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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-2.1.5-r5.ebuild,v 1.8 2009/04/18 15:06:10 maekke Exp $
inherit eutils flag-o-matic multilib autotools fortran toolchain-funcs
DESCRIPTION="Fast C library for the Discrete Fourier Transform"
SRC_URI="http://www.fftw.org/${P}.tar.gz"
HOMEPAGE="http://www.fftw.org"
# hppa does not have yet a virtual/mpi
DEPEND="mpi? ( virtual/mpi )"
SLOT="2.1"
LICENSE="GPL-2"
IUSE="doc float fortran mpi openmp threads"
KEYWORDS="alpha amd64 hppa ~ia64 ppc ppc64 ~sparc x86"
pkg_setup() {
# this one is reported to cause trouble on pentium4 m series
filter-mfpmath "sse"
# here I need (surprise) to increase optimization:
# --enable-i386-hacks requires -fomit-frame-pointer to work properly
if use x86; then
is-flag "-fomit-frame-pointer" || append-flags "-fomit-frame-pointer"
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 the configure script will select POSIX threads."
epause 5
fi
FORTRAN="gfortran ifc g77"
use fortran && fortran_pkg_setup
}
src_unpack() {
# doc suggests installing single and double precision versions
# via separate compilations. will do in two separate source trees
# since some sed'ing is done during the build
# (?if --enable-type-prefix is set?)
unpack ${A}
cd "${S}"
epatch "${FILESDIR}"/${P}-as-needed.patch
epatch "${FILESDIR}"/${P}-configure.in.patch
epatch "${FILESDIR}"/${P}-no-test.patch
# fix info files
for infofile in doc/fftw*info*; do
cat >> ${infofile} <<-EOF
INFO-DIR-SECTION Libraries
START-INFO-DIR-ENTRY
* fftw: (fftw). ${DESCRIPTION}
END-INFO-DIR-ENTRY
EOF
done
eautoreconf
cd "${WORKDIR}"
cp -R ${P} ${P}-double
mv ${P} ${P}-single
}
src_compile() {
local myconf="
--enable-shared
--enable-type-prefix
--enable-vec-recurse
$(use_enable fortran)
$(use_enable mpi)
$(use_enable x86 i386-hacks)"
if use openmp; then
myconf="${myconf}
--enable-threads
--with-openmp"
elif use threads; then
myconf="${myconf}
--enable-threads
--without-openmp"
else
myconf="${myconf}
--disable-threads
--without-openmp"
fi
cd "${S}-single"
econf ${myconf} --enable-float || die "econf for float failed"
emake || die "emake for float failed"
cd "${S}-double"
econf ${myconf} || die "econf for double failed"
emake || die "emake for double failed"
}
src_test() {
cd "${S}-single"
emake -j1 check || die "emake check single failed"
cd "${S}-double"
emake -j1 check || die "emake check double failed"
}
src_install () {
# both builds are installed in the same place
# libs are distinguished by prefix (s or d), see docs for details
cd "${S}-single"
emake DESTDIR="${D}" install || die "emake install float failed"
cd "${S}-double"
emake DESTDIR="${D}" install || die "emake install double failed"
insinto /usr/include
doins fortran/fftw_f77.i || die "doins failed"
dodoc AUTHORS ChangeLog NEWS TODO README README.hacks || die "dodoc failed"
use doc && dohtml doc/*
if use float; then
for f in "${D}"/usr/{include,$(get_libdir)}/*sfft*; do
ln -s $(basename ${f}) ${f/sfft/fft}
done
for f in "${D}"/usr/{include,$(get_libdir)}/*srfft*; do
ln -s $(basename ${f}) ${f/srfft/rfft}
done
else
for f in "${D}"/usr/{include,$(get_libdir)}/*dfft*; do
ln -s $(basename ${f}) ${f/dfft/fft}
done
for f in "${D}"/usr/{include,$(get_libdir)}/*drfft*; do
ln -s $(basename ${f}) ${f/drfft/rfft}
done
fi
}
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