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# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
EAPI=5
FORTRAN_NEEDED=fortran
inherit autotools-multilib eutils flag-o-matic fortran-2 multibuild toolchain-funcs versionator
DESCRIPTION="Fast C library for the Discrete Fourier Transform"
HOMEPAGE="http://www.fftw.org/"
if [[ ${PV} = *9999 ]]; then
inherit git-2
EGIT_REPO_URI="https://github.com/FFTW/fftw3.git"
KEYWORDS="alpha amd64 arm hppa ia64 ppc ppc64 sparc x86"
AUTOTOOLS_AUTORECONF=1
else
SRC_URI="http://www.fftw.org/${P}.tar.gz"
KEYWORDS="alpha amd64 arm hppa ia64 ~mips ppc ppc64 sparc x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos"
fi
LICENSE="GPL-2+"
SLOT="3.0/3"
IUSE="altivec cpu_flags_x86_avx doc cpu_flags_x86_fma3 cpu_flags_x86_fma4 fortran mpi neon openmp quad cpu_flags_x86_sse cpu_flags_x86_sse2 static-libs test threads zbus"
RDEPEND="
mpi? ( virtual/mpi )
abi_x86_32? ( !<=app-emulation/emul-linux-x86-soundlibs-20130224-r2
!app-emulation/emul-linux-x86-soundlibs[-abi_x86_32(-)] )"
DEPEND="${RDEPEND}
test? ( dev-lang/perl )"
pkg_setup() {
if [[ ${MERGE_TYPE} != binary ]] && use openmp; then
if [[ $(tc-getCC) == *gcc ]] && ! tc-has-openmp; then
ewarn "OpenMP is not available in your current selected gcc"
die "need openmp capable gcc"
fi
FORTRAN_NEED_OPENMP=1
fi
fortran-2_pkg_setup
MULTIBUILD_VARIANTS=( single double longdouble )
if use quad; then
if [[ $(tc-getCC) == *gcc ]] && ! version_is_at_least 4.6 $(gcc-version); then
ewarn "quad precision only available for gcc >= 4.6"
die "need quad precision capable gcc"
fi
MULTIBUILD_VARIANTS+=( quad )
fi
}
src_prepare() {
# fix info file for category directory
[[ ${PV} = *9999 ]] || sed -i \
-e 's/Texinfo documentation system/Libraries/' \
doc/fftw3."info" || die "failed to fix info file"
autotools-utils_src_prepare
}
src_configure() {
local x
# filter -Os according to docs
replace-flags -Os -O2
my_configure() {
#a bit hacky improve after #483758 is solved
local x=${BUILD_DIR%-*}
x=${x##*-}
# there is no abi_x86_32 port of virtual/mpi right now
local enable_mpi=$(use_enable mpi)
multilib_is_native_abi || enable_mpi="--disable-mpi"
#jlec reported USE=quad on abi_x86_32 has too less registers
#stub Makefiles
if [[ ${ABI} == x86 && ${x} == quad ]]; then
mkdir -p "${BUILD_DIR}/tests" || die
echo "all: ;" > "${BUILD_DIR}/Makefile" || die
echo "install: ;" >> "${BUILD_DIR}/Makefile" || die
echo "smallcheck: ;" > "${BUILD_DIR}/tests/Makefile" || die
return 0
fi
local myeconfargs=(
$(use_enable "cpu_flags_x86_fma$(usex cpu_flags_x86_fma3 3 4)" fma)
$(use_enable fortran)
$(use_enable zbus mips-zbus-timer)
$(use_enable threads)
$(use_enable openmp)
)
if [[ $x == single ]]; then
#altivec, sse, single-paired only work for single
myeconfargs+=(
--enable-single
$(use_enable altivec)
$(use_enable cpu_flags_x86_avx avx)
$(use_enable cpu_flags_x86_sse sse)
${enable_mpi}
$(use_enable neon)
)
elif [[ $x == double ]]; then
myeconfargs+=(
$(use_enable cpu_flags_x86_avx avx)
$(use_enable cpu_flags_x86_sse2 sse2)
${enable_mpi}
)
elif [[ $x == longdouble ]]; then
myeconfargs+=(
--enable-long-double
${enable_mpi}
)
elif [[ $x == quad ]]; then
#quad does not support mpi
myeconfargs+=( --enable-quad-precision )
else
die "${x} precision not implemented in this ebuild"
fi
autotools-utils_src_configure
}
multibuild_foreach_variant multilib_parallel_foreach_abi my_configure
}
src_compile() {
multibuild_foreach_variant autotools-multilib_src_compile
}
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: $n"
multibuild_foreach_variant autotools-multilib_src_compile -C tests smallcheck
}
src_install () {
local u x
DOCS=( AUTHORS ChangeLog NEWS README TODO COPYRIGHT CONVENTIONS )
HTML_DOCS=( doc/html/ )
multibuild_foreach_variant multilib_foreach_abi autotools-utils_src_install
if use doc; then
dodoc doc/*.pdf
insinto /usr/share/doc/${PF}/faq
doins -r doc/FAQ/fftw-faq.html/*
else
rm -r "${ED}"/usr/share/doc/${PF}/html
fi
for x in "${ED}"/usr/lib*/pkgconfig/*.pc; do
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
}
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