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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
inherit toolchain-funcs
DESCRIPTION="Reverse-search algorithm for vertex enumeration problems"
HOMEPAGE="https://cgm.cs.mcgill.ca/~avis/C/lrs.html"
SRC_URI="https://cgm.cs.mcgill.ca/~avis/C/lrslib/archive/${P}.tar.gz"
# COPYING is GPL-2, but e.g. lrslib.h says "or ... any later version."
LICENSE="GPL-2+"
SLOT="0"
KEYWORDS="amd64 ~arm ~riscv ~amd64-linux"
IUSE="gmp mpi"
RDEPEND="
gmp? (
dev-libs/gmp:0=
mpi? ( virtual/mpi )
)"
DEPEND="${RDEPEND}"
PATCHES=(
"${FILESDIR}/${P}-cflags-ldflags.patch"
)
src_prepare() {
default
tc-export CC
# A LIBDIR variable exists in the makefile but "lib" remains
# hard-coded in the install targets.
sed -e "s,/usr/local,${EPREFIX}/usr,g" \
-e "s,/lib,/$(get_libdir),g" \
-i makefile || die
}
src_compile() {
if use gmp ; then
emake
emake all-shared
use mpi && emake mplrs
else
emake allmp
fi
}
src_install() {
emake DESTDIR="${D}" prefix="${EPREFIX}/usr" install-common
if use gmp; then
emake DESTDIR="${D}" prefix="${EPREFIX}/usr" install
use mpi && dobin mplrs
fi
dodoc README
}
src_test() {
bins=()
if use gmp; then
bins+=( "./lrs" )
use mpi && bins+=( "mpirun ./mplrs" )
fi
for b in "${bins[@]}"; do
for f in cube mp5; do
# There are other ine/ext pairs in the tarball, but only
# these two are at the top level and are obviously H/V
# counterparts.
echo "Testing example ${f} under ${b}..."
# Convert this H-repr to a V-repr, keeping only the list of
# vertices (which are indented by one space). We also sort
# the output because it's only consistent up to a
# permutation.
${b} "${f}.ine" \
| grep '^ ' \
| sort \
> "${T}/actual.txt" \
|| die
# The expected output is contained in the "ext" counterpart,
# which we have to sort for the same reason we sorted the
# actual output.
grep '^ ' \
"${f}.ext" \
| sort \
> "${T}/expected.txt" \
|| die
cmp "${T}/actual.txt" "${T}/expected.txt" \
|| die "test case ${f} under ${b} failed"
done
done
}
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