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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
inherit autotools flag-o-matic toolchain-funcs
MY_PN="ecm"
MY_P="${MY_PN}-${PV}"
DESCRIPTION="Elliptic Curve Method for Integer Factorization"
HOMEPAGE="https://gitlab.inria.fr/zimmerma/ecm"
SRC_URI="https://gitlab.inria.fr/zimmerma/ecm/uploads/9cd422ec80268f8a885e499e17f98056/${MY_P}.tar.gz"
LICENSE="GPL-3 LGPL-3"
SLOT="0"
KEYWORDS="amd64 ~arm ~arm64 ~riscv x86 ~ppc-macos ~x64-macos"
IUSE="+custom-tune openmp static-libs cpu_flags_x86_sse2"
DEPEND="dev-libs/gmp:="
RDEPEND="${DEPEND}"
PATCHES=(
"${FILESDIR}"/${PN}-7.0.4-openmp.patch
"${FILESDIR}"/${PN}-7.0.4-execstack.patch
)
S="${WORKDIR}/${MY_P}"
pkg_pretend() {
use openmp && tc-check-openmp
}
src_prepare(){
default
# patch the asm files
# create a sample with the assembly code needed
# Quote around # are needed because the files will be processed by M4.
cat <<-EOF > "${T}/sample.asm"
\`#'if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack,"",%progbits
\`#'endif
EOF
# patch the asm files
cat "${T}/sample.asm" >> x86_64/mulredc1.asm
for i in {2..20} ; do
cat "${T}/sample.asm" >> x86_64/mulredc"$i".asm
cat "${T}/sample.asm" >> x86_64/mulredc1_"$i".asm
done
eautoreconf
}
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) \
$(use_enable custom-tune asm-redc)
}
src_install() {
default
# remove .la file
find "${ED}" -name '*.la' -delete || die
}
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