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