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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
PYTHON_COMPAT=( python3_{10..11} )
inherit python-any-r1
DESCRIPTION="Scalable Library for Eigenvalue Problem Computations"
HOMEPAGE="https://slepc.upv.es/"
SRC_URI="https://slepc.upv.es/download/distrib/${P}.tar.gz"
LICENSE="LGPL-3"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="arpack complex-scalars doc +examples mpi"
REQUIRED_USE="arpack? ( mpi )"
RDEPEND="
=sci-mathematics/petsc-$(ver_cut 1-2)*:=[examples,mpi=,complex-scalars=]
arpack? ( sci-libs/arpack[mpi=] )
mpi? ( virtual/mpi )
"
DEPEND="${RDEPEND}
${PYTHON_DEPS}
virtual/pkgconfig
dev-build/cmake
"
MAKEOPTS="${MAKEOPTS} V=1"
src_configure() {
# *sigh*
addpredict "${PETSC_DIR}"/.nagged
# Make sure that the environment is set up correctly:
unset PETSC_DIR
unset PETSC_ARCH
source "${EPREFIX}"/etc/env.d/99petsc
export PETSC_DIR
export PETSC_ARCH
export SLEPC_DIR="${S}"
# configure is a custom python script and doesn't want to have default
# configure arguments that we set with econf
if use arpack; then
./configure \
--prefix="${EPREFIX}/usr/$(get_libdir)/slepcdir" \
--with-arpack=1 \
--with-arpack-lib="$(usex mpi "-lparpack -larpack" "-larpack")"
else
./configure \
--prefix="${EPREFIX}/usr/$(get_libdir)/slepcdir" \
--with-arpack=0
fi
}
src_install() {
emake DESTDIR="${ED}" install
#
# Clean up the mess:
#
# put all include directories under a proper subdirectory
mkdir "${ED}"/usr/include || die "mkdir failed (include)"
mv "${ED}"/usr/{$(get_libdir)/slepcdir/include,include/slepc} || die "mv failed (include)"
# put libraries and pkconfig file into proper place
mv "${ED}"/usr/$(get_libdir)/slepcdir/lib/{libslepc*,pkgconfig} \
"${ED}/usr/$(get_libdir)" || die "mv failed (lib)"
# move share to proper location
mv "${ED}"/usr/{$(get_libdir)/slepcdir/share,share} || die "mv failed (share)"
# fix pc files:
sed -i \
-e 's#include$#include/slepc#' \
-e "s#lib\$#$(get_libdir)#" \
-e "s#^prefix=.*slepcdir\$#prefix=${EPREFIX}/usr#" \
"${ED}"/usr/$(get_libdir)/pkgconfig/*.pc || die "sed failed (pkgconfig)"
# recreate a "valid" slepcdir:
for i in "${ED}"/usr/$(get_libdir)/*; do
[ $(basename $i) = slepcdir ] && continue
ln -s "${EPREFIX}/usr/$(get_libdir)/$(basename $i)" \
"${ED}/usr/$(get_libdir)/slepcdir/lib/$(basename $i)" || die "ln failed (slepcdir)"
done
ln -s "${EPREFIX}"/usr/include/slepc/ \
"${ED}/usr/$(get_libdir)/slepcdir/include" || die "ln failed (slepcdir)"
mkdir "${ED}/usr/$(get_libdir)/slepcdir/share" || die "mkdir fialed (slepcdir)"
ln -s "${EPREFIX}"/usr/share/slepc/ \
"${ED}/usr/$(get_libdir)/slepcdir/share/slepc" || die "ln failed (slepcdir)"
if use examples; then
mkdir -p "${ED}"/usr/share/doc/${PF} || die "mkdir failed (examples)"
mv "${ED}"/usr/share/slepc/examples "${ED}"/usr/share/doc/${PF} || die "mv failed (examples)"
ln -s "${EPREFIX}"/usr/share/doc/${PF}/examples "${ED}"/usr/share/slepc/examples || die "ln failed (examples)"
docompress -x /usr/share/doc/${PF}/examples
else
rm -r "${ED}"/usr/share/slepc/examples || die "rm failed (examples)"
fi
if use doc ; then
dodoc docs/slepc.pdf
docinto html
dodoc -r docs/*.html docs/manualpages
fi
# add PETSC_DIR to environmental variables
cat >> 99slepc <<- EOF
SLEPC_DIR=${EPREFIX}/usr/$(get_libdir)/slepcdir
EOF
doenvd 99slepc
}
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