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# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sci-libs/fftw/fftw-3.2.1.ebuild,v 1.5 2009/04/12 18:14:44 ranger Exp $
EAPI=2
inherit flag-o-matic eutils toolchain-funcs autotools fortran
DESCRIPTION="Fast C library for the Discrete Fourier Transform"
HOMEPAGE="http://www.fftw.org/"
SRC_URI="http://www.fftw.org/${P}.tar.gz"
LICENSE="GPL-2"
SLOT="3.0"
KEYWORDS="alpha ~amd64 ~arm hppa ~ia64 ~mips ppc ppc64 ~sparc ~x86"
IUSE="altivec doc fortran openmp sse sse2 threads"
pkg_setup() {
FFTW_THREADS="--disable-threads --disable-openmp"
if use openmp; then
FFTW_THREADS="--disable-threads --enable-openmp"
elif use threads; then
FFTW_THREADS="--enable-threads --disable-openmp"
fi
if use openmp &&
[[ $(tc-getCC)$ == *gcc* ]] &&
( [[ $(gcc-major-version)$(gcc-minor-version) -lt 42 ]] ||
! built_with_use sys-devel/gcc openmp )
then
ewarn "You are using gcc and OpenMP is only available with gcc >= 4.2 "
ewarn "If you want to build fftw with OpenMP, abort now,"
ewarn "and switch CC to an OpenMP capable compiler"
ewarn "Otherwise, we will build using POSIX threads."
epause 5
FFTW_THREADS="--enable-threads --disable-openmp"
fi
FORTRAN="gfortran ifc g77"
use fortran && fortran_pkg_setup
FFTW_DIRS="single double longdouble"
}
src_prepare() {
epatch "${FILESDIR}"/${P}-as-needed.patch
# fix info file for category directory
sed -i \
-e 's/Texinfo documentation system/Libraries/' \
doc/fftw3.info || die "failed to fix info file"
rm m4/lt* m4/libtool.m4
AT_M4DIR=m4 eautoreconf
for x in ${FFTW_DIRS}; do
mkdir "${S}-${x}" || die
done
}
src_configure() {
# filter -Os according to docs
replace-flags -Os -O2
local myconfcommon="--enable-shared
$(use_enable fortran)
${FFTW_THREADS}"
local myconfsingle="${myconfcommon} --enable-single"
local myconfdouble="${myconfcommon}"
local myconflongdouble="${myconfcommon} --enable-long-double"
if use sse2; then
myconfsingle="${myconfsingle} --enable-sse"
myconfdouble="${myconfdouble} --enable-sse2"
elif use sse; then
myconfsingle="${myconfsingle} --enable-sse"
fi
# altivec only helps singles, not doubles
if use altivec; then
myconfsingle="${myconfsingle} --enable-altivec"
fi
for x in ${FFTW_DIRS}; do
cd "${S}-${x}"
einfo "Configuring for ${x} precision"
local p=myconf${x}
ECONF_SOURCE="${S}" econf ${!p}
done
}
src_compile() {
for x in ${FFTW_DIRS}; do
cd "${S}-${x}"
einfo "Compiling for ${x} precision"
emake || die "emake for ${x} precision failed"
done
}
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"
for x in ${FFTW_DIRS}; do
cd "${S}-${x}/tests"
einfo "Testing ${x} precision"
emake -j1 check || die "emake test ${x} failed"
done
}
src_install () {
# all builds are installed in the same place
# libs have distinuguished names; include files, docs etc. identical.
for x in ${FFTW_DIRS}; do
cd "${S}-${x}"
emake DESTDIR="${D}" install || die "emake install for ${x} failed"
done
cd "${S}"
dodoc AUTHORS ChangeLog NEWS README TODO COPYRIGHT CONVENTIONS
if use doc; then
cd doc
insinto /usr/share/doc/${PF}
doins -r html fftw3.pdf || die "doc install failed"
insinto /usr/share/doc/${PF}/faq
doins FAQ/fftw-faq.html/*
fi
}
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