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https://github.com/freebsd/freebsd-src
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302da1a3d3
Lots of new unit-tests increase code coverage. Lots of refactoring, cleanup and simlpification to reduce code size. Fixes for Bug 223564 and 245807 Updates to dirdeps.mk and meta2deps.py
178 lines
5.9 KiB
Makefile
178 lines
5.9 KiB
Makefile
# $Id: dirdeps-cache-update.mk,v 1.22 2020/09/10 00:14:38 sjg Exp $
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#
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# @(#) Copyright (c) 2020, Simon J. Gerraty
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#
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# This file is provided in the hope that it will
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# be of use. There is absolutely NO WARRANTY.
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# Permission to copy, redistribute or otherwise
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# use this file is hereby granted provided that
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# the above copyright notice and this notice are
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# left intact.
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#
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# Please send copies of changes and bug-fixes to:
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# sjg@crufty.net
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#
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##
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#
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# This makefile deals with the updating of STATIC_DIRDEPS_CACHE.
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# Some targets are so huge that computing dirdeps takes a significant
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# amount of time. For such targets a STATIC_DIRDEPS_CACHE can make
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# sense.
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#
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# If the target is represented by targets/pseudo/production
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# it's normal DIRDEPS would be in
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# targets/pseudo/production/Makefile.depend
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# and STATIC_DIRDEPS_CACHE would be
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# targets/pseudo/production/Makefile.dirdeps.cache
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# which is simply initialized by copying dirdeps.cache.production
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# from $OBJTOP
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#
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# When dirdeps-targets.mk is initializing DIRDEPS it will look for
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# Makefile.dirdeps.cache and unless told not to
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# (MK_STATIC_DIRDEPS_CACHE=no) will use it as DIRDEPS_CACHE.
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#
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# If MK_STATIC_DIRDEPS_CACHE_UPDATE is "yes", then this makefile
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# comes into play.
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#
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# We usually get included from local.dirdeps.mk
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# as well as Makefile.depend of RELDIR with a static Makefile.dirdeps.cache
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#
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# If we see that STATIC_DIRDEPS_CACHE is in use, we need to hook a
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# cache-update target into the build to regenerate dirdeps.cache
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# in parallel with the rest of the build.
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# If MK_STATIC_DIRDEPS_CACHE_UPDATE_IMMEDIATE is "yes" we update
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# STATIC_DIRDEPS_CACHE as soon as the update is ready,
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# otherwise it will be done at the end of the build.
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#
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# If STATIC_DIRDEPS_CACHE is not in use, but a DIRDEPS_CACHE is,
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# then we need do nothing except export STATIC_DIRDEPS_CACHE and
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# DYNAMIC_DIRDEPS_CACHE for use when we are include during the visit
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# to the ultimate target (targets/pseudo/production).
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#
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# Regardless of which happens, when included at .MAKE.LEVEL > 0
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# for a target other than cache-update we simply copy
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# DYNAMIC_DIRDEPS_CACHE to STATIC_DIRDEPS_CACHE with some optional
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# filtering.
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#
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# If we are included for the target cache-update we take care of
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# running dirdeps.mk again to generate the DYNAMIC_DIRDEPS_CACHE.
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#
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.if !target(_${.PARSEFILE}_)
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_${.PARSEFILE}_: .NOTMAIN
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STATIC_CACHE_SED += \
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-e '/Autogenerated/s,-.*,- edit with care!,' \
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-e '/cache-update/d'
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STATIC_DIRDEPS_CACHE_UPDATE_SCRIPT ?= \
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{ echo Saving ${DYNAMIC_DIRDEPS_CACHE} as ${STATIC_DIRDEPS_CACHE}; \
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sed ${STATIC_CACHE_SED} ${DYNAMIC_DIRDEPS_CACHE} > ${STATIC_DIRDEPS_CACHE}; }
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.endif
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.if ${MK_DIRDEPS_CACHE:Uno} == "yes"
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.if ${MK_STATIC_DIRDEPS_CACHE_UPDATE:Uno} == "yes"
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.if ${_debug_reldir:U0} || ${DEBUG_DIRDEPS:U:Mcache*} != ""
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_debug_cache = 1
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.else
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_debug_cache = 0
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.endif
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.if ${.MAKE.LEVEL} == 0 && !make(cache-update)
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.if ${_debug_cache}
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.info ${MK_STATIC_DIRDEPS_CACHE_UPDATE MK_STATIC_DIRDEPS_CACHE MK_DIRDEPS_CACHE DIRDEPS_CACHE STATIC_DIRDEPS_CACHE:L:@v@$v=${$v}@}
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.endif
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.if ${MK_STATIC_DIRDEPS_CACHE} == "yes" && defined(STATIC_DIRDEPS_CACHE) && exists(${STATIC_DIRDEPS_CACHE})
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.if !make(dirdeps) && !target(cache_update_dirdep)
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# We are using static cache and this is the only look we will get.
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# We want to generate an updated cache while we build
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# so need to hook cache-update to dirdeps now.
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# Note: we are running as a sibling to dirdeps-cached,
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# attempting to do this in that context is problematic.
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# One of these should exist - to actually kick off the cache generation
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.for d in ${STATIC_DIRDEPS_CACHE:H}/cache-update ${STATIC_DIRDEPS_CACHE:H:H}/cache-update ${STATIC_DIRDEPS_CACHE:H:H:H}/cache-update
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.if exists($d)
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cache_update_dirdep ?= $d.${TARGET_SPEC}
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.endif
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.endfor
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dirdeps cache_update_dirdep: ${cache_update_dirdep}
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${cache_update_dirdep}: _DIRDEP_USE
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DYNAMIC_DIRDEPS_CACHE := ${OBJTOP}/dirdeps.cache.${STATIC_DIRDEPS_CACHE:H:T}-update
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.export DYNAMIC_DIRDEPS_CACHE STATIC_DIRDEPS_CACHE
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.endif # make(dirdeps)
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.endif # MK_*
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.endif # .MAKE.LEVEL 0
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.if ${.MAKE.LEVEL} > 0 && ${.CURDIR:T} == "cache-update"
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# we are the background update shim
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.if ${_debug_cache}
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.info level ${.MAKE.LEVEL}: ${MK_DIRDEPS_CACHE DYNAMIC_DIRDEPS_CACHE STATIC_DIRDEPS_CACHE:L:@v@$v=${$v}@}
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.endif
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all: cache-build
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cache-build: .META
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@set -x; MAKELEVEL=0 \
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${.MAKE} -C ${SRCTOP} -f ${RELDIR}/Makefile cache-update \
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-DWITHOUT_STATIC_DIRDEPS_CACHE_UPDATE
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.endif # cache-update
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.elif ${.MAKE.LEVEL} == 0 && make(cache-update) && !target(cache-update)
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# we were invoked above
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# we just leverage dirdeps.mk
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BUILD_DIRDEPS_TARGETS := ${STATIC_DIRDEPS_CACHE:H:T}
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DIRDEPS := ${STATIC_DIRDEPS_CACHE:H:S,^${SRCTOP}/,,}.${TARGET_SPEC}
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DIRDEPS_CACHE := ${DYNAMIC_DIRDEPS_CACHE}
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.if ${DEBUG_DIRDEPS:U:Mcache*} != ""
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.info level 0: ${MK_DIRDEPS_CACHE DIRDEPS_CACHE DIRDEPS:L:@v@$v=${$v}@}
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.endif
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# so cache-built below can check on us
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x!= echo; echo ${.MAKE.PID} > ${DIRDEPS_CACHE}.new.pid
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cache-update: ${DIRDEPS_CACHE}
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@rm -f ${DIRDEPS_CACHE}.new.pid
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.if ${MK_STATIC_DIRDEPS_CACHE_UPDATE_IMMEDIATE:Uno} == "yes"
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${STATIC_DIRDEPS_CACHE_UPDATE_SCRIPT}
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.endif
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all:
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.include <dirdeps.mk>
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.endif # MK_STATIC_DIRDEPS_CACHE_UPDATE
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.endif # MK_DIRDEPS_CACHE
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.if ${.MAKE.LEVEL} > 0 && ${MK_STATIC_DIRDEPS_CACHE_UPDATE:Uno} == "yes" && \
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${STATIC_DIRDEPS_CACHE:Uno:H} == "${SRCTOP}/${RELDIR}"
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.if !defined(DYNAMIC_DIRDEPS_CACHE)
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all:
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.else
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# This is the easy bit, time to save the cache
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all: cache-update
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# ensure the cache update is completed
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cache-built:
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@test -s ${DYNAMIC_DIRDEPS_CACHE}.new || exit 0; \
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pid=`cat ${DYNAMIC_DIRDEPS_CACHE}.new.pid 2> /dev/null`; \
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test $${pid:-0} -gt 1 || exit 0; \
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echo "Waiting for $$pid to finish ${DYNAMIC_DIRDEPS_CACHE} ..."; \
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while 'kill' -0 $$pid; do sleep 30; done > /dev/null 2>&1
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cache-update: cache-built
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.if ${MK_STATIC_DIRDEPS_CACHE_UPDATE_IMMEDIATE:Uno} == "no"
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@test ! -s ${DYNAMIC_DIRDEPS_CACHE} || \
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${STATIC_DIRDEPS_CACHE_UPDATE_SCRIPT}
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.endif
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.endif
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.endif
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