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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=7
FORTRAN_NEEDED=fortran
inherit flag-o-matic fortran-2 multibuild multilib-minimal toolchain-funcs
DESCRIPTION="Fast C library for the Discrete Fourier Transform"
HOMEPAGE="http://www.fftw.org/"
MY_P=${PN}-${PV/_p/-pl}
if [[ ${PV} == *9999 ]]; then
inherit autotools git-r3
EGIT_REPO_URI="https://github.com/FFTW/fftw3.git"
else
SRC_URI="http://www.fftw.org/${PN}-${PV/_p/-pl}.tar.gz"
KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
fi
LICENSE="GPL-2+"
SLOT="3.0/3"
IUSE="cpu_flags_arm_neon cpu_flags_ppc_altivec cpu_flags_x86_avx cpu_flags_x86_avx2 cpu_flags_x86_fma3 cpu_flags_x86_fma4 cpu_flags_x86_sse cpu_flags_x86_sse2 doc fortran mpi openmp test threads zbus"
RESTRICT="!test? ( test )"
RDEPEND="
mpi? ( >=virtual/mpi-2.0-r4[${MULTILIB_USEDEP}] )"
DEPEND="${RDEPEND}"
BDEPEND="
test? ( dev-lang/perl )"
S="${WORKDIR}/${MY_P}"
HTML_DOCS=( doc/html/. )
pkg_pretend() {
[[ ${MERGE_TYPE} != binary ]] && use openmp && tc-check-openmp
}
pkg_setup() {
if [[ ${MERGE_TYPE} != binary ]] && use openmp; then
tc-check-openmp
FORTRAN_NEED_OPENMP=1
fi
fortran-2_pkg_setup
MULTIBUILD_VARIANTS=( single double longdouble )
}
src_prepare() {
default
# fix info file for category directory
[[ ${PV} == *9999 ]] && eautoreconf
}
multilib_src_configure() {
local myconf=(
--enable-shared
--disable-static
$(use_enable "cpu_flags_x86_fma$(usex cpu_flags_x86_fma3 3 4)" fma)
$(use_enable fortran)
$(use_enable zbus mips-zbus-timer)
$(use_enable threads)
$(use_enable openmp)
)
[[ ${PV} == *9999 ]] && myconf+=( --enable-maintainer-mode )
# --enable-quad-precision is a brittle feature that requires
# __float128 support from the toolchain, which is lacking on
# most niche architectures. Bug #770346
case "${MULTIBUILD_ID}" in
single-*)
# altivec, sse, single-paired only work for single
myconf+=(
--enable-single
$(use_enable cpu_flags_ppc_altivec altivec)
$(use_enable cpu_flags_x86_avx avx)
$(use_enable cpu_flags_x86_avx2 avx2)
$(use_enable cpu_flags_x86_sse sse)
$(use_enable cpu_flags_x86_sse2 sse2)
$(use_enable cpu_flags_arm_neon neon)
$(use_enable mpi)
)
;;
double-*)
myconf+=(
$(use_enable cpu_flags_x86_avx avx)
$(use_enable cpu_flags_x86_avx2 avx2)
$(use_enable cpu_flags_x86_sse2 sse2)
$(use_enable mpi)
)
;;
longdouble-*)
myconf+=(
--enable-long-double
$(use_enable mpi)
)
;;
*)
die "${MULTIBUILD_ID%-*} precision not implemented in this ebuild"
;;
esac
ECONF_SOURCE="${S}" econf "${myconf[@]}" MPICC="$(tc-getCC)"
}
src_configure() {
# upstream does not append proper -m flags
# https://bugs.gentoo.org/698572
use cpu_flags_x86_avx2 && append-flags -mavx2
multibuild_foreach_variant multilib-minimal_src_configure
}
src_compile() {
multibuild_foreach_variant multilib-minimal_src_compile
}
multilib_src_test() {
emake -C tests smallcheck
}
src_test() {
# We want this to be a reasonably quick test, but that is still hard...
ewarn "This test series will take 30 minutes on a modern 2.5Ghz machine"
# Do not increase the number of threads, it will not help your performance
# local testbase="perl check.pl --nthreads=1 --estimate"
# ${testbase} -${p}d || die "Failure: $n"
multibuild_foreach_variant multilib-minimal_src_test
}
src_install() {
multibuild_foreach_variant multilib-minimal_src_install
dodoc CONVENTIONS
if use doc; then
dodoc doc/*.pdf
docinto faq
dodoc -r doc/FAQ/fftw-faq.html/.
else
rm -r "${ED}"/usr/share/doc/${PF}/html || die
fi
augment_pc_files() {
local x
for x in "${ED}"/usr/$(get_libdir)/pkgconfig/*.pc; do
local u
for u in $(usev mpi) $(usev threads) $(usex openmp omp ""); do
sed -e "s|-lfftw3[flq]\?|&_${u} &|" "${x}" > "${x%.pc}_${u}.pc" || die
done
done
}
multilib_foreach_abi augment_pc_files
# fftw uses pkg-config to record its private dependencies
find "${ED}" -name '*.la' -delete || die
}
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