1b6209a9bSSimon J. Gerraty# This target is "special". 2b6209a9bSSimon J. Gerraty# 3b6209a9bSSimon J. Gerraty# The actual work is done via another target; 4b6209a9bSSimon J. Gerraty# UNIVERSE_TARGET_RELDIR is used to identify it. 5b6209a9bSSimon J. Gerraty# 6b6209a9bSSimon J. Gerraty# We leverage dirdeps.mk to run a sub-make per 7b6209a9bSSimon J. Gerraty# MACHINE/ARCH to each build ${UNIVERSE_TARGET_RELDIR} 8b6209a9bSSimon J. Gerraty# in meta mode. 9b6209a9bSSimon J. Gerraty# 10b6209a9bSSimon J. Gerraty# We simply override the level at which dirdeps.mk normally does 11b6209a9bSSimon J. Gerraty# its thing, and give it a DIRDEPS list that corresponds to 12b6209a9bSSimon J. Gerraty# ${UNIVERSE_TARGET_RELDIR}.${TARGET_SPEC} for each TARGET_SPEC we 13b6209a9bSSimon J. Gerraty# want. 14b6209a9bSSimon J. Gerraty# 15b6209a9bSSimon J. Gerraty# This allows the computation of dependencies for each ${TARGET_SPEC} 16b6209a9bSSimon J. Gerraty# to happen in parallel - avoiding a very long startup time. 17b6209a9bSSimon J. Gerraty# We can even export each sub-make to a different machine if using a 18b6209a9bSSimon J. Gerraty# cluster. 19b6209a9bSSimon J. Gerraty# 20b6209a9bSSimon J. Gerraty# The above works fine so long as our sub-makes remain independent. 21b6209a9bSSimon J. Gerraty# That is; none of them attempts to visit any directory for a machine 22b6209a9bSSimon J. Gerraty# other than the TARGET_SPEC we gave it. 23b6209a9bSSimon J. Gerraty# For example; to build some tool for the pseudo machine "host". 24b6209a9bSSimon J. Gerraty# To avoid that, our Makefile.depend lists all the hosttools we might 25b6209a9bSSimon J. Gerraty# need and these will thus be built before we launch the 26b6209a9bSSimon J. Gerraty# ${UNIVERSE_TARGET_RELDIR} sub-makes. 27b6209a9bSSimon J. Gerraty# Further we add a filter to skip any "host" dirdeps during those 28b6209a9bSSimon J. Gerraty# sub-makes. 29b6209a9bSSimon J. Gerraty# 30b6209a9bSSimon J. Gerraty# 31b6209a9bSSimon J. Gerraty 32b6209a9bSSimon J. Gerraty# this is the RELDIR of the target we build 33*61ad1ff5SSimon J. GerratyUNIVERSE_TARGET_RELDIR?= targets/pseudo/the-lot 34b6209a9bSSimon J. Gerraty 35b6209a9bSSimon J. Gerraty# the list of machines 36b6209a9bSSimon J. GerratyTARGET_MACHINE_LIST = i386 amd64 37b6209a9bSSimon J. Gerraty 38b6209a9bSSimon J. Gerraty# avoid ../Makefile.inc defining this 39b6209a9bSSimon J. Gerratyall: 40b6209a9bSSimon J. Gerraty 41b6209a9bSSimon J. Gerraty.include "../Makefile.inc" 42b6209a9bSSimon J. Gerraty 43b6209a9bSSimon J. Gerraty.if ${.MAKE.LEVEL} > 0 44b6209a9bSSimon J. Gerraty# ok our prerequisites have been built 45b6209a9bSSimon J. Gerraty.if !defined(UNIVERSE_GUARD) 46b6209a9bSSimon J. Gerraty# just incase we end up back here, 47b6209a9bSSimon J. Gerraty# we cannot rely on .MAKE.LEVEL as we normally would 48b6209a9bSSimon J. GerratyUNIVERSE_GUARD=1 49b6209a9bSSimon J. Gerraty.export UNIVERSE_GUARD 50b6209a9bSSimon J. Gerraty 51b6209a9bSSimon J. Gerraty# we want to re-use dirdeps 52b6209a9bSSimon J. Gerraty_DIRDEP_USE_LEVEL = ${.MAKE.LEVEL} 53b6209a9bSSimon J. Gerraty 54b6209a9bSSimon J. Gerraty# we want our sub-makes to think they are level 0 55b6209a9bSSimon J. Gerraty# and we don't want failure of one to stop all. 56b6209a9bSSimon J. GerratyDIRDEP_USE_ENV= \ 57b6209a9bSSimon J. Gerraty MAKELEVEL=0 \ 58b6209a9bSSimon J. Gerraty MAKE_JOB_ERROR_TOKEN=no 59b6209a9bSSimon J. Gerraty 60b6209a9bSSimon J. Gerraty 61b6209a9bSSimon J. Gerraty_target_specs:= ${TARGET_MACHINE_LIST:@m@${TARGET_ARCHES_$m:U$m:@a@$m,$a@}@:O:u} 62b6209a9bSSimon J. Gerraty 63b6209a9bSSimon J. GerratyDIRDEPS:= ${_target_specs:@t@${UNIVERSE_TARGET_RELDIR}.$t@} 64b6209a9bSSimon J. Gerraty 65b6209a9bSSimon J. Gerratyall: dirdeps 66b6209a9bSSimon J. Gerraty 67b6209a9bSSimon J. Gerraty.include <dirdeps.mk> 68b6209a9bSSimon J. Gerraty.endif 69b6209a9bSSimon J. Gerraty.endif 70