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# -*-eselect-*- vim: ft=eselect
# Copyright 2019-2023 Gentoo Authors
# Distributed under the terms of the GNU GPL version 2 or later
inherit config tests multilib skel
MODULE="BLAS/CBLAS"
IFACE="blas"
DESCRIPTION="Manage installed alternatives of $MODULE shared objects"
MAINTAINER="lumin@debian.org"
VERSION="0.3"
### helper utility to find all available BLAS/CBLAS implementations
find_targets_in() {
[[ $# -eq 1 ]] || die -q "in which libdir?"
local cand
for cand in "${EROOT}/etc/env.d/blas/$1"/*; do
[[ "config" = $(basename ${cand}) ]] && continue
[[ -r ${cand} ]] && basename ${cand}
done
}
### helper utility to validate a BLAS/CBLAS library directory
validate_blaslibdir() {
[[ -d $1 ]] || return 2 # dir doesn't exist
[[ -r "${1}/libblas.so.3" ]] && [[ -r "${1}/libblas.so" ]] \
&& [[ -r "${1}/libcblas.so.3" ]] && [[ -r "${1}/libcblas.so" ]] \
|| return 1
}
### show action
do_show() {
# do_show -- show both lib64 and lib32 selection
# do_show libxx -- show libxx selection
local libdir cur libdirs=( $(list_libdirs) )
# if manually specified libdirs
if [[ ! $# -eq 0 ]]; then
for libdir in $@; do
has $libdir ${libdirs[@]} || die -q "invalid libdir '$libdir'!"
done
libdirs=( $@ )
fi
for libdir in ${libdirs[@]}; do
[[ ! -d ${EROOT}/usr/$libdir ]] && continue
[[ ! -r ${EROOT}/etc/env.d/blas/${libdir}/config ]] && continue
cur=$(load_config "${EROOT}"/etc/env.d/blas/${libdir}/config CURRENT)
echo ${libdir}: $cur
done
}
### list action
do_list() {
local i cur targets
local libdir libdirs=( $(list_libdirs) )
# if manually specified libdirs
if [[ ! $# -eq 0 ]]; then
for libdir in $@; do
has $libdir ${libdirs[@]} || die -q "invalid libdir '$libdir'!"
done
libdirs=( $@ )
fi
for libdir in ${libdirs[@]}; do
[[ ! -d ${EROOT}/usr/$libdir ]] || [[ -L ${EROOT}/usr/$libdir ]] && continue
targets=( $(find_targets_in $libdir) )
cur=$(load_config "${EROOT}"/etc/env.d/blas/${libdir}/config CURRENT)
write_list_start "Available BLAS/CBLAS ($libdir) candidates:"
for (( i = 0; i < ${#targets[@]}; i++ )); do
[[ ${targets[i]} = $cur ]] \
&& targets[i]=$(highlight_marker "${targets[i]}")
done
write_numbered_list -m "(none found)" "${targets[@]}"
done
}
### validate action
describe_validate() {
echo "validate candidates and remove invalid ones"
}
do_validate() {
local i ldpath targets target candidate
local libdir libdirs=( $(list_libdirs) )
for libdir in ${libdirs[@]}; do
[[ ! -d ${EROOT}/usr/$libdir ]] || [[ -L ${EROOT}/usr/$libdir ]] && continue
targets=( $(find_targets_in $libdir) )
for target in ${targets[@]}; do
candidate=${EROOT}/etc/env.d/blas/${libdir}/${target}
ldpath=$(load_config "$candidate" LDPATH)
if ! validate_blaslibdir "${ROOT}/$ldpath"; then
echo "Removing invalid BLAS/CBLAS candidate ($candidate) ..."
rm -v "$candidate"
fi
done
done
}
### set action
describe_set() {
echo "Activate one of the installed $MODULE implementations"
}
describe_set_parameters() {
echo "[<libdir>] <implementation>"
}
describe_set_options() {
echo "libdir: lib64 or lib32. Will use the native one when omitted."
echo "implementation : implementation name or number (from 'list' action)"
}
do_set() {
local libdirs=( $(list_libdirs) )
local targets libdir ldconf libpath impl
# check argument existence
[[ $# -eq 1 ]] || [[ $# -eq 2 ]] || \
die -q "Please specify [<libdir>] <impl> to activate!"
# read argumenets
if [[ $# -eq 2 ]]; then libdir="$1"; else libdir="$(get_libdir)"; fi
if [[ $# -eq 2 ]]; then impl="$2"; else impl="$1"; fi
# validate arguments
has "$libdir" "${libdirs[@]}" || die -q "Invalid libdir ($libdir) !"
targets=( $(find_targets_in $libdir) )
if ! has "$impl" "${targets[@]}"; then
if [[ ${impl} -gt 0 ]] && [[ ${impl} -le ${#targets[@]} ]]; then
impl=${targets[(${impl} - 1)]}
else
die -q "Invalid impl ($impl) !"
fi
fi
# store the configuration to env.d
store_config "${EROOT}"/etc/env.d/blas/${libdir}/config CURRENT "${impl}"
# generate ld.so.conf file
ldconf="${EROOT}/etc/ld.so.conf.d/81-blas-${libdir}.conf"
libpath=$(load_config ${EROOT}/etc/env.d/blas/${libdir}/${impl} LDPATH)
truncate -s0 "$ldconf"
echo "# Auto-generated by eselect::blas. DON'T EDIT." >> "$ldconf"
echo "$libpath" >> "$ldconf"
# refresh cache. env-update will call ldconfig (see
# portage::env_update.py) so we don't need to call it explicitly.
env-update
}
### add action
describe_add_parameters() {
echo "<libdir> <dir> <impl>"
}
describe_add_options() {
echo "libdir : library directory where $MODULE implementation is installed (lib, lib64, etc.)"
echo "dir : directory containing lib{,c}blas.so{.3}"
echo "impl : name of the $MODULE implementation"
}
do_add() {
[[ $# -eq 3 ]] \
|| die -q "Please specify <libdir> <dir> <impl> to activate!"
validate_blaslibdir "${ROOT}/$2" || die -q "invalid blas libdir!"
store_config "${EROOT}/etc/env.d/blas/$1/$3" LDPATH "$2"
}
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