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# Copyright 1999-2025 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit meson
DESCRIPTION="Neural-network chess engine"
HOMEPAGE="https://github.com/LeelaChessZero/lc0/"
SRC_URI="https://github.com/LeelaChessZero/${PN}/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz
https://github.com/LeelaChessZero/lczero-common/archive/c47d3683972d9ef293b0c0bc7675f7c2c5ce2274.tar.gz -> ${PN}-common-${PV}.tar.gz
https://raw.githubusercontent.com/KhronosGroup/OpenCL-CLHPP/refs/tags/v2025.07.22/include/CL/opencl.hpp -> ${P}-opencl.hpp"
LICENSE="GPL-3"
SLOT="0"
KEYWORDS="~amd64"
IUSE="blas dnnl ispc onnx opencl test"
RDEPEND="dev-cpp/eigen
dev-cpp/gtest
blas? ( sci-libs/openblas )
ispc? ( dev-lang/ispc )
dnnl? ( sci-ml/oneDNN )
onnx? ( sci-libs/onnxruntime )
opencl? ( virtual/opencl )"
DEPEND="${RDEPEND}"
RESTRICT="!test? ( test )"
src_prepare() {
cp -r "${WORKDIR}/lczero-common-c47d3683972d9ef293b0c0bc7675f7c2c5ce2274/proto" "${S}/libs/lczero-common/" || die
cp "${DISTDIR}/${P}-opencl.hpp" "third_party/opencl.hpp" || die
eapply_user
default
}
src_configure() {
local emesonargs=(
$(meson_use ispc ispc)
$(meson_use dnnl dnnl)
$(meson_use opencl opencl)
'-Donnx_libdir=/usr/lib64'
'-Donnx_include=/usr/include/onnxruntime'
'-Dcpp_args=-I/usr/include/eigen3'
'-Ddag_classic=false'
)
meson_src_configure
}
src_install() {
mkdir -p "${D}/usr/bin"
cp "${S}-build/lc0" "${D}/usr/bin" || die
default
}
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