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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/sci-libs/lapack-reference/lapack-reference-3.0.ebuild,v 1.2 2004/12/29 18:34:39 ribosome Exp $
inherit eutils
MyPN=${PN/-reference/}
DESCRIPTION="FORTRAN reference implementation of LAPACK Linear Algebra PACKage"
HOMEPAGE="http://www.netlib.org/lapack/index.html"
SRC_URI="http://www.netlib.org/lapack/${MyPN}.tgz
mirror://gentoo/${MyPN}-20020531-20021004.patch.bz2
mirror://gentoo/${MyPN}-gentoo.patch"
LICENSE="lapack"
SLOT="0"
KEYWORDS="~x86 ~amd64"
IUSE="ifc"
DEPEND="sys-devel/libtool
sci-libs/lapack-config
ifc? ( dev-lang/ifc )"
RDEPEND="virtual/blas
ifc? ( dev-lang/ifc )" # Need ifc runtime libraries
PROVIDE="virtual/lapack"
S=${WORKDIR}/LAPACK
ifc_info() {
if [ -z "${IFCFLAGS}" ]
then
einfo
einfo "You may want to set some ifc optimization flags by running this"
einfo "ebuild as, for example, \`IFCFLAGS=\"-O3 -tpp7 -xW\" emerge blas\`"
einfo "(Pentium 4 exclusive optimizations)."
einfo
einfo "ifc defaults to -O2, with code tuned for Pentium 4, but that"
einfo "will run on any processor."
einfo
einfo "Beware that ifc's -O3 is very aggressive, sometimes resulting in"
einfo "significantly worse performance."
einfo
epause 5
fi
}
pkg_setup() {
# This version of lapack *can* be build completely with ifc
use ifc || \
if [ -z `which g77` ]; then
eerror "g77 not found on the system!"
eerror "Please add f77 to your USE flags and reemerge gcc!"
die
fi
}
src_unpack() {
unpack ${A}
epatch ${DISTDIR}/lapack-20020531-20021004.patch.bz2
epatch ${DISTDIR}/lapack-gentoo.patch
}
src_compile() {
TOP_PATH=${DESTTREE}/lib/lapack
# Library will be installed in RPATH:
RPATH=${TOP_PATH}/reference
if use ifc
then
FC="ifc"
FFLAGS="${IFCFLAGS}"
NOOPT="-O0" # Do NOT change this. It is applied to two files with
# routines to determine machine constants.
ifc_info
else
FC="g77"
FFLAGS="${CFLAGS}"
NOOPT=""
# libg2c is required to link with liblapack.so using ifc:
DEP_LIBS="-lg2c"
fi
DEP_LIBS="${DEP_LIBS} -lblas"
cd ${S}/SRC
make all \
FORTRAN="libtool --mode=compile --tag=F77 ${FC}"\
OPTS="${FFLAGS}"\
NOOPT="${NOOPT}" \
|| die
if use ifc
then
${FC} -shared ${FFLAGS} *.lo ${DEP_LIBS} \
-Wl,-soname -Wl,liblapack.so.0 -o liblapack.so.0.0.0 \
-Vaxlib # Intel portability library that provides the etime function
ar cru liblapack.a *.o
ranlib liblapack.a
else
libtool --mode=link --tag=CC ${FC} ${FFLAGS} -o liblapack.la *.lo \
-rpath ${RPATH} ${DEP_LIBS}
fi
}
src_install() {
dodir ${RPATH}
cd ${S}/SRC
if use ifc
then
strip --strip-unneeded liblapack.so.0.0.0
strip --strip-debug liblapack.a
exeinto ${RPATH}
doexe liblapack.so.0.0.0
dosym liblapack.so.0.0.0 ${RPATH}/liblapack.so.0
dosym liblapack.so.0.0.0 ${RPATH}/liblapack.so
insinto ${RPATH}
doins liblapack.a
else
libtool --mode=install install -s liblapack.la ${D}/${RPATH}
fi
insinto ${TOP_PATH}
doins ${FILESDIR}/f77-reference
dodoc ${S}/README
}
pkg_postinst() {
${DESTTREE}/bin/lapack-config reference
}
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