2 # $Id: dirdeps.mk,v 1.55 2015/10/20 22:04:53 sjg Exp $
4 # Copyright (c) 2010-2013, Juniper Networks, Inc.
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions
10 # 1. Redistributions of source code must retain the above copyright
11 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in the
14 # documentation and/or other materials provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 # Much of the complexity here is for supporting cross-building.
29 # If a tree does not support that, simply using plain Makefile.depend
30 # should provide sufficient clue.
31 # Otherwise the recommendation is to use Makefile.depend.${MACHINE}
34 # Note: this file gets multiply included.
35 # This is what we do with DIRDEPS
38 # This is a list of directories - relative to SRCTOP, it is
39 # normally only of interest to .MAKE.LEVEL 0.
40 # In some cases the entry may be qualified with a .<machine>
41 # or .<target_spec> suffix (see TARGET_SPEC_VARS below),
42 # for example to force building something for the pseudo
43 # machines "host" or "common" regardless of current ${MACHINE}.
45 # All unqualified entries end up being qualified with .${TARGET_SPEC}
46 # and partially qualified (if TARGET_SPEC_VARS has multiple
47 # entries) are also expanded to a full .<target_spec>.
48 # The _DIRDEP_USE target uses the suffix to set TARGET_SPEC
49 # correctly when visiting each entry.
51 # The fully qualified directory entries are used to construct a
52 # dependency graph that will drive the build later.
54 # Also, for each fully qualified directory target, we will search
55 # using ${.MAKE.DEPENDFILE_PREFERENCE} to find additional
56 # dependencies. We use Makefile.depend (default value for
57 # .MAKE.DEPENDFILE_PREFIX) to refer to these makefiles to
58 # distinguish them from others.
60 # Each Makefile.depend file sets DEP_RELDIR to be the
61 # the RELDIR (path relative to SRCTOP) for its directory, and
62 # since each Makefile.depend file includes dirdeps.mk, this
63 # processing is recursive and results in .MAKE.LEVEL 0 learning the
64 # dependencies of the tree wrt the initial directory (_DEP_RELDIR).
67 # Indicates whether .MAKE.LEVEL 0 builds anything:
68 # if "no" sub-makes are used to build everything,
69 # if "yes" sub-makes are only used to build for other machines.
70 # It is best to use "no", but this can require fixing some
71 # makefiles to not do anything at .MAKE.LEVEL 0.
74 # The default value is just MACHINE, and for most environments
75 # this is sufficient. The _DIRDEP_USE target actually sets
76 # both MACHINE and TARGET_SPEC to the suffix of the current
77 # target so that in the general case TARGET_SPEC can be ignored.
79 # If more than MACHINE is needed then sys.mk needs to decompose
80 # TARGET_SPEC and set the relevant variables accordingly.
81 # It is important that MACHINE be included in and actually be
82 # the first member of TARGET_SPEC_VARS. This allows other
83 # variables to be considered optional, and some of the treatment
84 # below relies on MACHINE being the first entry.
85 # Note: TARGET_SPEC cannot contain any '.'s so the target
86 # triple used by compiler folk won't work (directly anyway).
90 # # Always list MACHINE first,
91 # # other variables might be optional.
92 # TARGET_SPEC_VARS = MACHINE TARGET_OS
93 # .if ${TARGET_SPEC:Uno:M*,*} != ""
94 # _tspec := ${TARGET_SPEC:S/,/ /g}
95 # MACHINE := ${_tspec:[1]}
96 # TARGET_OS := ${_tspec:[2]}
98 # # We need to stop that TARGET_SPEC affecting any submakes
99 # # and deal with MACHINE=${TARGET_SPEC} in the environment.
101 # # export but do not track
102 # .export-env TARGET_SPEC
103 # .export ${TARGET_SPEC_VARS}
104 # .for v in ${TARGET_SPEC_VARS:O:u}
110 # # make sure we know what TARGET_SPEC is
111 # # as we may need it to find Makefile.depend*
112 # TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
115 # touch this at your peril
116 _DIRDEP_USE_LEVEL?= 0
117 .if ${.MAKE.LEVEL} == ${_DIRDEP_USE_LEVEL}
118 # only the first instance is interested in all this
120 # First off, we want to know what ${MACHINE} to build for.
121 # This can be complicated if we are using a mixture of ${MACHINE} specific
122 # and non-specific Makefile.depend*
124 .if !target(_DIRDEP_USE)
125 # do some setup we only need once
126 _CURDIR ?= ${.CURDIR}
127 _OBJDIR ?= ${.OBJDIR}
129 now_utc = ${%s:L:gmtime}
130 .if !defined(start_utc)
131 start_utc := ${now_utc}
134 # make sure these are empty to start with
138 # If TARGET_SPEC_VARS is other than just MACHINE
139 # it should be set by sys.mk or similar by now.
140 # TARGET_SPEC must not contain any '.'s.
141 TARGET_SPEC_VARS ?= MACHINE
142 # this is what we started with
143 TARGET_SPEC = ${TARGET_SPEC_VARS:@v@${$v:U}@:ts,}
144 # this is what we mostly use below
145 DEP_TARGET_SPEC = ${TARGET_SPEC_VARS:S,^,DEP_,:@v@${$v:U}@:ts,}
146 # make sure we have defaults
147 .for v in ${TARGET_SPEC_VARS}
151 .if ${TARGET_SPEC_VARS:[#]} > 1
152 # Ok, this gets more complex (putting it mildly).
153 # In order to stay sane, we need to ensure that all the build_dirs
154 # we compute below are fully qualified wrt DEP_TARGET_SPEC.
155 # The makefiles may only partially specify (eg. MACHINE only),
156 # so we need to construct a set of modifiers to fill in the gaps.
157 # jot 10 should output 1 2 3 .. 10
159 _tspec_x := ${${JOT} ${TARGET_SPEC_VARS:[#]}:L:sh}
160 # this handles unqualified entries
161 M_dep_qual_fixes = C;(/[^/.,]+)$$;\1.$${DEP_TARGET_SPEC};
162 # there needs to be at least one item missing for these to make sense
163 .for i in ${_tspec_x:[2..-1]}
164 _tspec_m$i := ${TARGET_SPEC_VARS:[2..$i]:@w@[^,]+@:ts,}
165 _tspec_a$i := ,${TARGET_SPEC_VARS:[$i..-1]:@v@$$$${DEP_$v}@:ts,}
166 M_dep_qual_fixes += C;(\.${_tspec_m$i})$$;\1${_tspec_a$i};
169 # A harmless? default.
173 .if !defined(.MAKE.DEPENDFILE_PREFERENCE)
174 # .MAKE.DEPENDFILE_PREFERENCE makes the logic below neater?
175 # you really want this set by sys.mk or similar
176 .MAKE.DEPENDFILE_PREFERENCE = ${_CURDIR}/${.MAKE.DEPENDFILE:T}
177 .if ${.MAKE.DEPENDFILE:E} == "${TARGET_SPEC}"
178 .if ${TARGET_SPEC} != ${MACHINE}
179 .MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}.$${MACHINE}
181 .MAKE.DEPENDFILE_PREFERENCE += ${_CURDIR}/${.MAKE.DEPENDFILE:T:R}
185 _default_dependfile := ${.MAKE.DEPENDFILE_PREFERENCE:[1]:T}
186 _machine_dependfiles := ${.MAKE.DEPENDFILE_PREFERENCE:T:M*${MACHINE}*}
188 # for machine specific dependfiles we require ${MACHINE} to be at the end
189 # also for the sake of sanity we require a common prefix
190 .if !defined(.MAKE.DEPENDFILE_PREFIX)
191 # knowing .MAKE.DEPENDFILE_PREFIX helps
192 .if !empty(_machine_dependfiles)
193 .MAKE.DEPENDFILE_PREFIX := ${_machine_dependfiles:[1]:T:R}
195 .MAKE.DEPENDFILE_PREFIX := ${_default_dependfile:T}
200 # this is how we identify non-machine specific dependfiles
201 N_notmachine := ${.MAKE.DEPENDFILE_PREFERENCE:E:N*${MACHINE}*:${M_ListToSkip}}
203 .endif # !target(_DIRDEP_USE)
205 # if we were included recursively _DEP_TARGET_SPEC should be valid.
206 .if empty(_DEP_TARGET_SPEC)
207 # we may or may not have included a dependfile yet
208 .if defined(.INCLUDEDFROMFILE)
209 _last_dependfile := ${.INCLUDEDFROMFILE:M${.MAKE.DEPENDFILE_PREFIX}*}
211 _last_dependfile := ${.MAKE.MAKEFILES:M*/${.MAKE.DEPENDFILE_PREFIX}*:[-1]}
213 .if ${_debug_reldir:U0}
214 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: _last_dependfile='${_last_dependfile}'
217 .if empty(_last_dependfile) || ${_last_dependfile:E:${N_notmachine}} == ""
218 # this is all we have to work with
219 DEP_MACHINE = ${TARGET_MACHINE:U${MACHINE}}
220 _DEP_TARGET_SPEC := ${DEP_TARGET_SPEC}
222 _DEP_TARGET_SPEC = ${_last_dependfile:${M_dep_qual_fixes:ts:}:E}
224 .if !empty(_last_dependfile)
225 # record that we've read dependfile for this
226 _DIRDEP_CHECKED += ${_CURDIR}.${TARGET_SPEC}
230 # by now _DEP_TARGET_SPEC should be set, parse it.
231 .if ${TARGET_SPEC_VARS:[#]} > 1
232 # we need to parse DEP_MACHINE may or may not contain more info
233 _tspec := ${_DEP_TARGET_SPEC:S/,/ /g}
234 .for i in ${_tspec_x}
235 DEP_${TARGET_SPEC_VARS:[$i]} := ${_tspec:[$i]}
237 .for v in ${TARGET_SPEC_VARS:O:u}
243 DEP_MACHINE := ${_DEP_TARGET_SPEC}
246 .if ${MAKEFILE:T} == ${.PARSEFILE} && empty(DIRDEPS) && ${.TARGETS:Uall:M*/*} != ""
247 # This little trick let's us do
249 # mk -f dirdeps.mk some/dir.${TARGET_SPEC}
252 ${.TARGETS:Nall}: all
253 DIRDEPS := ${.TARGETS:M*/*}
254 # so that -DNO_DIRDEPS works
255 DEP_RELDIR := ${DIRDEPS:R:[1]}
256 # disable DIRDEPS_CACHE as it does not like this trick
257 MK_DIRDEPS_CACHE = no
261 # pickup customizations
262 # as below you can use !target(_DIRDEP_USE) to protect things
263 # which should only be done once.
264 .-include "local.dirdeps.mk"
266 # the first time we are included the _DIRDEP_USE target will not be defined
267 # we can use this as a clue to do initialization and other one time things.
268 .if !target(_DIRDEP_USE)
269 # make sure this target exists
270 dirdeps: beforedirdeps .WAIT
273 # We normally expect to be included by Makefile.depend.*
274 # which sets the DEP_* macros below.
275 DEP_RELDIR ?= ${RELDIR}
277 # this can cause lots of output!
278 # set to a set of glob expressions that might match RELDIR
281 # remember the initial value of DEP_RELDIR - we test for it below.
282 _DEP_RELDIR := ${DEP_RELDIR}
284 # things we skip for host tools
287 NSkipHostDir = ${SKIP_HOSTDIR:N*.host*:S,$,.host*,:N.host*:S,^,${SRCTOP}/,:${M_ListToSkip}}
289 # things we always skip
290 # SKIP_DIRDEPS allows for adding entries on command line.
291 SKIP_DIR += .host *.WAIT ${SKIP_DIRDEPS}
292 SKIP_DIR.host += ${SKIP_HOSTDIR}
294 DEP_SKIP_DIR = ${SKIP_DIR} \
295 ${SKIP_DIR.${DEP_TARGET_SPEC}:U} \
296 ${SKIP_DIR.${DEP_MACHINE}:U} \
297 ${SKIP_DIRDEPS.${DEP_MACHINE}:U}
299 NSkipDir = ${DEP_SKIP_DIR:${M_ListToSkip}}
301 .if defined(NO_DIRDEPS) || defined(NODIRDEPS) || defined(WITHOUT_DIRDEPS)
302 # confine ourselves to the original dir
303 DIRDEPS_FILTER += M${_DEP_RELDIR}*
306 # this is what we run below
307 DIRDEP_MAKE?= ${.MAKE}
309 # we suppress SUBDIR when visiting the leaves
310 # we assume sys.mk will set MACHINE_ARCH
311 # you can add extras to DIRDEP_USE_ENV
312 # if there is no makefile in the target directory, we skip it.
313 _DIRDEP_USE: .USE .MAKE
314 @for m in ${.MAKE.MAKEFILE_PREFERENCE}; do \
315 test -s ${.TARGET:R}/$$m || continue; \
316 echo "${TRACER}Checking ${.TARGET:R} for ${.TARGET:E} ..."; \
317 MACHINE_ARCH= NO_SUBDIR=1 ${DIRDEP_USE_ENV} \
318 TARGET_SPEC=${.TARGET:E} \
319 MACHINE=${.TARGET:E} \
320 ${DIRDEP_MAKE} -C ${.TARGET:R} || exit 1; \
325 # this is how you limit it to only the machines we have been built for
327 .if empty(ONLY_MACHINE_LIST)
328 .if !empty(ALL_MACHINE_LIST)
329 # ALL_MACHINE_LIST is the list of all legal machines - ignore anything else
330 _machine_list != cd ${_CURDIR} && 'ls' -1 ${ALL_MACHINE_LIST:O:u:@m@${.MAKE.DEPENDFILE:T:R}.$m@} 2> /dev/null; echo
332 _machine_list != 'ls' -1 ${_CURDIR}/${.MAKE.DEPENDFILE_PREFIX}.* 2> /dev/null; echo
334 _only_machines := ${_machine_list:${NIgnoreFiles:UN*.bak}:E:O:u}
336 _only_machines := ${ONLY_MACHINE_LIST}
339 .if empty(_only_machines)
340 # we must be boot-strapping
341 _only_machines := ${TARGET_MACHINE:U${ALL_MACHINE_LIST:U${DEP_MACHINE}}}
344 .else # ! ALL_MACHINES
345 # if ONLY_MACHINE_LIST is set, we are limited to that
346 # if TARGET_MACHINE is set - it is really the same as ONLY_MACHINE_LIST
347 # otherwise DEP_MACHINE is it - so DEP_MACHINE will match.
348 _only_machines := ${ONLY_MACHINE_LIST:U${TARGET_MACHINE:U${DEP_MACHINE}}:M${DEP_MACHINE}}
351 .if !empty(NOT_MACHINE_LIST)
352 _only_machines := ${_only_machines:${NOT_MACHINE_LIST:${M_ListToSkip}}}
355 # make sure we have a starting place?
359 # if repeatedly building the same target,
360 # we can avoid the overhead of re-computing the tree dependencies.
361 MK_DIRDEPS_CACHE ?= no
362 BUILD_DIRDEPS_CACHE ?= no
365 .if !defined(NO_DIRDEPS)
366 .if ${MK_DIRDEPS_CACHE} == "yes"
367 # this is where we will cache all our work
368 DIRDEPS_CACHE?= ${_OBJDIR}/dirdeps.cache${.TARGETS:Nall:O:u:ts-:S,/,_,g:S,^,.,:N.}
370 # just ensure this exists
373 M_oneperline = @x@\\${.newline} $$x@
375 .if ${BUILD_DIRDEPS_CACHE} == "no"
376 .if !target(dirdeps-cached)
377 # we do this via sub-make
380 dirdeps: dirdeps-cached
381 dirdeps-cached: ${DIRDEPS_CACHE} .MAKE
382 @echo "${TRACER}Using ${DIRDEPS_CACHE}"
383 @MAKELEVEL=${.MAKE.LEVEL} ${.MAKE} -C ${_CURDIR} -f ${DIRDEPS_CACHE} \
384 dirdeps MK_DIRDEPS_CACHE=no BUILD_DIRDEPS=no
386 # these should generally do
387 BUILD_DIRDEPS_MAKEFILE ?= ${MAKEFILE}
388 BUILD_DIRDEPS_TARGETS ?= ${.TARGETS}
390 # we need the .meta file to ensure we update if
391 # any of the Makefile.depend* changed.
392 # We do not want to compare the command line though.
393 ${DIRDEPS_CACHE}: .META .NOMETA_CMP
394 +@{ echo '# Autogenerated - do NOT edit!'; echo; \
395 echo 'BUILD_DIRDEPS=no'; echo; \
396 echo '.include <dirdeps.mk>'; \
398 +@MAKELEVEL=${.MAKE.LEVEL} DIRDEPS_CACHE=${DIRDEPS_CACHE} \
399 DIRDEPS="${DIRDEPS}" \
400 MAKEFLAGS= ${.MAKE} -C ${_CURDIR} -f ${BUILD_DIRDEPS_MAKEFILE} \
401 ${BUILD_DIRDEPS_TARGETS} BUILD_DIRDEPS_CACHE=yes \
402 .MAKE.DEPENDFILE=.none \
403 3>&1 1>&2 | sed 's,${SRCTOP},$${SRCTOP},g' >> ${.TARGET}.new && \
404 mv ${.TARGET}.new ${.TARGET}
407 .elif !target(_count_dirdeps)
408 # we want to capture the dirdeps count in the cache
410 _count_dirdeps: .NOMETA
411 @echo '.info $${.newline}$${TRACER}Makefiles read: total=${.MAKE.MAKEFILES:[#]} depend=${.MAKE.MAKEFILES:M*depend*:[#]} dirdeps=${.ALLTARGETS:M${SRCTOP}*:O:u:[#]}' >&3
414 .elif !make(dirdeps) && !target(_count_dirdeps)
415 beforedirdeps: _count_dirdeps
416 _count_dirdeps: .NOMETA
417 @echo "${TRACER}Makefiles read: total=${.MAKE.MAKEFILES:[#]} depend=${.MAKE.MAKEFILES:M*depend*:[#]} dirdeps=${.ALLTARGETS:M${SRCTOP}*:O:u:[#]} seconds=`expr ${now_utc} - ${start_utc}`"
422 .if ${BUILD_DIRDEPS} == "yes"
423 .if ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.${DEP_MACHINE}:L:M$x}@} != ""
428 .if ${DEBUG_DIRDEPS:@x@${DEP_RELDIR:M$x}${${DEP_RELDIR}.depend:L:M$x}@} != ""
434 # the rest is done repeatedly for every Makefile.depend we read.
435 # if we are anything but the original dir we care only about the
436 # machine type we were included for..
438 .if ${DEP_RELDIR} == "."
439 _this_dir := ${SRCTOP}
441 _this_dir := ${SRCTOP}/${DEP_RELDIR}
444 # on rare occasions, there can be a need for extra help
445 _dep_hack := ${_this_dir}/${.MAKE.DEPENDFILE_PREFIX}.inc
446 .-include "${_dep_hack}"
448 .if ${DEP_RELDIR} != ${_DEP_RELDIR} || ${DEP_TARGET_SPEC} != ${TARGET_SPEC}
450 _machines := ${DEP_MACHINE}
452 # this is the machine list we actually use below
453 _machines := ${_only_machines}
455 .if defined(HOSTPROG) || ${DEP_MACHINE} == "host"
456 # we need to build this guy's dependencies for host as well.
460 _machines := ${_machines:O:u}
463 .if ${TARGET_SPEC_VARS:[#]} > 1
464 # we need to tweak _machines
465 _dm := ${DEP_MACHINE}
466 # apply the same filtering that we do when qualifying DIRDEPS.
467 # M_dep_qual_fixes expects .${MACHINE}* so add (and remove) '.'
468 _machines := ${_machines:@DEP_MACHINE@${DEP_TARGET_SPEC}@:S,^,.,:${M_dep_qual_fixes:ts:}:O:u:S,^.,,}
469 DEP_MACHINE := ${_dm}
472 # reset each time through
475 .if ${DEP_RELDIR} == ${_DEP_RELDIR}
476 # pickup other machines for this dir if necessary
477 .if ${BUILD_AT_LEVEL0:Uyes} == "no"
478 _build_dirs += ${_machines:@m@${_CURDIR}.$m@}
480 _build_dirs += ${_machines:N${DEP_TARGET_SPEC}:@m@${_CURDIR}.$m@}
481 .if ${DEP_TARGET_SPEC} == ${TARGET_SPEC}
482 # pickup local dependencies now
489 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: DIRDEPS='${DIRDEPS}'
490 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: _machines='${_machines}'
494 # these we reset each time through as they can depend on DEP_MACHINE
495 DEP_DIRDEPS_FILTER = \
496 ${DIRDEPS_FILTER.${DEP_TARGET_SPEC}:U} \
497 ${DIRDEPS_FILTER.${DEP_MACHINE}:U} \
499 .if empty(DEP_DIRDEPS_FILTER)
501 DEP_DIRDEPS_FILTER = U
504 # this is what we start with
505 __depdirs := ${DIRDEPS:${NSkipDir}:${DEP_DIRDEPS_FILTER:ts:}:C,//+,/,g:O:u:@d@${SRCTOP}/$d@}
507 # some entries may be qualified with .<machine>
508 # the :M*/*/*.* just tries to limit the dirs we check to likely ones.
509 # the ${d:E:M*/*} ensures we don't consider junos/usr.sbin/mgd
510 __qual_depdirs := ${__depdirs:M*/*/*.*:@d@${exists($d):?:${"${d:E:M*/*}":?:${exists(${d:R}):?$d:}}}@}
511 __unqual_depdirs := ${__depdirs:${__qual_depdirs:Uno:${M_ListToSkip}}}
513 .if ${DEP_RELDIR} == ${_DEP_RELDIR}
514 # if it was called out - we likely need it.
515 __hostdpadd := ${DPADD:U.:M${HOST_OBJTOP}/*:S,${HOST_OBJTOP}/,,:H:${NSkipDir}:${DIRDEPS_FILTER:ts:}:S,$,.host,:N.*:@d@${SRCTOP}/$d@}
516 __qual_depdirs += ${__hostdpadd}
520 .info depdirs=${__depdirs}
521 .info qualified=${__qual_depdirs}
522 .info unqualified=${__unqual_depdirs}
525 # _build_dirs is what we will feed to _DIRDEP_USE
527 ${__qual_depdirs:M*.host:${NSkipHostDir}:N.host} \
528 ${__qual_depdirs:N*.host} \
529 ${_machines:Mhost*:@m@${__unqual_depdirs:@d@$d.$m@}@:${NSkipHostDir}:N.host} \
530 ${_machines:Nhost*:@m@${__unqual_depdirs:@d@$d.$m@}@}
532 # qualify everything now
533 _build_dirs := ${_build_dirs:${M_dep_qual_fixes:ts:}:O:u}
535 .endif # empty DIRDEPS
537 # Normally if doing make -V something,
538 # we do not want to waste time chasing DIRDEPS
539 # but if we want to count the number of Makefile.depend* read, we do.
540 .if ${.MAKEFLAGS:M-V${_V_READ_DIRDEPS}} == ""
541 .if !empty(_build_dirs)
542 .if ${BUILD_DIRDEPS_CACHE} == "yes"
543 x!= { echo; echo '\# ${DEP_RELDIR}.${DEP_TARGET_SPEC}'; \
544 echo 'dirdeps: ${_build_dirs:${M_oneperline}}'; echo; } >&3; echo
545 x!= { ${_build_dirs:@x@${target($x):?:echo '$x: _DIRDEP_USE';}@} echo; } >&3; echo
547 # this makes it all happen
548 dirdeps: ${_build_dirs}
550 ${_build_dirs}: _DIRDEP_USE
553 .info ${DEP_RELDIR}.${DEP_TARGET_SPEC}: needs: ${_build_dirs}
556 # this builds the dependency graph
557 .for m in ${_machines}
558 # it would be nice to do :N${.TARGET}
559 .if !empty(__qual_depdirs)
560 .for q in ${__qual_depdirs:${M_dep_qual_fixes:ts:}:E:O:u:N$m}
561 .if ${_debug_reldir} || ${DEBUG_DIRDEPS:@x@${${DEP_RELDIR}.$m:L:M$x}${${DEP_RELDIR}.$q:L:M$x}@} != ""
562 .info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$q}
564 .if ${BUILD_DIRDEPS_CACHE} == "yes"
565 x!= { echo; echo '${_this_dir}.$m: ${_build_dirs:M*.$q:${M_oneperline}}'; echo; } >&3; echo
567 ${_this_dir}.$m: ${_build_dirs:M*.$q}
572 .info ${DEP_RELDIR}.$m: graph: ${_build_dirs:M*.$m:N${_this_dir}.$m}
574 .if ${BUILD_DIRDEPS_CACHE} == "yes"
575 x!= { echo; echo '${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m:${M_oneperline}}'; echo; } >&3; echo
577 ${_this_dir}.$m: ${_build_dirs:M*.$m:N${_this_dir}.$m}
583 # Now find more dependencies - and recurse.
584 .for d in ${_build_dirs}
585 .if ${_DIRDEP_CHECKED:M$d} == ""
587 _DIRDEP_CHECKED += $d
591 # Note: _build_dirs is fully qualifed so d:R is always the directory
593 # Warning: there is an assumption here that MACHINE is always
594 # the first entry in TARGET_SPEC_VARS.
595 # If TARGET_SPEC and MACHINE are insufficient, you have a problem.
596 _m := ${.MAKE.DEPENDFILE_PREFERENCE:T:S;${TARGET_SPEC}$;${d:E};:S;${MACHINE};${d:E:C/,.*//};:@m@${exists(${d:R}/$m):?${d:R}/$m:}@:[1]}
598 # M_dep_qual_fixes isn't geared to Makefile.depend
599 _qm := ${_m:C;(\.depend)$;\1.${d:E};:${M_dep_qual_fixes:ts:}}
601 .info Looking for ${_qm}
603 # we pass _DEP_TARGET_SPEC to tell the next step what we want
604 _DEP_TARGET_SPEC := ${d:E}
605 # some makefiles may still look at this
606 _DEP_MACHINE := ${d:E:C/,.*//}
607 # set this "just in case"
608 # we can skip :tA since we computed the path above
609 DEP_RELDIR := ${_m:H:S,${SRCTOP}/,,}
612 .if ${_debug_reldir} && ${_qm} != ${_m}
613 .info loading ${_m} for ${d:E}
622 .endif # BUILD_DIRDEPS
624 .elif ${.MAKE.LEVEL} > 42
625 .error You should have stopped recursing by now.
627 # we are building something
628 DEP_RELDIR := ${RELDIR}
629 _DEP_RELDIR := ${RELDIR}
630 # pickup local dependencies
634 # bootstrapping new dependencies made easy?
635 .if (make(bootstrap) || make(bootstrap-recurse)) && !target(bootstrap)
637 .if exists(${.CURDIR}/${.MAKE.DEPENDFILE:T})
641 # find a Makefile.depend to use as _src
642 _src != cd ${.CURDIR} && for m in ${.MAKE.DEPENDFILE_PREFERENCE:T:S,${MACHINE},*,}; do test -s $$m || continue; echo $$m; break; done; echo
644 .error cannot find any of ${.MAKE.DEPENDFILE_PREFERENCE:T}
647 _src?= ${.MAKE.DEPENDFILE:T}
649 bootstrap-this: .NOTMAIN
650 @echo Bootstrapping ${RELDIR}/${.MAKE.DEPENDFILE:T} from ${_src:T}
651 (cd ${.CURDIR} && sed 's,${_src:E},${MACHINE},g' ${_src} > ${.MAKE.DEPENDFILE:T})
653 bootstrap: bootstrap-recurse
654 bootstrap-recurse: bootstrap-this
657 bootstrap-recurse: .NOTMAIN .MAKE
659 for d in `cd ${RELDIR} && ${.MAKE} -B -f ${"${.MAKEFLAGS:M-n}":?${_src}:${.MAKE.DEPENDFILE:T}} -V DIRDEPS`; do \
660 test -d $$d || d=$${d%.*}; \
661 test -d $$d || continue; \
662 echo "Checking $$d for bootstrap ..."; \
663 (cd $$d && ${.MAKE} -f ${_mf} bootstrap-recurse); \