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# Copyright 1999-2011 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# $Header: /var/cvsroot/gentoo-x86/sci-libs/fftw/fftw-2.1.5-r5.ebuild,v 1.24 2012/04/25 17:48:26 jlec Exp $
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inherit autotools eutils flag-o-matic fortran-2 toolchain-funcs
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DESCRIPTION="Fast C library for the Discrete Fourier Transform"
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SRC_URI="http://www.fftw.org/${P}.tar.gz"
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HOMEPAGE="http://www.fftw.org"
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DEPEND="
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fortran? ( virtual/fortran )
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mpi? ( virtual/mpi )"
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RDEPEND="${DEPEND}"
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SLOT="2.1"
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LICENSE="GPL-2"
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IUSE="doc float fortran mpi openmp threads"
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KEYWORDS="alpha amd64 ~arm hppa ia64 ppc ppc64 s390 sparc x86"
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pkg_setup() {
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use openmp && FORTRAN_NEED_OPENMP="1"
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use fortran && fortran-2_pkg_setup
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# this one is reported to cause trouble on pentium4 m series
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filter-mfpmath "sse"
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# here I need (surprise) to increase optimization:
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# --enable-i386-hacks requires -fomit-frame-pointer to work properly
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if use x86; then
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is-flag "-fomit-frame-pointer" || append-flags "-fomit-frame-pointer"
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fi
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if use openmp && [[ $(tc-getCC) == *gcc* ]] && ! $(tc-has-openmp); then
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ewarn "You are using gcc and OpenMP is only available with gcc >= 4.2 "
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ewarn "If you want to build fftw with OpenMP, abort now,"
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ewarn "and switch CC to an OpenMP capable compiler"
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ewarn "Otherwise the configure script will select POSIX threads."
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fi
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use openmp && [[ $(tc-getCC)$ == icc* ]] && append-ldflags $(no-as-needed)
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}
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src_unpack() {
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# doc suggests installing single and double precision versions
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# via separate compilations. will do in two separate source trees
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# since some sed'ing is done during the build
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# (?if --enable-type-prefix is set?)
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unpack ${A}
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cd "${S}"
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epatch "${FILESDIR}"/${P}-as-needed.patch
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epatch "${FILESDIR}"/${P}-configure.in.patch
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epatch "${FILESDIR}"/${P}-no-test.patch
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# fix info files
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for infofile in doc/fftw*info*; do
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cat >> ${infofile} <<-EOF
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INFO-DIR-SECTION Libraries
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START-INFO-DIR-ENTRY
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* fftw: (fftw). ${DESCRIPTION}
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END-INFO-DIR-ENTRY
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EOF
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done
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eautoreconf
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cd "${WORKDIR}"
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cp -R ${P} ${P}-double
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mv ${P} ${P}-single
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}
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src_compile() {
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local myconf="
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--enable-shared
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--enable-type-prefix
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--enable-vec-recurse
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$(use_enable fortran)
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$(use_enable mpi)
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$(use_enable x86 i386-hacks)"
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if use openmp; then
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myconf="${myconf}
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--enable-threads
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--with-openmp"
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elif use threads; then
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myconf="${myconf}
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--enable-threads
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--without-openmp"
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else
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myconf="${myconf}
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--disable-threads
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--without-openmp"
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fi
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cd "${S}-single"
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econf ${myconf} --enable-float
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emake || die "emake for float failed"
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cd "${S}-double"
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econf ${myconf}
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emake || die "emake for double failed"
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}
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src_test() {
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cd "${S}-single"
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emake -j1 check || die "emake check single failed"
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cd "${S}-double"
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emake -j1 check || die "emake check double failed"
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}
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src_install () {
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# both builds are installed in the same place
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# libs are distinguished by prefix (s or d), see docs for details
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cd "${S}-single"
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emake DESTDIR="${D}" install || die "emake install float failed"
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cd "${S}-double"
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emake DESTDIR="${D}" install || die "emake install double failed"
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insinto /usr/include
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doins fortran/fftw_f77.i || die "doins failed"
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dodoc AUTHORS ChangeLog NEWS TODO README README.hacks || die "dodoc failed"
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use doc && dohtml doc/*
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if use float; then
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for f in "${D}"/usr/{include,$(get_libdir)}/*sfft*; do
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ln -s $(basename ${f}) ${f/sfft/fft}
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done
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for f in "${D}"/usr/{include,$(get_libdir)}/*srfft*; do
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ln -s $(basename ${f}) ${f/srfft/rfft}
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done
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else
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for f in "${D}"/usr/{include,$(get_libdir)}/*dfft*; do
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ln -s $(basename ${f}) ${f/dfft/fft}
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done
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for f in "${D}"/usr/{include,$(get_libdir)}/*drfft*; do
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ln -s $(basename ${f}) ${f/drfft/rfft}
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done
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fi
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}
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