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3f2c61f459
Warn if NINJAOPTS specifies "-j" option and a jobserver is available, since it will implicitly disable the jobserver support. Bug: https://bugs.gentoo.org/692576 Signed-off-by: Michał Górny <mgorny@gentoo.org> Part-of: https://github.com/gentoo/gentoo/pull/44539 Closes: https://github.com/gentoo/gentoo/pull/44539 Signed-off-by: Sam James <sam@gentoo.org>
152 lines
3.9 KiB
Bash
152 lines
3.9 KiB
Bash
# Copyright 1999-2025 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: ninja-utils.eclass
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# @MAINTAINER:
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# base-system@gentoo.org
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# @AUTHOR:
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# Michał Górny <mgorny@gentoo.org>
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# Mike Gilbert <floppym@gentoo.org>
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# @SUPPORTED_EAPIS: 7 8
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# @BLURB: common bits to run app-alternatives/ninja builder
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# @DESCRIPTION:
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# This eclass provides a single function -- eninja -- that can be used
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# to run the ninja builder alike emake. It does not define any
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# dependencies, you need to depend on app-alternatives/ninja yourself. Since
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# ninja is rarely used stand-alone, most of the time this eclass will
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# be used indirectly by the eclasses for other build systems (CMake,
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# Meson).
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case ${EAPI} in
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7|8) ;;
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*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
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esac
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if [[ -z ${_NINJA_UTILS_ECLASS} ]]; then
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_NINJA_UTILS_ECLASS=1
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# @ECLASS_VARIABLE: NINJA
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# @PRE_INHERIT
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# @DESCRIPTION:
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# Specify a compatible ninja implementation to be used by eninja().
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# Accepts the following values:
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#
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# - ninja -- use the "ninja" symlink per app-alternatives/ninja
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#
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# - ninja-reference -- use "ninja-reference" for dev-build/ninja
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#
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# - samu -- use "samu" for dev-build/samurai
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#
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# The default is set to "ninja".
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: "${NINJA:=ninja}"
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# @ECLASS_VARIABLE: NINJA_DEPEND
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# @OUTPUT_VARIABLE
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# @DESCRIPTION:
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# Contains a set of build-time dependencies based on the NINJA setting.
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# @ECLASS_VARIABLE: NINJAOPTS
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# @DEFAULT_UNSET
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# @DESCRIPTION:
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# The default set of options to pass to Ninja. Similar to MAKEOPTS,
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# supposed to be set in make.conf. If unset, eninja() will convert
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# MAKEOPTS instead.
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# @ECLASS_VARIABLE: NINJA_VERBOSE
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# @USER_VARIABLE
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# @DESCRIPTION:
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# Set to OFF to disable verbose messages during compilation
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: "${NINJA_VERBOSE:=ON}"
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inherit multiprocessing
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case ${NINJA} in
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ninja)
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NINJA_DEPEND="app-alternatives/ninja"
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;;
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ninja-reference)
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NINJA_DEPEND="dev-build/ninja"
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;;
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samu)
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NINJA_DEPEND="dev-build/samurai"
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;;
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esac
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# @FUNCTION: _ninja_uses_jobserver
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# @DESCRIPTION:
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# Return true if current ${NINJA} has jobserver support and we have one
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# running (via MAKEFLAGS).
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_ninja_uses_jobserver() {
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# ninja supports jobserver via FIFO only
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[[ ${MAKEFLAGS} == *--jobserver-auth=fifo:* ]] || return 1
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case ${NINJA} in
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# if using "ninja", make sure its a symlink to real ninja
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# samu: https://github.com/michaelforney/samurai/issues/71
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ninja)
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if ! has_version -b "app-alternatives/ninja[reference]"; then
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einfo "ninja != ninja-reference, no jobserver support"
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return 1
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fi
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;&
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# plus, it must be at least 1.13.0
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ninja-reference)
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if ! has_version -b ">=dev-build/ninja-1.13"; then
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einfo "ninja >= 1.13 required for jobserver support"
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return 1
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fi
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;;
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*)
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einfo "NINJA=${NINJA}, no jobserver support"
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return 1
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;;
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esac
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einfo "ninja will use the jobserver"
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return 0
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}
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# @FUNCTION: get_NINJAOPTS
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# @DESCRIPTION:
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# Get the value of NINJAOPTS, inferring them from MAKEOPTS if unset.
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get_NINJAOPTS() {
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if [[ -z ${NINJAOPTS+set} ]]; then
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NINJAOPTS="-l$(get_makeopts_loadavg 0)"
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if ! _ninja_uses_jobserver; then
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# ninja only uses jobserver if -j is not passed
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NINJAOPTS+=" -j$(get_makeopts_jobs 999)"
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fi
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elif _ninja_uses_jobserver && [[ ${NINJAOPTS} == *-j* ]]; then
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ewarn "Jobserver detected, but NINJAOPTS specifies -j option."
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ewarn "To enable ninja jobserver support, remove -j from NINJAOPTS."
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fi
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echo "${NINJAOPTS}"
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}
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# @FUNCTION: eninja
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# @USAGE: [<args>...]
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# @DESCRIPTION:
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# Call Ninja, passing the NINJAOPTS (or converted MAKEOPTS), followed
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# by the supplied arguments. This function dies if ninja fails. It
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# also supports being called via 'nonfatal'.
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eninja() {
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case "${NINJA}" in
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ninja|ninja-reference|samu)
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;;
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*)
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ewarn "Unknown value '${NINJA}' for \${NINJA}"
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;;
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esac
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local v
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case "${NINJA_VERBOSE}" in
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OFF) ;;
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*) v="-v"
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esac
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set -- "${NINJA}" ${v} $(get_NINJAOPTS) "$@"
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echo "$@" >&2
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"$@" || die -n "${*} failed"
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}
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fi
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