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# Copyright 1999-2002 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-libs/fftw/fftw-2.1.3.ebuild,v 1.10 2002/10/05 05:39:10 drobbins Exp $
IUSE="mpi"
S="${WORKDIR}/${P}"
DESCRIPTION="C subroutine library for computing the Discrete Fourier Transform (DFT)"
SRC_URI="http://www.fftw.org/${P}.tar.gz"
HOMEPAGE="http://www.fftw.org"
#lam compiled fine on uniprocessor (drobbins, 01 Aug 2002)
DEPEND="mpi? ( >=dev-libs/lam-mpi-6.5.6 )"
SLOT="2.1"
LICENSE="GPL-2"
KEYWORDS="x86 ppc sparc sparc64"
src_unpack() {
#doc suggests installing single and double precision versions via separate compilations
#will do in two separate source trees
#since some sed'ing is done during the build (?if --enable-type-prefix is set?)
unpack "${P}.tar.gz"
cd "${WORKDIR}"
mv ${P} ${P}-single
unpack "${P}.tar.gz"
cd "${WORKDIR}"
mv ${P} ${P}-double
}
src_compile() {
#here I need (surprise) to increase optimization:
#--enable-i386-hacks requires -fomit-frame-pointer to work properly
export CFLAGS="${CFLAGS/-fomit-frame-pointer/} -fomit-frame-pointer"
local myconf=""
use mpi && myconf="${myconf} --enable-mpi"
#mpi is not a valid flag yet. In this revision it is used merely to block --enable-mpi option
#it might be needed if it is decided that lam is an optional dependence
cd "${S}-single"
econf \
--enable-shared \
--enable-threads \
--enable-type-prefix \
--enable-float \
--enable-i386-hacks \
--enable-vec-recurse \
${myconf} || die "./configure failed"
emake || die
#the only difference here is no --enable-float
cd "${S}-double"
econf \
--enable-shared \
--enable-threads \
--enable-type-prefix \
--enable-i386-hacks \
--enable-vec-recurse \
${myconf} || die "./configure failed"
emake || die
}
src_install () {
#both builds are installed in the same place
#libs are distinguished by preffix (s or d), see docs for details
cd "${S}-single"
make DESTDIR=${D} install || die
cd "${S}-double"
# fix info file
echo "INFO-DIR-SECTION Libraries" >>$fftw.info
echo "START-INFO-DIR-ENTRY" >>doc/fftw.info
echo "* fftw: (fftw). C subroutine library for computing the Discrete Fourier Transform (DFT)" >>doc/fftw.info
echo "END-INFO-DIR-ENTRY" >>doc/fftw.info
make DESTDIR=${D} install || die
# Install documentation.
cd "${S}-single"
dodoc AUTHORS ChangeLog COPYING INSTALL NEWS TODO
dohtml doc/fftw*.html
}
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