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# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit cmake cuda toolchain-funcs
DESCRIPTION="Fast approximate nearest neighbor searches in high dimensional spaces"
HOMEPAGE="https://github.com/flann-lib/flann"
COMMIT="f9caaf609d8b8cb2b7104a85cf59eb92c275a25d"
SRC_URI="
https://github.com/flann-lib/${PN}/archive/${COMMIT}.tar.gz
-> ${P}.tar.gz
https://github.com/negril/gentoo-overlay-vendored/raw/refs/heads/blobs/${P}-patches-r1.tar.xz
"
S="${WORKDIR}/${PN}-${COMMIT}"
LICENSE="BSD"
SLOT="0"
KEYWORDS="amd64 ~arm arm64 ~ppc ~x86"
IUSE="cuda doc examples mpi octave openmp test"
RESTRICT="!test? ( test )"
BDEPEND="
doc? (
dev-tex/latex2html
)
"
RDEPEND="
app-arch/lz4:=
cuda? (
dev-util/nvidia-cuda-toolkit:=
)
examples? (
sci-libs/hdf5:=[mpi?]
)
mpi? (
virtual/mpi
dev-libs/boost:=[mpi]
sci-libs/hdf5:=
)
octave? (
>=sci-mathematics/octave-3.6.4-r1:=
)
"
DEPEND="${RDEPEND}
test? (
dev-cpp/gtest
sci-libs/hdf5[mpi?]
)
"
PATCHES=(
"${FILESDIR}"/${PN}-1.9.1-build-oct-rather-than-mex-files-for-octave.patch # bug 830424
"${FILESDIR}"/${PN}-1.9.2-asio-boost187.patch
"${FILESDIR}"/${PN}-1.9.2-boost-config-1.89.patch
"${FILESDIR}"/${PN}-1.9.2-system-gtest.patch
"${FILESDIR}"/${PN}-1.9.2-gettimeofday.patch
# "${FILESDIR}/${PN}-1.9.2-lz4-dependency-fix.patch" # https://github.com/flann-lib/flann/pull/523
# "${FILESDIR}/${PN}-1.9.2-fix-build.patch"
# "${FILESDIR}/${PN}-1.9.2-allow-user-CUDAARCHS.patch"
# "${FILESDIR}/${PN}-1.9.2-use-gtest_discover_tests.patch"
# "${FILESDIR}/${PN}-1.9.2-loosen-test-precision.patch"
# "${FILESDIR}/${PN}-1.9.2-cleanup-find_HDF5.patch"
# "${FILESDIR}/${PN}-1.9.2-add-USE_CPACK.patch"
)
pkg_pretend() {
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
pkg_setup() {
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
src_prepare() {
cmake_src_prepare
for patch in "${WORKDIR}/${P}-patches-r1"/*; do
eapply "${patch}"
done
}
src_configure() {
# python bindings were split off into dev-python/pyflann
local mycmakeargs=(
-DCMAKE_CXX_STANDARD=17
-DBUILD_C_BINDINGS="yes"
-DBUILD_PYTHON_BINDINGS="no"
-DBUILD_CUDA_LIB="$(usex cuda)"
-DBUILD_EXAMPLES="$(usex examples)"
-DBUILD_DOC="$(usex doc)"
-DBUILD_TESTS="$(usex test)"
-DBUILD_MATLAB_BINDINGS="$(usex octave)"
-DUSE_MPI="$(usex mpi)"
-DUSE_OPENMP="$(usex openmp)"
-DCMAKE_BUILD_STATIC_LIBS="no"
)
if use cuda; then
cuda_add_sandbox -w
export CUDAHOSTCXX="$(cuda_gccdir)"
export CUDAHOSTLD="$(tc-getCXX)"
fi
use doc && mycmakeargs+=( -DDOCDIR="share/doc/${PF}" )
cmake_src_configure
}
src_compile() {
local targets=( "all" )
use doc && targets+=( "doc" )
if use test; then
targets+=( "flann_gtests" )
if use cuda; then
targets+=( "flann_cuda_test" )
fi
fi
cmake_src_compile "${targets[@]}"
}
src_test() {
if use cuda; then
addpredict "/dev/char/"
cuda_add_sandbox -w
fi
# some fail when run in parallel
cmake_src_test -j1
}
|
