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# Copyright 1999-2004 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/app-sci/lapack-atlas/lapack-atlas-3.6.0.ebuild,v 1.5 2004/06/10 01:58:14 george Exp $
inherit eutils
DESCRIPTION="Full LAPACK implementation using available ATLAS routines"
HOMEPAGE="http://math-atlas.sourceforge.net/"
MY_PN=${PN/lapack-/}
SRC_URI1="mirror://sourceforge/math-atlas/${MY_PN}${PV}.tar.bz2"
SRC_URI2="http://www.netlib.org/lapack/lapack.tgz"
SRC_URI="${SRC_URI1} ${SRC_URI2}"
LICENSE="BSD"
SLOT="0"
KEYWORDS="~x86 ~amd64"
IUSE="ifc doc"
DEPEND="virtual/glibc
>=sys-devel/libtool-1.5
=app-sci/blas-atlas-3.6.0
app-sci/lapack-config
ifc? ( dev-lang/ifc )"
RDEPEND="virtual/glibc
virtual/blas
ifc? ( dev-lang/ifc )" # Need Intel runtime libraries
PROVIDE="virtual/lapack"
S=${WORKDIR}/ATLAS
S_LAPACK=${WORKDIR}/LAPACK
TOP_PATH="${DESTTREE}/lib/lapack"
# Path where libraries will be installed:
RPATH="${TOP_PATH}/atlas"
ifc_info() {
if [ -z "${IFCFLAGS}" ]
then
einfo
einfo "You may want to set some ifc optimization flags by running this"
einfo "ebuild as, for example:"
einfo
einfo "IFCFLAGS=\"-O3 -tpp7 -xW\" emerge lapack-atlas"
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
fi
}
pkg_setup() {
# We need g77 to compile the LAPACK routines from ATLAS.
# `use ifc` only causes the non-ATLAS routines (from the
# reference set) to be built with 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() {
use ifc && ifc_info
unpack ${A}
cd ${WORKDIR}
epatch ${FILESDIR}/atlas3.6.0-shared-libs.patch.bz2
epatch ${FILESDIR}/lapack-20020531-20021004.patch.bz2
epatch ${FILESDIR}/lapack-gentoo.patch
cp ${FILESDIR}/war ${S}
chmod a+x ${S}/war
}
atlas_fail() {
eerror
eerror "ATLAS auto-config failed."
eerror "Please run 'interactive=1 emerge lapack-atlas' to configure"
eerror "manually."
eerror
die "ATLAS auto-config failed."
}
src_compile() {
GCC="gcc"
cd ${S}
if [ -n "${interactive}" ]
then
echo "${interactive}"
make config CC="${GCC} -DUSE_LIBTOOL -DINTERACTIVE" || die
else
# Use ATLAS defaults for all questions:
(echo | make config CC="${GCC} -DUSE_LIBTOOL") || atlas_fail
fi
TMPSTR=$(ls Make.Linux*)
ATLAS_ARCH=${TMPSTR#'Make.'}
CC="libtool --mode=compile --tag=CC ${GCC} -I/usr/include/atlas"
cd ${S}/src/lapack/${ATLAS_ARCH}
make lib CC="${CC}" || die
cd ${S}/interfaces/lapack/C/src/${ATLAS_ARCH}
make lib CC="${CC}" || die
cd ${S}/interfaces/lapack/F77/src/${ATLAS_ARCH}
make lib CC="${CC}" F77="libtool --mode=compile --tag=F77 g77" || die
cd ${S_LAPACK}
if use ifc
then
FC="ifc"
FFLAGS="${IFCFLAGS}"
NOOPT="-O0" # Do NOT change this. It is applied to two files with
# routines to determine machine constants.
else
FC="g77"
FFLAGS="${CFLAGS}"
NOOPT=""
fi
make lapacklib FORTRAN="libtool --mode=compile --tag=F77 ${FC}" OPTS="${FFLAGS}" \
NOOPT="${NOOPT}" || die
cd ${S_LAPACK}/SRC
cp -sf ${S}/gentoo/liblapack.a/*.o .
cp -sf ${S}/gentoo/liblapack.a/*.lo .
cp -sf ${S}/gentoo/liblapack.a/.libs/*.o .libs/
if use ifc
then
ifc ${FFLAGS} -shared .libs/*.o -Wl,-soname -Wl,liblapack.so.0 \
-o liblapack.so.0.0.0 -lblas -lcblas -latlas \
-L$(gcc-config -L) -lg2c
ar cru liblapack.a *.o
ranlib liblapack.a
else
libtool --mode=link --tag=CC ${GCC} -o liblapack.la *.lo \
-rpath ${RPATH} -lblas -lcblas -latlas -lg2c
fi
}
src_install () {
dodir ${RPATH}
cd ${S_LAPACK}/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-ATLAS
insinto /usr/include/atlas
cd ${S}/include
doins clapack.h
cd ${S}
dodoc README
cd ${S}/doc
dodoc AtlasCredits.txt ChangeLog
if use doc;
then
dodoc lapackqref.ps
fi
}
pkg_postinst() {
/usr/bin/lapack-config ATLAS
einfo
einfo "To link with ATLAS LAPACK from C or Fortran, simply use:"
einfo
einfo "-llapack"
einfo
einfo "C users: your header is /usr/include/atlas/clapack.h"
einfo
}
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