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# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
FORTRAN_NEEDED=fortran
inherit fortran-2 toolchain-funcs
LAPACKP=lapack-3.6.0.tgz
DESCRIPTION="Automatically Tuned Linear Algebra Software"
HOMEPAGE="https://math-atlas.sourceforge.net"
SRC_URI="https://downloads.sourceforge.net/math-atlas/${PN}${PV}.tar.bz2
fortran? ( lapack? ( http://www.netlib.org/lapack/${LAPACKP} ) )"
S="${WORKDIR}/ATLAS"
LICENSE="BSD"
SLOT="0"
KEYWORDS="amd64 ~x86 ~amd64-linux ~x86-linux"
IUSE="doc fortran generic lapack static-libs threads"
PATCHES=(
"${FILESDIR}/${P}-x32-support.patch"
"${FILESDIR}/${P}-format-security.patch"
)
pkg_setup() {
local _cpufreq
for _cpufreq in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do
if [ -f ${_cpufreq} ]; then
if ! grep -q performance ${_cpufreq}; then
echo 2> /dev/null performance > ${_cpufreq} || \
die "${PN} needs all cpu set to performance"
fi
fi
done
use fortran && fortran-2_pkg_setup
}
src_configure() {
# hack needed to trick the flaky gcc detection
local mycc="$(type -P $(tc-getCC))"
[[ ${mycc} == *gcc* ]] && mycc=gcc
atlas_configure() {
local myconf=(
--prefix="/usr"
--libdir="/usr/$(get_libdir)"
--incdir="/usr/include"
--cc="$(tc-getCC)"
"-D c -DWALL"
"-C acg '${mycc}'"
"-F acg '${CFLAGS}'"
"-Ss pmake '\$(MAKE) ${MAKEOPTS}'"
)
# OpenMP shown to decreased performance over POSIX threads
# (at least in 3.9.x, see atlas-dev mailing list)
if use threads; then
if use generic; then # 2 threads is most generic
myconf+=( "-t 2" "-Si omp 0" )
else
myconf+=( "-t -1" "-Si omp 0" )
fi
else
myconf+=( "-t 0" "-Si omp 0" )
fi
if use amd64 || use ppc64 || use sparc; then
if [ ${ABI} = amd64 ] || [ ${ABI} = ppc64 ] || [ ${ABI} = sparc64 ] ; then
myconf+=( "-b 64" )
elif [ ${ABI} = x86 ] || [ ${ABI} = ppc ] || [ ${ABI} = sparc32 ] ; then
myconf+=( "-b 32" )
elif [ ${ABI} = x32 ] ; then
myconf+=( "-b 48" )
else
myconf+=( "-b 64" )
fi
elif use ppc || use x86; then
myconf+=( "-b 32" )
fi
if use fortran; then
myconf+=(
"-C if '$(type -P $(tc-getFC))'"
"-F if '${FFLAGS}'"
)
if use lapack; then
myconf+=(
"-Si latune 1"
"--with-netlib-lapack-tarfile=${DISTDIR}/${LAPACKP}"
)
else
myconf+=( "-Si latune 0" )
fi
else
myconf+=( "-Si latune 0" "--nof77" )
fi
# generic stuff found by make make xprint_enums in atlas build dir
# basically assuming sse2+sse1 and 2 threads max
use generic && use x86 && myconf+=( "-V 384 -A 13")
use generic && use amd64 && myconf+=( "-V 384 -A 24")
local confdir="${S}_${1}"; shift
myconf+=( $@ )
mkdir "${confdir}" && cd "${confdir}"
# for debugging
echo ${myconf[@]} > myconf.out
"${S}"/configure ${myconf[@]} || die "configure in ${confdir} failed"
}
atlas_configure shared "-Fa alg -fPIC" ${EXTRA_ECONF}
use static-libs && atlas_configure static ${EXTRA_ECONF}
}
src_compile() {
atlas_compile() {
pushd "${S}_${1}" > /dev/null
# atlas does its own parallel builds
emake -j1 build
cd lib
emake libclapack.a
[[ -e libptcblas.a ]] && emake libptclapack.a
popd > /dev/null
}
atlas_compile shared
use static-libs && atlas_compile static
}
src_test() {
cd "${S}_shared"
emake -j1 check time
}
# transform a static archive into a shared library and install them
# atlas_install_libs <mylib.a> [extra link flags]
atlas_install_libs() {
local libname=$(basename ${1%.*})
einfo "Installing ${libname}"
local soname=${libname}.so.$(ver_cut 1)
shift
pushd "${S}_shared"/lib > /dev/null
${LINK:-$(tc-getCC)} ${LDFLAGS} -shared -Wl,-soname=${soname} \
-Wl,--whole-archive ${libname}.a -Wl,--no-whole-archive \
"$@" -o ${soname} || die "Creating ${soname} failed"
dolib.so ${soname}
ln -s ${soname} ${soname%.*}
dosym ${soname} /usr/$(get_libdir)/${soname%.*}
popd > /dev/null
use static-libs && dolib.a "${S}_static"/lib/${libname}.a
}
src_install() {
cd "${S}_shared/lib"
# rename to avoid collision with other packages
local l
for l in {,c}{blas,lapack}; do
if [[ -e lib${l}.a ]]; then
mv lib{,atl}${l}.a
use static-libs && mv "${S}"_static/lib/lib{,atl}${l}.a
fi
done
[[ -e libptcblas.a ]] && PTLIBS="-lpthread"
# atlas
atlas_install_libs libatlas.a -lm ${PTLIBS}
# cblas
atlas_install_libs libatlcblas.a -lm -L. -latlas
# cblas threaded
[[ -e libptcblas.a ]] && \
atlas_install_libs libptcblas.a -lm -L. -latlas ${PTLIBS}
if use lapack; then
# clapack
atlas_install_libs libatlclapack.a -lm -L. -latlas -latlcblas
# clapack threaded
[[ -e libptclapack.a ]] && \
atlas_install_libs libptclapack.a -lm -L. -latlas -lptcblas ${PTLIBS}
fi
if use fortran; then
LINK=$(tc-getF77)
# blas
atlas_install_libs libf77blas.a -lm -L. -latlas
# blas threaded
[[ -e libptf77blas.a ]] && \
atlas_install_libs libptf77blas.a -lm -L. -latlas ${PTLIBS}
if use lapack; then
# lapack
atlas_install_libs libatllapack.a \
-lm -L. -latlas -latlcblas -lf77blas
# lapack threaded
[[ -e libptlapack.a ]] && \
atlas_install_libs libptlapack.a -lm -L. -latlas -lptcblas -lptf77blas ${PTLIBS}
fi
fi
cd "${S}"
insinto /usr/include/${PN}
doins include/*.h
cd "${S}/doc"
dodoc INDEX.txt AtlasCredits.txt ChangeLog
use doc && dodoc atlas*pdf cblas.pdf cblasqref.pdf
use doc && use fortran && dodoc f77blas*pdf
use doc && use fortran && use lapack && dodoc *lapack*pdf
}
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