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# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-libs/fftw/fftw-2.1.3-r1.ebuild,v 1.8 2004/07/14 14:25:56 agriffis Exp $
IUSE="mpi"
DESCRIPTION="C subroutine library for computing the Discrete Fourier Transform (DFT)"
SRC_URI="http://www.fftw.org/${P}.tar.gz"
HOMEPAGE="http://www.fftw.org"
#lam compiled fine on uniprocessor (drobbins, 01 Aug 2002)
DEPEND="mpi? ( >=sys-cluster/lam-mpi-6.5.6 )"
SLOT="2.1"
LICENSE="GPL-2"
KEYWORDS="x86 ppc sparc ~alpha"
src_unpack() {
#doc suggests installing single and double precision versions via separate compilations
#will do in two separate source trees
#since some sed'ing is done during the build (?if --enable-type-prefix is set?)
unpack "${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 "${S}-single"
dodoc AUTHORS ChangeLog COPYING INSTALL NEWS TODO
dohtml doc/fftw*.html
if [ "$SINGLE" = "yes" ]; then
cd ${D}usr/include
dosym sfftw.h /usr/include/fftw.h
dosym srfftw.h /usr/include/rfftw.h
dosym sfftw_threads.h /usr/include/fftw_threads.h
dosym srfftw_threads.h /usr/include/rfftw_threads.h
cd ${D}usr/lib
dosym libsfftw.so /usr/lib/libfftw.so
dosym libsrfftw.so /usr/lib/librfftw.so
dosym libsfftw_threads.so /usr/lib/libfftw_threads.so
dosym libsrfftw_threads.so /usr/lib/librfftw_threads.so
else
cd ${D}usr/include
dosym dfftw.h /usr/include/fftw.h
dosym drfftw.h /usr/include/rfftw.h
dosym dfftw_threads.h /usr/include/fftw_threads.h
dosym drfftw_threads.h /usr/include/rfftw_threads.h
cd ${D}usr/lib
dosym libdfftw.so /usr/lib/libfftw.so
dosym libdrfftw.so /usr/lib/librfftw.so
dosym libdfftw_threads.so /usr/lib/libfftw_threads.so
dosym libdrfftw_threads.so /usr/lib/librfftw_threads.so
fi
}
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