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# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
inherit flag-o-matic toolchain-funcs
DESCRIPTION="Elliptic Curve Method for Integer Factorization"
HOMEPAGE="http://ecm.gforge.inria.fr/"
SRC_URI="https://gforge.inria.fr/frs/download.php/file/36224/${P}.tar.gz"
LICENSE="GPL-3 LGPL-3"
SLOT="0"
KEYWORDS="amd64 x86 ~ppc-macos ~x64-macos ~x86-macos"
IUSE="+custom-tune openmp static-libs cpu_flags_x86_sse2"
DEPEND="dev-libs/gmp:="
RDEPEND="${DEPEND}"
# Can't both be enabled.
REQUIRED_USE="x86-macos? ( !custom-tune )"
S="${WORKDIR}/ecm-${PV}"
pkg_pretend() {
use openmp && tc-check-openmp
}
src_compile() {
default
if use custom-tune; then
# One "emake" was needed to build the library. Now we can find
# the best set of parameters, and then run "emake" one more time
# to rebuild the library with the custom parameters. See the
# project's README or INSTALL-ecm. The build targets don't depend
# on ecm-params.h, so we need to "make clean" to force a rebuild.
emake ecm-params && emake clean && emake
fi
}
src_configure() {
econf \
--enable-shared \
$(use_enable static-libs static) \
$(use_enable openmp) \
$(use_enable cpu_flags_x86_sse2 sse2) \
$(use_enable custom-tune asm-redc)
}
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