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# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sci-libs/fftw/fftw-3.0.1-r1.ebuild,v 1.4 2005/04/01 17:06:46 agriffis Exp $
inherit flag-o-matic eutils gcc
DESCRIPTION="C subroutine library for computing the Discrete Fourier Transform (DFT)"
HOMEPAGE="http://www.fftw.org/"
SRC_URI="http://www.fftw.org/${P}.tar.gz"
LICENSE="GPL-2"
SLOT="3.0"
KEYWORDS="~alpha amd64 hppa ia64 ~ppc ~ppc-macos ppc64 ~sparc ~x86"
IUSE="3dnow altivec mpi sse"
DEPEND="virtual/libc"
src_unpack() {
unpack "${P}.tar.gz"
cd "${WORKDIR}"
use ppc-macos && epatch ${FILESDIR}/${PN}-ppc-macos.patch
mv ${P} ${P}-single
unpack "${P}.tar.gz"
cd "${WORKDIR}"
use ppc-macos && epatch ${FILESDIR}/${PN}-ppc-macos.patch
mv ${P} ${P}-double
}
src_compile() {
#-fpmath=xx is reported to cause trouble on pentium4 m series
#(for 3.0.x: this sort of thing should be handled by the --enable-sse
#style configure flags. these are set below using the use variables,
#but under gcc-3.2.x, sse2 seems to cause trouble.)
filter-mfpmath
# in gcc 3.2.3 at least, using sse or sse2 causes trouble with -O3
# according to the docs, -O0 can cause trouble too! So pending further
# testing, ...
if use sse; then
filter-flags -O3 -O1 -O -Os
append-flags -O2
fi
local myconf=""
local myconfsingle=""
local myconfdouble=""
use mpi && myconf="${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
if use sse; then
myconfsingle="$myconfsingle --enable-sse"
myconfdouble="$myconfdouble --enable-sse2"
elif use 3dnow; then
myconfsingle="$myconfsingle --enable-k7"
fi
# Altivec-support in fftw is currently broken
# with gcc 3.4
if [ "`gcc-version`" != "3.4" ]; then
myconfsingle="$myconfsingle `use_enable altivec`"
fi
cd "${S}-single"
econf \
--enable-shared \
--enable-threads \
--enable-float \
${myconf} ${myconfsingle} || die "./configure failed"
emake || die
#the only difference here is no --enable-float
cd "${S}-double"
econf \
--enable-shared \
--enable-threads \
${myconf} ${myconfdouble} || die "./configure failed"
emake || die
}
src_install () {
#both builds are installed in the same place
#libs have distinuguished names; include files, docs etc. identical.
cd "${S}-single"
make DESTDIR=${D} install || die
cd "${S}-double"
make DESTDIR=${D} install || die
# Install documentation.
cd "${S}-single"
dodoc AUTHORS ChangeLog COPYING INSTALL NEWS README TODO
dodoc COPYRIGHT CONVENTIONS
cd doc/html
dohtml -r .
}
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