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# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
EAPI=5
inherit autotools eutils flag-o-matic multilib
DESCRIPTION="Elliptic Curve Method for Integer Factorization"
HOMEPAGE="http://ecm.gforge.inria.fr/"
SRC_URI="https://gforge.inria.fr/frs/download.php/32159/${P}.tar.gz"
LICENSE="GPL-3 LGPL-3"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="+blas +custom-tune gwnum -openmp static-libs test"
DEPEND="
dev-libs/gmp:0=
blas? ( sci-libs/gsl )
gwnum? ( sci-mathematics/gwnum )
openmp? ( sys-devel/gcc:*[openmp] )"
RDEPEND="${DEPEND}"
# can't be both enabled
REQUIRED_USE="gwnum? ( !openmp )"
S=${WORKDIR}/ecm-${PV}
MAKEOPTS+=" -j1"
src_prepare() {
sed -e '/libecm_la_LIBADD/s:$: -lgmp:g' -i Makefile.am || die
eautoreconf
}
src_configure() {
use gwnum && local myconf="--with-gwnum="${EPREFIX}"/usr/$(get_libdir)"
# --enable-shellcmd is broken
econf \
--enable-shared \
$(use_enable static-libs static) \
$(use_enable openmp) \
${myconf}
}
src_compile() {
append-ldflags "-Wl,-z,noexecstack"
if use custom-tune; then
use amd64 && cd x86_64
use x86 && cd pentium4
emake
cd .. && make bench_mulredc || die
sed -i -e 's:#define TUNE_MULREDC_TABLE://#define TUNE_MULREDC_TABLE:g' `readlink ecm-params.h` || die
sed -i -e 's:#define TUNE_SQRREDC_TABLE://#define TUNE_SQRREDC_TABLE:g' `readlink ecm-params.h` || die
./bench_mulredc | tail -n 4 >> `readlink ecm-params.h` || die
fi
default
}
src_install() {
default
mkdir -p "${ED}/usr/include/${PN}/"
cp "${S}"/*.h "${ED}/usr/include/${PN}" || die "Failed to copy headers" # needed by other apps like YAFU
}
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