1 # $Id: dirdeps.mk,v 1.37 2014/10/15 06:31:43 sjg Exp $
3 # Copyright (c) 2010-2013, Juniper Networks, Inc.
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
9 # 1. Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
11 # 2. Redistributions in binary form must reproduce the above copyright
12 # notice, this list of conditions and the following disclaimer in the
13 # documentation and/or other materials provided with the distribution.
15 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 # Much of the complexity here is for supporting cross-building.
28 # If a tree does not support that, simply using plain Makefile.depend
29 # should provide sufficient clue.
30 # Otherwise the recommendation is to use Makefile.depend.${MACHINE}
33 # Note: this file gets multiply included.
34 # This is what we do with DIRDEPS
37 # This is a list of directories - relative to SRCTOP, it is
38 # normally only of interest to .MAKE.LEVEL 0.
39 # In some cases the entry may be qualified with a .<machine>
40 # or .<target_spec> suffix (see TARGET_SPEC_VARS below),
41 # for example to force building something for the pseudo
42 # machines "host" or "common" regardless of current ${MACHINE}.
44 # All unqualified entries end up being qualified with .${TARGET_SPEC}
45 # and partially qualified (if TARGET_SPEC_VARS has multiple
46 # entries) are also expanded to a full .<target_spec>.
47 # The _DIRDEP_USE target uses the suffix to set TARGET_SPEC
48 # correctly when visiting each entry.
50 # The fully qualified directory entries are used to construct a
51 # dependency graph that will drive the build later.
53 # Also, for each fully qualified directory target, we will search
54 # using ${.MAKE.DEPENDFILE_PREFERENCE} to find additional
55 # dependencies. We use Makefile.depend (default value for
56 # .MAKE.DEPENDFILE_PREFIX) to refer to these makefiles to
57 # distinguish them from others.
59 # Each Makefile.depend file sets DEP_RELDIR to be the
60 # the RELDIR (path relative to SRCTOP) for its directory, and
61 # since each Makefile.depend file includes dirdeps.mk, this
62 # processing is recursive and results in .MAKE.LEVEL 0 learning the
63 # dependencies of the tree wrt the initial directory (_DEP_RELDIR).
66 # Indicates whether .MAKE.LEVEL 0 builds anything:
67 # if "no" sub-makes are used to build everything,
68 # if "yes" sub-makes are only used to build for other machines.
69 # It is best to use "no", but this can require fixing some
70 # makefiles to not do anything at .MAKE.LEVEL 0.
73 # The default value is just MACHINE, and for most environments
74 # this is sufficient. The _DIRDEP_USE target actually sets
75 # both MACHINE and TARGET_SPEC to the suffix of the current
76 # target so that in the general case TARGET_SPEC can be ignored.
78 # If more than MACHINE is needed then sys.mk needs to decompose
79 # TARGET_SPEC and set the relevant variables accordingly.
80 # It is important that MACHINE be included in and actually be
81 # the first member of TARGET_SPEC_VARS. This allows other
82 # variables to be considered optional, and some of the treatment
83 # below relies on MACHINE being the first entry.
84 # Note: TARGET_SPEC cannot contain any '.'s so the target
85 # triple used by compiler folk won't work (directly anyway).
89 # # Always list MACHINE first,
90 # # other variables might be optional.
91 # TARGET_SPEC_VARS = MACHINE TARGET_OS
92 # .if ${TARGET_SPEC:Uno:M*,*} != ""
93 # _tspec := ${TARGET_SPEC:S/,/ /g}
94 # MACHINE := ${_tspec:[1]}
95 # TARGET_OS := ${_tspec:[2]}
97 # # We need to stop that TARGET_SPEC affecting any submakes
98 # # and deal with MACHINE=${TARGET_SPEC} in the environment.
100 # # export but do not track
101 # .export-env TARGET_SPEC
102 # .export ${TARGET_SPEC_VARS}
103 # .for v in ${TARGET_SPEC_VARS:O:u}
109 # # make sure we know what TARGET_SPEC is
110 # # as we may need it to find Makefile.depend*
111 # TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
114 .if ${.MAKE.LEVEL} == 0
115 # only the first instance is interested in all this
117 # First off, we want to know what ${MACHINE} to build for.
118 # This can be complicated if we are using a mixture of ${MACHINE} specific
119 # and non-specific Makefile.depend*
121 .if !target(_DIRDEP_USE)
122 # do some setup we only need once
123 _CURDIR ?= ${.CURDIR}
125 # make sure these are empty to start with
129 # If TARGET_SPEC_VARS is other than just MACHINE
130 # it should be set by sys.mk or similar by now.
131 # TARGET_SPEC must not contain any '.'s.
132 TARGET_SPEC_VARS ?= MACHINE
133 # this is what we started with
134 TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
135 # this is what we mostly use below
136 DEP_TARGET_SPEC = ${TARGET_SPEC_VARS:S,^,DEP_,:@v@${$v:U}@:ts,}
137 # make sure we have defaults
138 .for v in ${TARGET_SPEC_VARS}
142 .if ${TARGET_SPEC_VARS:[#]} > 1
143 # Ok, this gets more complex (putting it mildly).
144 # In order to stay sane, we need to ensure that all the build_dirs
145 # we compute below are fully qualified wrt DEP_TARGET_SPEC.
146 # The makefiles may only partially specify (eg. MACHINE only),
147 # so we need to construct a set of modifiers to fill in the gaps.
148 # jot 10 should output 1 2 3 .. 10
150 _tspec_x := ${${JOT} ${TARGET_SPEC_VARS:[#]}:L:sh}
151 # this handles unqualified entries
152 M_dep_qual_fixes = C;(/[^/.,]+)$$;\1.$${DEP_TARGET_SPEC};
153 # there needs to be at least one item missing for these to make sense
154 .for i in ${_tspec_x:[2..-1]}
155 _tspec_m$i := ${TARGET_SPEC_VARS:[2..$i]:@w@[^,]+@:ts,}
156 _tspec_a$i := ,${TARGET_SPEC_VARS:[$i..-1]:@v@$$$${DEP_$v}@:ts,}
157 M_dep_qual_fixes += C;(\.${_tspec_m$i})$$;\1${_tspec_a$i};
160 # A harmless? default.
164 .if !defined(.MAKE.DEPENDFILE_PREFERENCE)
165 # .MAKE.DEPENDFILE_PREFERENCE makes the logic below neater?
166 # you really want this set by sys.mk or similar
167 .MAKE.DEPENDFILE_PREFERENCE = ${_CURDIR}/${.MAKE.DEPENDFILE:T}
168 .if ${.MAKE.DEPENDFILE:E} == "${TARGET_SPEC}"
169 .if ${TARGET_SPEC} != ${MACHINE}
170 .MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}.$${MACHINE}
172 .MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}
176 _default_dependfile := ${.MAKE.DEPENDFILE_PREFERENCE:[1]:T}
177 _machine_dependfiles := ${.MAKE.DEPENDFILE_PREFERENCE:T:M*${MACHINE}*}
179 # for machine specific dependfiles we require ${MACHINE} to be at the end
180 # also for the sake of sanity we require a common prefix
181 .if !defined(.MAKE.DEPENDFILE_PREFIX)
182 # knowing .MAKE.DEPENDFILE_PREFIX helps
183 .if !empty(_machine_dependfiles)
184 .MAKE.DEPENDFILE_PREFIX := ${_machine_dependfiles:[1]:T:R}
186 .MAKE.DEPENDFILE_PREFIX := ${_default_dependfile:T}
191 # this is how we identify non-machine specific dependfiles
192 N_notmachine := ${.MAKE.DEPENDFILE_PREFERENCE:E:N*${MACHINE}*:${M_ListToSkip}}
194 .endif # !target(_DIRDEP_USE)
196 # if we were included recursively _DEP_TARGET_SPEC should be valid.
197 .if empty(_DEP_TARGET_SPEC)
198 # we may or may not have included a dependfile yet
199 .if defined(.INCLUDEDFROMFILE)
200 _last_dependfile := ${.INCLUDEDFROMFILE:M${.MAKE.DEPENDFILE_PREFIX}*}
202 _last_dependfile := ${.MAKE.MAKEFILES:M*/${.MAKE.DEPENDFILE_PREFIX}*:[-1]}
204 .if ${_debug_reldir:U0}
205 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: _last_dependfile='${_last_dependfile}'
208 .if empty(_last_dependfile) || ${_last_dependfile:E:${N_notmachine}} == ""
209 # this is all we have to work with
210 DEP_MACHINE = ${TARGET_MACHINE:U${MACHINE}}
211 _DEP_TARGET_SPEC := ${DEP_TARGET_SPEC}
213 _DEP_TARGET_SPEC = ${_last_dependfile:${M_dep_qual_fixes:ts:}:E}
215 .if !empty(_last_dependfile)
216 # record that we've read dependfile for this
217 _DIRDEP_CHECKED += ${_CURDIR}.${TARGET_SPEC}
221 # by now _DEP_TARGET_SPEC should be set, parse it.
222 .if ${TARGET_SPEC_VARS:[#]} > 1
223 # we need to parse DEP_MACHINE may or may not contain more info
224 _tspec := ${_DEP_TARGET_SPEC:S/,/ /g}
225 .for i in ${_tspec_x}
226 DEP_${TARGET_SPEC_VARS:[$i]} := ${_tspec:[$i]}
228 .for v in ${TARGET_SPEC_VARS:O:u}
234 DEP_MACHINE := ${_DEP_TARGET_SPEC}
237 # pickup customizations
238 # as below you can use !target(_DIRDEP_USE) to protect things
239 # which should only be done once.
240 .-include "local.dirdeps.mk"
242 # the first time we are included the _DIRDEP_USE target will not be defined
243 # we can use this as a clue to do initialization and other one time things.
244 .if !target(_DIRDEP_USE)
245 # make sure this target exists
246 dirdeps: beforedirdeps .WAIT
249 # We normally expect to be included by Makefile.depend.*
250 # which sets the DEP_* macros below.
251 DEP_RELDIR ?= ${RELDIR}
253 # this can cause lots of output!
254 # set to a set of glob expressions that might match RELDIR
257 # remember the initial value of DEP_RELDIR - we test for it below.
258 _DEP_RELDIR := ${DEP_RELDIR}
260 # things we skip for host tools
263 NSkipHostDir = ${SKIP_HOSTDIR:N*.host*:S,$,.host*,:N.host*:S,^,${SRCTOP}/,:${M_ListToSkip}}
265 # things we always skip
266 # SKIP_DIRDEPS allows for adding entries on command line.
267 SKIP_DIR += .host *.WAIT ${SKIP_DIRDEPS}
268 SKIP_DIR.host += ${SKIP_HOSTDIR}
270 DEP_SKIP_DIR = ${SKIP_DIR} \
271 ${SKIP_DIR.${DEP_TARGET_SPEC}:U} \
272 ${SKIP_DIR.${DEP_MACHINE}:U} \
273 ${SKIP_DIRDEPS.${DEP_MACHINE}:U}
275 NSkipDir = ${DEP_SKIP_DIR:${M_ListToSkip}}
277 .if defined(NO_DIRDEPS) || defined(NODIRDEPS) || defined(WITHOUT_DIRDEPS)
278 # confine ourselves to the original dir
279 DIRDEPS_FILTER += M${_DEP_RELDIR}*
282 # this is what we run below
283 DIRDEP_MAKE?= ${.MAKE}
285 # we suppress SUBDIR when visiting the leaves
286 # we assume sys.mk will set MACHINE_ARCH
287 # you can add extras to DIRDEP_USE_ENV
288 # if there is no makefile in the target directory, we skip it.
289 _DIRDEP_USE: .USE .MAKE
290 @for m in ${.MAKE.MAKEFILE_PREFERENCE}; do \
291 test -s ${.TARGET:R}/$$m || continue; \
292 echo "${TRACER}Checking ${.TARGET:R} for ${.TARGET:E} ..."; \
293 MACHINE_ARCH= NO_SUBDIR=1 ${DIRDEP_USE_ENV} \
294 TARGET_SPEC=${.TARGET:E} \
295 MACHINE=${.TARGET:E} \
296 ${DIRDEP_MAKE} -C ${.TARGET:R} || exit 1; \
301 # this is how you limit it to only the machines we have been built for
303 .if empty(ONLY_MACHINE_LIST)
304 .if !empty(ALL_MACHINE_LIST)
305 # ALL_MACHINE_LIST is the list of all legal machines - ignore anything else
306 _machine_list != cd ${_CURDIR} && 'ls' -1 ${ALL_MACHINE_LIST:O:u:@m@${.MAKE.DEPENDFILE:T:R}.$m@} 2> /dev/null; echo
308 _machine_list != 'ls' -1 ${_CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.* 2> /dev/null; echo
310 _only_machines := ${_machine_list:${NIgnoreFiles:UN*.bak}:E:O:u}
312 _only_machines := ${ONLY_MACHINE_LIST}
315 .if empty(_only_machines)
316 # we must be boot-strapping
317 _only_machines := ${TARGET_MACHINE:U${ALL_MACHINE_LIST:U${DEP_MACHINE}}}
320 .else # ! ALL_MACHINES
321 # if ONLY_MACHINE_LIST is set, we are limited to that
322 # if TARGET_MACHINE is set - it is really the same as ONLY_MACHINE_LIST
323 # otherwise DEP_MACHINE is it - so DEP_MACHINE will match.
324 _only_machines := ${ONLY_MACHINE_LIST:U${TARGET_MACHINE:U${DEP_MACHINE}}:M${DEP_MACHINE}}
327 .if !empty(NOT_MACHINE_LIST)
328 _only_machines := ${_only_machines:${NOT_MACHINE_LIST:${M_ListToSkip}}}
331 # make sure we have a starting place?
335 .if ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.${DEP_MACHINE}:L:M$x}@} != ""
340 .if ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.depend:L:M$x}@} != ""
346 # the rest is done repeatedly for every Makefile.depend we read.
347 # if we are anything but the original dir we care only about the
348 # machine type we were included for..
350 .if ${DEP_RELDIR} == "."
351 _this_dir := ${SRCTOP}
353 _this_dir := ${SRCTOP}/${DEP_RELDIR}
356 # on rare occasions, there can be a need for extra help
357 _dep_hack := ${_this_dir}/${.MAKE.DEPENDFILE_PREFIX}.inc
358 .-include "${_dep_hack}"
360 .if ${DEP_RELDIR} != ${_DEP_RELDIR} || ${DEP_TARGET_SPEC} != ${TARGET_SPEC}
362 _machines := ${DEP_MACHINE}
364 # this is the machine list we actually use below
365 _machines := ${_only_machines}
367 .if defined(HOSTPROG) || ${DEP_MACHINE} == "host"
368 # we need to build this guy's dependencies for host as well.
372 _machines := ${_machines:O:u}
375 .if ${TARGET_SPEC_VARS:[#]} > 1
376 # we need to tweak _machines
377 _dm := ${DEP_MACHINE}
378 # apply the same filtering that we do when qualifying DIRDEPS.
379 # M_dep_qual_fixes expects .${MACHINE}* so add (and remove) '.'
380 _machines := ${_machines:@DEP_MACHINE@${DEP_TARGET_SPEC}@:S,^,.,:${M_dep_qual_fixes:ts:}:O:u:S,^.,,}
381 DEP_MACHINE := ${_dm}
384 # reset each time through
387 .if ${DEP_RELDIR} == ${_DEP_RELDIR}
388 # pickup other machines for this dir if necessary
389 .if ${BUILD_AT_LEVEL0:Uyes} == "no"
390 _build_dirs += ${_machines:@m@${_CURDIR}.$m@}
392 _build_dirs += ${_machines:N${DEP_TARGET_SPEC}:@m@${_CURDIR}.$m@}
393 .if ${DEP_TARGET_SPEC} == ${TARGET_SPEC}
394 # pickup local dependencies now
401 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: DIRDEPS='${DIRDEPS}'
402 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: _machines='${_machines}'
406 # these we reset each time through as they can depend on DEP_MACHINE
407 DEP_DIRDEPS_FILTER = \
408 ${DIRDEPS_FILTER.${DEP_TARGET_SPEC}:U} \
409 ${DIRDEPS_FILTER.${DEP_MACHINE}:U} \
411 .if empty(DEP_DIRDEPS_FILTER)
413 DEP_DIRDEPS_FILTER = U
416 # this is what we start with
417 __depdirs := ${DIRDEPS:${NSkipDir}:${DEP_DIRDEPS_FILTER:ts:}:C,//+,/,g:O:u:@d@${SRCTOP}/$d@}
419 # some entries may be qualified with .<machine>
420 # the :M*/*/*.* just tries to limit the dirs we check to likely ones.
421 # the ${d:E:M*/*} ensures we don't consider junos/usr.sbin/mgd
422 __qual_depdirs := ${__depdirs:M*/*/*.*:@d@${exists($d):?:${"${d:E:M*/*}":?:${exists(${d:R}):?$d:}}}@}
423 __unqual_depdirs := ${__depdirs:${__qual_depdirs:Uno:${M_ListToSkip}}}
425 .if ${DEP_RELDIR} == ${_DEP_RELDIR}
426 # if it was called out - we likely need it.
427 __hostdpadd := ${DPADD:U.:M${HOST_OBJTOP}/*:S,${HOST_OBJTOP}/,,:H:${NSkipDir}:${DIRDEPS_FILTER:ts:}:S,$,.host,:N.*:@d@${SRCTOP}/$d@}
428 __qual_depdirs += ${__hostdpadd}
432 .info depdirs=${__depdirs}
433 .info qualified=${__qual_depdirs}
434 .info unqualified=${__unqual_depdirs}
437 # _build_dirs is what we will feed to _DIRDEP_USE
439 ${__qual_depdirs:M*.host:${NSkipHostDir}:N.host} \
440 ${__qual_depdirs:N*.host} \
441 ${_machines:Mhost*:@m@${__unqual_depdirs:@d@$d.$m@}@:${NSkipHostDir}:N.host} \
442 ${_machines:Nhost*:@m@${__unqual_depdirs:@d@$d.$m@}@}
444 # qualify everything now
445 _build_dirs := ${_build_dirs:${M_dep_qual_fixes:ts:}:O:u}
447 .endif # empty DIRDEPS
449 # Normally if doing make -V something,
450 # we do not want to waste time chasing DIRDEPS
451 # but if we want to count the number of Makefile.depend* read, we do.
452 .if ${.MAKEFLAGS:M-V${_V_READ_DIRDEPS}} == ""
453 .if !empty(_build_dirs)
454 # this makes it all happen
455 dirdeps: ${_build_dirs}
456 ${_build_dirs}: _DIRDEP_USE
459 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: needs: ${_build_dirs}
462 # this builds the dependency graph
463 .for m in ${_machines}
464 # it would be nice to do :N${.TARGET}
465 .if !empty(__qual_depdirs)
466 .for q in ${__qual_depdirs:${M_dep_qual_fixes:ts:}:E:O:u:N$m}
467 .if ${_debug_reldir} || ${DEBUG_DIRDEPS:@x@${${DEP_RELDIR}.$m:L:M$x}${${DEP_RELDIR}.$q:L:M$x}@} != ""
468 .info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$q}
470 ${_this_dir}.$m: ${_build_dirs:M*.$q}
474 .info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$m:N${_this_dir}.$m}
476 ${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
481 # Now find more dependencies - and recurse.
482 .for d in ${_build_dirs}
483 .if ${_DIRDEP_CHECKED:M$d} == ""
485 _DIRDEP_CHECKED += $d
489 # Note: _build_dirs is fully qualifed so d:R is always the directory
491 # Warning: there is an assumption here that MACHINE is always
492 # the first entry in TARGET_SPEC_VARS.
493 # If TARGET_SPEC and MACHINE are insufficient, you have a problem.
494 _m := ${.MAKE.DEPENDFILE_PREFERENCE:T:S;${TARGET_SPEC}$;${d:E};:S;${MACHINE};${d:E:C/,.*//};:@m@${exists(${d:R}/$m):?${d:R}/$m:}@:[1]}
496 # M_dep_qual_fixes isn't geared to Makefile.depend
497 _qm := ${_m:C;(\.depend)$;\1.${d:E};:${M_dep_qual_fixes:ts:}}
499 .info Looking for ${_qm}
501 # we pass _DEP_TARGET_SPEC to tell the next step what we want
502 _DEP_TARGET_SPEC := ${d:E}
503 # some makefiles may still look at this
504 _DEP_MACHINE := ${d:E:C/,.*//}
505 .if ${_debug_reldir} && ${_qm} != ${_m}
506 .info loading ${_m} for ${d:E}
516 .elif ${.MAKE.LEVEL} > 42
517 .error You should have stopped recursing by now.
519 _DEP_RELDIR := ${DEP_RELDIR}
520 # pickup local dependencies
524 # bootstrapping new dependencies made easy?
525 .if make(bootstrap*) && !target(bootstrap)
527 .if exists(${.CURDIR}/${.MAKE.DEPENDFILE:T})
531 # find a Makefile.depend to use as _src
532 _src != cd ${.CURDIR} && for m in ${.MAKE.DEPENDFILE_PREFERENCE:T:S,${MACHINE},*,}; do test -s $$m || continue; echo $$m; break; done; echo
534 .error cannot find any of ${.MAKE.DEPENDFILE_PREFERENCE:T}
537 _src?= ${.MAKE.DEPENDFILE:T}
539 bootstrap-this: .NOTMAIN
540 @echo Bootstrapping ${RELDIR}/${.MAKE.DEPENDFILE:T} from ${_src:T}
541 (cd ${.CURDIR} && sed 's,${_src:E},${MACHINE},g' ${_src} > ${.MAKE.DEPENDFILE:T})
543 bootstrap: bootstrap-recurse
544 bootstrap-recurse: bootstrap-this
547 bootstrap-recurse: .NOTMAIN .MAKE
549 for d in `cd ${RELDIR} && ${.MAKE} -B -f ${"${.MAKEFLAGS:M-n}":?${_src}:${.MAKE.DEPENDFILE:T}} -V DIRDEPS`; do \
550 test -d $$d || d=$${d%.*}; \
551 test -d $$d || continue; \
552 echo "Checking $$d for bootstrap ..."; \
553 (cd $$d && ${.MAKE} -f ${_mf} bootstrap-recurse); \