-else()
+-  message(STATUS "OpenCL headers are added manually ${OpenCL_HEADERS}")
+-
+-  FetchContent_Declare(ocl-headers
+-    URL               ${OpenCL_HEADERS}
+-  )
+-endif()
+-
+-FetchContent_MakeAvailable(ocl-headers)
+-FetchContent_GetProperties(ocl-headers)
+ set(OpenCL_INCLUDE_DIR
+-  ${ocl-headers_SOURCE_DIR} CACHE PATH "Path to OpenCL Headers")
+-
+-target_compile_definitions(Headers INTERFACE -DCL_TARGET_OPENCL_VERSION=220)
+-add_library(OpenCL-Headers ALIAS Headers)
++  /usr/include CACHE PATH "Path to OpenCL Headers")
+ 
+ # OpenCL Library (ICD Loader)
+ 
+@@ -57,25 +36,4 @@ set(OPENCL_ICD_LOADER_HEADERS_DIR
+ # library.
+ set(BUILD_SHARED_LIBS ON)
+ 
+-if(NOT OpenCL_LIBRARY_SRC)
+-  message(STATUS "Will fetch OpenCL ICD Loader from ${OCL_LOADER_REPO}")
+-
+-  FetchContent_Declare(ocl-icd
+-    GIT_REPOSITORY    ${OCL_LOADER_REPO}
+-    GIT_TAG           ${OCL_LOADER_TAG}
+-  )
+-else()
+-  # TODO: add possibility to use prebuilt OpenCL library rather than building
+-  #       together with llvm.
+-  message(STATUS
+-    "OpenCL ICD Loader sources added manually ${OpenCL_LIBRARY_SRC}")
+-
+-  FetchContent_Declare(ocl-icd
+-    URL               ${OpenCL_LIBRARY_SRC}
+-  )
+-endif()
+-
+-FetchContent_MakeAvailable(ocl-icd)
+-add_library(OpenCL-ICD ALIAS OpenCL)
+-
+ add_subdirectory(opencl-aot)
+diff --git a/opencl/opencl-aot/CMakeLists.txt b/opencl/opencl-aot/CMakeLists.txt
+index ff905fd88..b673f79a4 100644
+--- a/opencl/opencl-aot/CMakeLists.txt
++++ b/opencl/opencl-aot/CMakeLists.txt
+@@ -19,5 +19,5 @@ endif()
+ 
+ target_link_libraries(${OPENCL_AOT_PROJECT_NAME}
+   PRIVATE
+-    OpenCL-Headers
+-    OpenCL-ICD)
++    OpenCL
++)
+diff --git a/sycl/cmake/modules/AddSYCL.cmake b/sycl/cmake/modules/AddSYCL.cmake
+index aa0cfcadd..9cfa5aadd 100644
+--- a/sycl/cmake/modules/AddSYCL.cmake
++++ b/sycl/cmake/modules/AddSYCL.cmake
+@@ -47,7 +47,7 @@ function(add_sycl_plugin PLUGIN_NAME)
+       ${sycl_inc_dir}
+     LIBRARIES
+       ${ARG_LIBRARIES}
+-      OpenCL-Headers
++      OpenCL
+   )
+ 
+   install(TARGETS pi_${PLUGIN_NAME}
+diff --git a/sycl/cmake/modules/AddSYCLUnitTest.cmake b/sycl/cmake/modules/AddSYCLUnitTest.cmake
+index 9f5e6dc30..fe0e18b2f 100644
+--- a/sycl/cmake/modules/AddSYCLUnitTest.cmake
++++ b/sycl/cmake/modules/AddSYCLUnitTest.cmake
+@@ -53,7 +53,7 @@ macro(add_sycl_unittest test_dirname link_variant)
+   target_link_libraries(${test_dirname}
+     PRIVATE
+       LLVMTestingSupport
+-      OpenCL-Headers
++      OpenCL
+       ${SYCL_LINK_LIBS}
+     )
+   target_include_directories(${test_dirname}
+diff --git a/sycl/plugins/esimd_emulator/CMakeLists.txt b/sycl/plugins/esimd_emulator/CMakeLists.txt
+index 0b32c3925..e8b8616bc 100755
+--- a/sycl/plugins/esimd_emulator/CMakeLists.txt
++++ b/sycl/plugins/esimd_emulator/CMakeLists.txt
+@@ -58,6 +58,7 @@ if ((DEFINED USE_DEFAULT_CM_EMU_SOURCE) OR (DEFINED USE_LOCAL_CM_EMU_SOURCE))
+       INSTALL_DIR       ${CMAKE_CURRENT_BINARY_DIR}/cm-emu_install
+       CMAKE_ARGS        -DLIBVA_INSTALL_PATH=/usr
+                         -D__SYCL_EXPLICIT_SIMD_PLUGIN__=true
++                        -DLibFFI_INCLUDE_DIR=${LibFFI_INCLUDE_DIR}
+                         -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
+       BUILD_BYPRODUCTS  ${LIBCM} ${LIBIGFXCMRT_EMU}
+     )
+diff --git a/sycl/plugins/level_zero/CMakeLists.txt b/sycl/plugins/level_zero/CMakeLists.txt
+index 9391ff1e5..aa823e8fa 100755
+--- a/sycl/plugins/level_zero/CMakeLists.txt
++++ b/sycl/plugins/level_zero/CMakeLists.txt
+@@ -82,7 +82,7 @@ else()
+       COMMAND
+ 	  ${CMAKE_COMMAND} -E copy ${LEVEL_ZERO_LIBRARY_SRC} ${LLVM_LIBRARY_OUTPUT_INTDIR}
+       COMMAND
+-	  ${CMAKE_COMMAND} -E copy_directory ${LEVEL_ZERO_INCLUDE_DIR} ${LLVM_BINARY_DIR}/include/sycl
++	  ${CMAKE_COMMAND} -E copy_directory ${LEVEL_ZERO_INCLUDE_DIR}/level_zero ${LLVM_BINARY_DIR}/include/sycl/level_zero
+       DEPENDS
+ 	  ${LEVEL_ZERO_LIBRARY}
+           ${LEVEL_ZERO_INCLUDE_DIR}
+diff --git a/sycl/plugins/opencl/CMakeLists.txt b/sycl/plugins/opencl/CMakeLists.txt
+index 9943827e4..29fae166e 100644
+--- a/sycl/plugins/opencl/CMakeLists.txt
++++ b/sycl/plugins/opencl/CMakeLists.txt
+@@ -15,7 +15,7 @@ add_sycl_plugin(opencl
+     "${sycl_inc_dir}/sycl/detail/pi.h"
+     "pi_opencl.cpp"
+   LIBRARIES
+-    OpenCL-ICD
++    OpenCL
+ )
+ 
+ set_target_properties(pi_opencl PROPERTIES LINKER_LANGUAGE CXX)
+diff --git a/sycl/source/CMakeLists.txt b/sycl/source/CMakeLists.txt
+index 23b161480..4a5c48625 100644
+--- a/sycl/source/CMakeLists.txt
++++ b/sycl/source/CMakeLists.txt
+@@ -82,7 +82,7 @@ function(add_sycl_rt_library LIB_NAME LIB_OBJ_NAME)
+   )
+   #TODO: Remove dependency on opencl headers.
+   target_link_libraries(${LIB_OBJ_NAME}
+-    PRIVATE OpenCL-Headers
++    PRIVATE OpenCL
+   )
+ 
+   find_package(Threads REQUIRED)
+diff --git a/sycl/tools/CMakeLists.txt b/sycl/tools/CMakeLists.txt
+index eb62c48e1..6a7ff9aef 100644
+--- a/sycl/tools/CMakeLists.txt
++++ b/sycl/tools/CMakeLists.txt
+@@ -38,9 +38,8 @@ endif()
+ 
+ target_link_libraries(get_device_count_by_type
+   PRIVATE
+-    OpenCL-Headers
++    OpenCL
+     LevelZeroLoader::Headers
+-    OpenCL-ICD
+     ${LEVEL_ZERO_LIBRARY}
+     # The CUDA and HIP for NVIDA plugins need cudadrv
+     $<$<OR:$<BOOL:${SYCL_BUILD_PI_CUDA}>,$<AND:$<BOOL:${SYCL_BUILD_PI_HIP}>,$<STREQUAL:${SYCL_BUILD_PI_HIP_PLATFORM},NVIDIA>>>:cudadrv>
+diff --git a/sycl/tools/sycl-ls/CMakeLists.txt b/sycl/tools/sycl-ls/CMakeLists.txt
+index f5909cf49..f9c52e3a3 100644
+--- a/sycl/tools/sycl-ls/CMakeLists.txt
++++ b/sycl/tools/sycl-ls/CMakeLists.txt
+@@ -11,7 +11,7 @@ endif()
+ target_link_libraries(sycl-ls
+   PRIVATE
+     ${sycl_lib}
+-    OpenCL-Headers
++    OpenCL
+ )
+ install(TARGETS sycl-ls
+   RUNTIME DESTINATION "bin" COMPONENT sycl-ls)
+diff --git a/sycl/tools/sycl-prof/CMakeLists.txt b/sycl/tools/sycl-prof/CMakeLists.txt
+index 09586c1b8..ff708db67 100644
+--- a/sycl/tools/sycl-prof/CMakeLists.txt
++++ b/sycl/tools/sycl-prof/CMakeLists.txt
+@@ -16,7 +16,7 @@ add_library(sycl_profiler_collector SHARED collector.cpp)
+ target_compile_definitions(sycl_profiler_collector PRIVATE XPTI_CALLBACK_API_EXPORTS)
+ target_link_libraries(sycl_profiler_collector PRIVATE xptifw)
+ if (TARGET OpenCL-Headers)
+-  target_link_libraries(sycl_profiler_collector PRIVATE OpenCL-Headers)
++  target_link_libraries(sycl_profiler_collector PRIVATE OpenCL)
+ endif()
+ target_include_directories(sycl_profiler_collector PRIVATE
+     "${sycl_inc_dir}"
+diff --git a/sycl/tools/sycl-sanitize/CMakeLists.txt b/sycl/tools/sycl-sanitize/CMakeLists.txt
+index 16e7a1a49..e27b2cb21 100644
+--- a/sycl/tools/sycl-sanitize/CMakeLists.txt
++++ b/sycl/tools/sycl-sanitize/CMakeLists.txt
+@@ -14,7 +14,7 @@ add_library(sycl_sanitizer_collector SHARED collector.cpp)
+ target_compile_definitions(sycl_sanitizer_collector PRIVATE XPTI_CALLBACK_API_EXPORTS)
+ target_link_libraries(sycl_sanitizer_collector PRIVATE xptifw)
+ if (TARGET OpenCL-Headers)
+-  target_link_libraries(sycl_sanitizer_collector PRIVATE OpenCL-Headers)
++  target_link_libraries(sycl_sanitizer_collector PRIVATE OpenCL)
+ endif()
+ 
+ target_include_directories(sycl_sanitizer_collector PRIVATE
+diff --git a/sycl/tools/sycl-trace/CMakeLists.txt b/sycl/tools/sycl-trace/CMakeLists.txt
+index 385a348f6..721e29125 100644
+--- a/sycl/tools/sycl-trace/CMakeLists.txt
++++ b/sycl/tools/sycl-trace/CMakeLists.txt
+@@ -46,7 +46,7 @@ add_custom_target(ze-pretty-printers
+ target_compile_definitions(sycl_pi_trace_collector PRIVATE XPTI_CALLBACK_API_EXPORTS)
+ target_link_libraries(sycl_pi_trace_collector PRIVATE xptifw)
+ if (TARGET OpenCL-Headers)
+-  target_link_libraries(sycl_pi_trace_collector PRIVATE OpenCL-Headers)
++  target_link_libraries(sycl_pi_trace_collector PRIVATE OpenCL)
+ endif()
+ 
+ target_include_directories(sycl_pi_trace_collector PRIVATE
diff --git a/sys-devel/DPC++/metadata.xml b/sys-devel/DPC++/metadata.xml
new file mode 100644
index 000000000..771c45a25
--- /dev/null
+++ b/sys-devel/DPC++/metadata.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>sci@gentoo.org</email>
+		<name>Gentoo Science Project</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">intel/llvm</remote-id>
+	</upstream>
+	<use>
+		<flag name="cuda">use the cuda backend</flag>
+		<flag name="esimd_emulator">enable ESIMD CPU emulation</flag>
+		<flag name="hip">use the HIP backend</flag>
+	</use>
+</pkgmetadata>