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# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: ninja-utils.eclass
# @MAINTAINER:
# Michał Górny <mgorny@gentoo.org>
# Mike Gilbert <floppym@gentoo.org>
# @AUTHOR:
# Michał Górny <mgorny@gentoo.org>
# Mike Gilbert <floppym@gentoo.org>
# @SUPPORTED_EAPIS: 7 8
# @BLURB: common bits to run dev-util/ninja builder
# @DESCRIPTION:
# This eclass provides a single function -- eninja -- that can be used
# to run the ninja builder alike emake. It does not define any
# dependencies, you need to depend on dev-util/ninja yourself. Since
# ninja is rarely used stand-alone, most of the time this eclass will
# be used indirectly by the eclasses for other build systems (CMake,
# Meson).
case ${EAPI} in
7|8) ;;
*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
esac
if [[ -z ${_NINJA_UTILS_ECLASS} ]]; then
_NINJA_UTILS_ECLASS=1
# @ECLASS_VARIABLE: NINJA
# @PRE_INHERIT
# @DESCRIPTION:
# Specify a compatible ninja implementation to be used by eninja().
# At this point only "ninja" and "samu" are explicitly supported,
# but other values can be set where NINJA_DEPEND will then be set
# to a blank variable.
# The default is set to "ninja".
: ${NINJA:=ninja}
# @ECLASS_VARIABLE: NINJA_DEPEND
# @OUTPUT_VARIABLE
# @DESCRIPTION:
# Contains a set of build-time depenendencies based on the NINJA setting.
# @ECLASS_VARIABLE: NINJAOPTS
# @DEFAULT_UNSET
# @DESCRIPTION:
# The default set of options to pass to Ninja. Similar to MAKEOPTS,
# supposed to be set in make.conf. If unset, eninja() will convert
# MAKEOPTS instead.
inherit multiprocessing
case "${NINJA}" in
ninja)
NINJA_DEPEND=">=dev-util/ninja-1.8.2"
;;
samu)
NINJA_DEPEND="dev-util/samurai"
;;
*)
NINJA_DEPEND=""
;;
esac
# @FUNCTION: get_NINJAOPTS
# @DESCRIPTION:
# Get the value of NINJAOPTS, inferring them from MAKEOPTS if unset.
get_NINJAOPTS() {
if [[ -z ${NINJAOPTS+set} ]]; then
NINJAOPTS="-j$(makeopts_jobs "${MAKEOPTS}" 999) -l$(makeopts_loadavg "${MAKEOPTS}" 0)"
fi
echo "${NINJAOPTS}"
}
# @FUNCTION: eninja
# @USAGE: [<args>...]
# @DESCRIPTION:
# Call Ninja, passing the NINJAOPTS (or converted MAKEOPTS), followed
# by the supplied arguments. This function dies if ninja fails. It
# also supports being called via 'nonfatal'.
eninja() {
[[ -n "${NINJA_DEPEND}" ]] || ewarn "Unknown value '${NINJA}' for \${NINJA}"
set -- "${NINJA}" -v $(get_NINJAOPTS) "$@"
echo "$@" >&2
"$@" || die -n "${*} failed"
}
fi
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