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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit cmake
DESCRIPTION="A package for unstructured serial graph partitioning"
HOMEPAGE="https://github.com/KarypisLab/METIS"
SRC_URI="https://github.com/KarypisLab/METIS/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
S="${WORKDIR}/METIS-${PV}"
LICENSE="Apache-2.0"
SLOT="0"
KEYWORDS="~amd64 arm arm64 ~hppa ~ia64 ~loong ~mips ~ppc ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~arm64-macos ~x64-macos"
IUSE="double-precision examples int64 openmp"
PATCHES=(
"${FILESDIR}"/${P}-multilib.patch
"${FILESDIR}"/${P}-respect-user-flags.patch
# https://github.com/KarypisLab/METIS/pull/52 Bug 905822
"${FILESDIR}"/${P}-add-gklib-as-required.patch
)
DEPEND="sci-libs/gklib"
RDEPEND="${DEPEND}"
src_prepare() {
local idxwidth realwidth
if use int64; then
idxwidth="#define IDXTYPEWIDTH 64"
else
idxwidth="#define IDXTYPEWIDTH 32"
fi
if use double-precision; then
realwidth="#define REALTYPEWIDTH 64"
else
realwidth="#define REALTYPEWIDTH 32"
fi
cmake_src_prepare
# From Makefile
mkdir -p build/xinclude || die
echo ${idxwidth} > build/xinclude/metis.h || die
echo ${realwidth} >> build/xinclude/metis.h || die
cat include/metis.h >> build/xinclude/metis.h || die
cp include/CMakeLists.txt build/xinclude || die
}
src_configure() {
local mycmakeargs=(
-DSHARED=yes
-DOPENMP=$(usex openmp)
)
cmake_src_configure
}
src_test() {
cd graphs || die
local PATH="${BUILD_DIR}"/programs/:${PATH}
ndmetis mdual.graph || die
mpmetis metis.mesh 2 || die
gpmetis test.mgraph 4 || die
gpmetis copter2.graph 4 || die
graphchk 4elt.graph || die
}
src_install() {
cmake_src_install
dodoc manual/manual.pdf
if use examples; then
docinto examples
dodoc -r programs graphs
fi
cat >> "${T}"/metis.pc <<- EOF || die
prefix=${EPREFIX}/usr
exec_prefix=\${prefix}
libdir=\${exec_prefix}/$(get_libdir)
includedir=\${prefix}/include
Name: METIS
Description: Software for partioning unstructured graphes and meshes
Version: ${PV}
Cflags: -I\${includedir}
Libs: -L\${libdir} -lmetis -lGKlib
EOF
insinto /usr/$(get_libdir)/pkgconfig
doins "${T}"/metis.pc
}
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